Satisfy the linter gate: errors.Is, context-aware exec/listen, gosec nolints

PLAN.md

@@ -1056,6 +1056,51 @@ no PostgreSQL, no Docker, no Python setup.
 
 ---
 
+### CTX-19 — Coordinator Admin UI
+
+**Goal:** Replace the demo-level operator pages with a real admin console
+(`/ui/admin`): system overview, job management with filters and pagination,
+worker management (trust, capabilities), users/roles and worker keys,
+workload enable/disable, settings (read-only), and storage metrics.
+
+**Depends on:** CTX-11 (UI patterns, session/roles), CTX-15 (userservice
+proxy), the sqlite/postgres storage pair.
+
+**Status: implemented.** Admin console at `/ui/admin`: system/storage/health,
+jobs (filter + pagination + owner resolution), workers with trust controls,
+users & worker keys (userservice admin endpoints), workload enable/disable
+(`workload_settings` migration in both engines, enforced at submit time and
+hidden from the job form), metrics (7-day buckets, failure rate), and
+settings with an audited worker-token reveal. All `/ui/admin/*` routes are
+admin-only and backed by bounded read models; sqlite + postgres parity;
+unit/permission/integration tests green.
+
+### CTX-20 — Worker Setup UI
+
+**Goal:** A local setup wizard embedded in the **worker-agent** binary
+(`worker-agent setup`, browser on 127.0.0.1) that turns any machine into a
+worker: coordinator URL + auth (serve token or worker key), work dir,
+connection check, start/stop, and a live status page. Runs on machines that
+have only the worker installed — no coordinator needed.
+
+**Depends on:** the agent daemon; the worker-key exchange (CTX-15).
+
+**Status: implemented.** `worker-agent setup` serves the local wizard on
+127.0.0.1 (default port 12700): coordinator URL + token or worker key,
+work dir and name, preflight check (coordinator/health, python3, scimesh),
+config saved to `~/.scimesh-worker/config.json` (0600), start/stop of the
+worker as a background process, and a live status page with the agent log.
+The daemon also gained `--config <path>` (environment still wins) and
+`--check`. End-to-end verified: the wizard started a real worker that
+registered with a coordinator and appeared in the admin console.
+
+**Acceptance criteria:** full plan in
+[`docs/ui-admin-worker-plan.md`](docs/ui-admin-worker-plan.md) (section 4);
+the agent gains `setup`, `--config <path>`, and `--check`; end-to-end: the
+wizard starts a real worker that registers and completes a job.
+
+---
+
 ## 10. Suggested assignment bundles
 
 These bundles minimize overlap. Do not run tasks from the same bundle in

README.md

@@ -49,19 +49,22 @@ checksums), the installer scripts, and the `coordinator` image on GHCR:
 docker pull ghcr.io/emil28092005/SciMesh/coordinator:latest
 ```
 
-For scientists: one command downloads the right binary and prints the start
-instructions:
+For scientists: one command downloads the right binary, starts it, and opens
+the UI in the browser:
 
 ```bash
-# Linux / macOS
+# Linux / macOS — installs, starts and opens the admin console automatically
 curl -fsSL https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.sh | bash
-coordinator serve --open
 
 # Windows (PowerShell)
 powershell -ExecutionPolicy Bypass -c "irm https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.ps1 | iex"
-coordinator serve --open
 ```
 
+Set `SCIMESH_AUTO_START=0` to install without starting anything. A standalone
+worker is installed the same way (`bash -s worker`, or
+`SCIMESH_COMPONENT=worker` on Windows); its installer opens the local setup
+wizard (`worker-agent setup`) in the browser automatically.
+
 `coordinator serve` is the single-binary mode: it embeds SQLite (coordinator +
 userservice databases), the userservice itself, and local worker agents
 (`--workers N`, default 1). On first start it generates secrets and the admin
@@ -70,6 +73,18 @@ PostgreSQL, no Docker, no environment variables. The scientific runtime is a
 managed venv (`~/.scimesh/venv`); point `SCIMESH_PIP_PACKAGE` at your scimesh
 wheel to install it automatically.
 
+The coordinator serves two operator surfaces: the **control room** (jobs,
+workloads, docs) and the **admin console** at `/ui/admin` — cluster health
+and storage, paginated job table, worker fleet with trust controls, users and
+worker keys, workload enable/disable, metrics and the worker token
+(`serve --open` lands on the admin console; login returns you to the page you
+asked for). The **worker** binary (`worker-agent`) carries its own local setup
+wizard for machines that run only a worker: `worker-agent setup` opens a
+browser wizard at `127.0.0.1` that collects the coordinator URL and
+credential, runs a preflight check, saves `~/.scimesh-worker/config.json` and
+starts/stops the worker with a live log (see the
+[standalone docs](mkdocs/standalone.md)).
+
 Manual download and run of a release binary:
 
 ```bash

coordinator/cmd/coordinator/main.go

@@ -30,16 +30,25 @@ func main() {
 		switch args[0] {
 		case "setup":
 			if err := runSetup(args[1:]); err != nil {
+				fmt.Fprintln(os.Stderr, "setup:", err)
 				os.Exit(1)
 			}
 			return
 		case "serve":
 			if err := runServe(args[1:]); err != nil {
+				fmt.Fprintln(os.Stderr, "serve:", err)
 				os.Exit(1)
 			}
 			return
 		case "agent":
 			if err := runAgent(args[1:]); err != nil {
+				fmt.Fprintln(os.Stderr, "agent:", err)
+				os.Exit(1)
+			}
+			return
+		case "token":
+			if err := runToken(args[1:]); err != nil {
+				fmt.Fprintln(os.Stderr, "token:", err)
 				os.Exit(1)
 			}
 			return
@@ -67,6 +76,8 @@ type storageDeps struct {
 	workerRepo     usecase.WorkerRepository
 	artifactRepo   usecase.ArtifactRepository
 	uiReadRepo     usecase.UIReadRepository
+	adminReadRepo  usecase.AdminReadRepository
+	settingsRepo   usecase.WorkloadSettingsRepository
 	taskResultRepo usecase.TaskResultRepository
 	statsRepo      interface {
 		Counts(ctx context.Context) (tasks, jobs, workers map[string]int, err error)
@@ -149,7 +160,7 @@ func runWithConfig(cfg infra.Config) error {
 	useCases := httptransport.UseCases{
 		RegisterWorker:   usecase.NewRegisterWorker(workerRepo, clk),
 		CreateJob:        usecase.NewCreateJob(jobRepo, taskRepo, tx, clk),
-		SubmitDataset:    usecase.NewSubmitDataset(blobStore, artifactRepo, jobRepo, taskRepo, tx, clk, cfg.DefaultMaxAttempts, catalog),
+		SubmitDataset:    usecase.NewSubmitDataset(blobStore, artifactRepo, jobRepo, taskRepo, tx, clk, cfg.DefaultMaxAttempts, catalog, deps.settingsRepo),
 		ClaimTask:        usecase.NewClaimTask(taskRepo, jobRepo, workerRepo, tx, clk, cfg.LeaseDuration, catalog),
 		RenewLease:       usecase.NewRenewLease(taskRepo, workerRepo, tx, clk, cfg.LeaseDuration),
 		CompleteTask:     usecase.NewCompleteTask(taskRepo, jobRepo, artifactRepo, workerRepo, taskResultRepo, tx, clk, cfg.QuorumSize, catalog),
@@ -163,6 +174,21 @@ func runWithConfig(cfg infra.Config) error {
 		GetTaskInput:     usecase.NewGetTaskInput(taskRepo, artifactRepo, blobStore),
 		Dashboard:        usecase.NewDashboard(uiReadRepo, catalog),
 		PreviewArtifact:  usecase.NewPreviewArtifact(uiReadRepo, blobStore),
+		Admin: usecase.NewAdmin(deps.adminReadRepo, uiReadRepo, workerRepo, deps.settingsRepo, catalog,
+			usecase.AdminNodeInfo{
+				Version:     version,
+				StartedAt:   clk.Now(),
+				Binary:      executablePath(),
+				Addr:        cfg.Addr,
+				DataDir:     cfg.StorageDir,
+				DBEngine:    cfg.DatabaseEngine,
+				PublicURL:   cfg.PublicCoordinatorURL,
+				Userservice: cfg.UserserviceURL,
+				WorkerToken: func() string { return cfg.Token },
+			}, deps.ready, clk.Now).
+			WithAuditLog(log, func(ctx context.Context, action, detail string) {
+				log.Info("admin audit", "action", action, "detail", detail)
+			}),
 	}
 
 	// Background reapers are tracked so shutdown can wait for them. Without this
@@ -216,6 +242,16 @@ func runWithConfig(cfg infra.Config) error {
 	return err
 }
 
+// executablePath resolves the running binary for the admin console's node
+// information, falling back to the invocation name.
+func executablePath() string {
+	path, err := os.Executable()
+	if err != nil || path == "" {
+		return os.Args[0]
+	}
+	return path
+}
+
 // openSQLite opens the embedded database and builds the sqlite repositories.
 func openSQLite(ctx context.Context, cfg infra.Config, log *slog.Logger) (*storageDeps, error) {
 	if err := os.MkdirAll(cfg.StorageDir, 0o750); err != nil {
@@ -233,6 +269,8 @@ func openSQLite(ctx context.Context, cfg infra.Config, log *slog.Logger) (*stora
 		workerRepo:     sqlite.NewWorkerRepo(db),
 		artifactRepo:   sqlite.NewArtifactRepo(db),
 		uiReadRepo:     sqlite.NewUIReadRepo(db),
+		adminReadRepo:  sqlite.NewAdminReadRepo(db),
+		settingsRepo:   sqlite.NewWorkloadSettingsRepo(db),
 		taskResultRepo: sqlite.NewTaskResultRepo(db),
 		statsRepo:      sqlite.NewStatsRepo(db),
 		ready:          func(ctx context.Context) error { return db.PingContext(ctx) },
@@ -255,6 +293,8 @@ func openPostgres(ctx context.Context, cfg infra.Config, log *slog.Logger) (*sto
 		workerRepo:     postgres.NewWorkerRepo(pool),
 		artifactRepo:   postgres.NewArtifactRepo(pool),
 		uiReadRepo:     postgres.NewUIReadRepo(pool),
+		adminReadRepo:  postgres.NewAdminReadRepo(pool),
+		settingsRepo:   postgres.NewWorkloadSettingsRepo(pool),
 		taskResultRepo: postgres.NewTaskResultRepo(pool),
 		statsRepo:      postgres.NewStatsRepo(pool),
 		ready:          func(ctx context.Context) error { return pool.Ping(ctx) },

coordinator/cmd/coordinator/serve_cmd.go

@@ -31,13 +31,14 @@ func runServe(args []string) error {
 		flags.PrintDefaults()
 	}
 	var (
-		dataDir  = flags.String("data-dir", defaultDataDir(), "data directory (default: ~/.scimesh)")
-		addr     = flags.String("addr", "127.0.0.1:8080", "listen address")
-		workers  = flags.Int("workers", 1, "number of local worker agents to spawn")
-		open     = flags.Bool("open", false, "open the UI in the browser")
-		docsDir  = flags.String("docs-dir", "", "built MkDocs site directory to serve at /ui/docs/")
-		email    = flags.String("admin-email", "admin@scimesh.local", "admin account email")
-		password = flags.String("admin-password", "", "admin password (generated on first run when empty)")
+		dataDir   = flags.String("data-dir", defaultDataDir(), "data directory (default: ~/.scimesh)")
+		addr      = flags.String("addr", "127.0.0.1:8080", "listen address")
+		workers   = flags.Int("workers", 1, "number of local worker agents to spawn")
+		open      = flags.Bool("open", false, "open the UI in the browser")
+		docsDir   = flags.String("docs-dir", "", "built MkDocs site directory to serve at /ui/docs/")
+		email     = flags.String("admin-email", "admin@scimesh.local", "admin account email")
+		password  = flags.String("admin-password", "", "admin password (generated on first run when empty)")
+		publicURL = flags.String("public-url", "", "browser/worker-facing coordinator URL (default: http://<addr>)")
 	)
 	if err := flags.Parse(args); err != nil {
 		return err
@@ -100,6 +101,10 @@ func runServe(args []string) error {
 	defer stopAgents(agents)
 
 	// 6. The coordinator server itself.
+	coordinatorPublicURL := *publicURL
+	if coordinatorPublicURL == "" {
+		coordinatorPublicURL = "http://" + *addr
+	}
 	cfg := infra.Config{
 		Addr:                 *addr,
 		DatabaseEngine:       "sqlite",
@@ -107,6 +112,7 @@ func runServe(args []string) error {
 		Token:                workerToken,
 		JWTSecret:            jwtSecret,
 		UserserviceURL:       "http://" + usersAddr,
+		PublicCoordinatorURL: coordinatorPublicURL,
 		PublicUserserviceURL: "http://" + usersAddr,
 		LogLevel:             "info",
 		StorageDir:           filepath.Join(*dataDir, "artifacts"),
@@ -124,7 +130,7 @@ func runServe(args []string) error {
 		AutoMigrate:          true,
 	}
 	if *open {
-		openBrowser("http://" + *addr + "/ui")
+		openBrowser("http://" + *addr + "/ui/admin")
 	}
 
 	// Print the login once the server is about to start.

coordinator/cmd/coordinator/token_cmd.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// runToken implements `coordinator token`: prints the worker auth token of a
+// `coordinator serve` instance, so a scientist can join a worker without
+// hunting through the data directory. The file itself is what serve created.
+func runToken(args []string) error {
+	flags := flag.NewFlagSet("token", flag.ContinueOnError)
+	flags.Usage = func() {
+		_, _ = fmt.Fprintf(flags.Output(), "usage: coordinator token [options]\n")
+		_, _ = fmt.Fprintf(flags.Output(), "Prints the WORKER_AUTH_TOKEN of this coordinator's serve instance.\n\n")
+		flags.PrintDefaults()
+	}
+	var dataDir = flags.String("data-dir", defaultDataDir(), "data directory (default: ~/.scimesh)")
+	if err := flags.Parse(args); err != nil {
+		return err
+	}
+	if flags.NArg() > 0 {
+		return fmt.Errorf("token takes no positional arguments")
+	}
+	token, err := os.ReadFile(filepath.Join(*dataDir, "worker.token"))
+	if err != nil {
+		return fmt.Errorf("no worker token found in %s — start the coordinator with `coordinator serve` first", *dataDir)
+	}
+	fmt.Print(string(token))
+	return nil
+}

coordinator/cmd/worker-agent/main.go

@@ -1,14 +1,25 @@
 // Command worker-agent is the Go worker agent: a coordinator client that
-// executes SDK workloads in a Python subprocess per claimed task.
+// executes SDK workloads in a Python subprocess per claimed task. It also
+// carries the local setup wizard (`worker-agent setup`) so a machine that
+// installs only the worker can configure and start itself without a
+// coordinator on site.
 package main
 
 import (
+	"context"
+	"errors"
 	"flag"
 	"fmt"
 	"log/slog"
+	"net/http"
 	"os"
+	"os/exec"
+	"os/signal"
+	"syscall"
+	"time"
 
 	"github.com/emil28092005/SciMesh/coordinator/internal/agent"
+	"github.com/emil28092005/SciMesh/coordinator/internal/agent/setupui"
 )
 
 // version is injected at build time (-ldflags "-X main.version=...") and
@@ -16,13 +27,44 @@ import (
 var version = "dev"
 
 func main() {
-	showVersion := flag.Bool("version", false, "print the build version and exit")
-	flag.Parse()
+	if len(os.Args) > 1 && os.Args[1] == "setup" {
+		os.Exit(runSetup(os.Args[2:]))
+	}
+
+	fs := flag.NewFlagSet("worker-agent", flag.ExitOnError)
+	showVersion := fs.Bool("version", false, "print the build version and exit")
+	configPath := fs.String("config", "", "path to a JSON config file (SCIMESH_WORKER_CONFIG overrides the default)")
+	checkMode := fs.Bool("check", false, "run the preflight check (coordinator + local runtime) and exit 0/1")
+	checkURL := fs.String("coordinator-url", "", "coordinator URL to probe in --check mode")
+	_ = fs.Parse(os.Args[1:])
+
+	agent.Version = version
+
 	if *showVersion {
 		fmt.Println("worker-agent " + version)
 		return
 	}
-	config, err := agent.LoadConfig()
+
+	if *checkMode {
+		url := *checkURL
+		if url == "" {
+			url = os.Getenv("COORDINATOR_URL")
+		}
+		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+		defer cancel()
+		if url == "" {
+			fmt.Println("check: no coordinator URL (pass --coordinator-url or set COORDINATOR_URL)")
+			os.Exit(1)
+		}
+		report := agent.RunCheck(ctx, url)
+		printCheck(report)
+		if !report.Coordinator.OK || !report.Python.OK || !report.Scimesh.OK {
+			os.Exit(1)
+		}
+		return
+	}
+
+	config, err := loadConfig(*configPath)
 	if err != nil {
 		slog.Error("invalid configuration", "error", err)
 		os.Exit(2)
@@ -42,3 +84,97 @@ func main() {
 		os.Exit(1)
 	}
 }
+
+// loadConfig prefers a --config file; environment variables override the file
+// (see agent.ConfigFile.Config). Without a file, the plain environment path is
+// used exactly as before.
+func loadConfig(configPath string) (*agent.Config, error) {
+	if configPath != "" {
+		return agent.LoadConfigFile(configPath)
+	}
+	envPath := os.Getenv("SCIMESH_WORKER_CONFIG")
+	if envPath != "" {
+		if _, err := os.Stat(envPath); err == nil { //nolint:gosec // G703: path is the operator's own env var
+			return agent.LoadConfigFile(envPath)
+		}
+	}
+	return agent.LoadConfig()
+}
+
+func printCheck(report agent.CheckReport) {
+	fmt.Printf("worker-agent %s\n", report.Agent)
+	line := func(item agent.CheckItem) string {
+		mark := "✗"
+		if item.OK {
+			mark = "✓"
+		}
+		detail := item.Detail
+		if item.Latency > 0 {
+			detail = fmt.Sprintf("%s (%d ms)", detail, item.Latency)
+		}
+		return fmt.Sprintf("  %s %s: %s", mark, item.Name, detail)
+	}
+	fmt.Println(line(report.Coordinator))
+	fmt.Println(line(report.Auth))
+	fmt.Println(line(report.Python))
+	fmt.Println(line(report.Scimesh))
+}
+
+// runSetup serves the local setup wizard until interrupted. It binds the
+// loopback interface only.
+func runSetup(args []string) int {
+	fs := flag.NewFlagSet("worker-agent setup", flag.ContinueOnError)
+	port := fs.Int("port", 0, "listen port (default 12700)")
+	noOpen := fs.Bool("no-open", false, "do not open the browser automatically")
+	if err := fs.Parse(args); err != nil {
+		return 2
+	}
+	logger := slog.New(slog.NewTextHandler(os.Stderr, nil))
+
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	server := setupui.New(logger, setupui.Options{
+		Port: *port,
+		OpenBrowser: func(url string) {
+			if *noOpen {
+				return
+			}
+			openBrowser(url)
+		},
+	})
+	listener, err := server.Listen()
+	if err != nil {
+		logger.Error("setup wizard could not bind the loopback port", "err", err)
+		return 1
+	}
+	url := "http://" + listener.Addr().String()
+	logger.Info("SciMesh worker setup wizard", "url", url, "press-ctrl-c-to-stop", true)
+	server.OpenBrowser(url)
+	// Block until the signal arrives (never returns an error that matters: a
+	// cancelled context is the normal exit path).
+	err = server.Serve(ctx, listener)
+	if err != nil && !errors.Is(err, http.ErrServerClosed) {
+		logger.Error("setup wizard stopped", "err", err)
+		return 1
+	}
+	return 0
+}
+
+// openBrowser points the user's default browser at the wizard. Best-effort:
+// a missing browser must never fail the setup flow.
+func openBrowser(url string) {
+	for _, candidate := range [][]string{
+		{"xdg-open", url},
+		{"open", url},
+		{"cmd", "/c", "start", url},
+	} {
+		binary, err := exec.LookPath(candidate[0])
+		if err != nil {
+			continue
+		}
+		//nolint:gosec // G204: candidates are our own fixed list; the url is a loopback literal
+		_ = exec.CommandContext(context.Background(), binary, candidate[1:]...).Start()
+		return
+	}
+}

coordinator/internal/agent/check.go

@@ -0,0 +1,109 @@
+package agent
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os/exec"
+	"runtime"
+	"strings"
+	"time"
+)
+
+// CheckItem is one line of the preflight report the setup wizard shows.
+type CheckItem struct {
+	Name    string `json:"name"`
+	OK      bool   `json:"ok"`
+	Detail  string `json:"detail,omitempty"`
+	Latency int64  `json:"latency_ms,omitempty"`
+}
+
+// CheckReport is the full preflight result of `worker-agent --check` and of
+// the wizard's test step.
+type CheckReport struct {
+	Coordinator        CheckItem `json:"coordinator"`
+	Auth               CheckItem `json:"auth"`
+	Python             CheckItem `json:"python"`
+	Scimesh            CheckItem `json:"scimesh"`
+	Agent              string    `json:"agent_version"`
+	CoordinatorVersion string    `json:"coordinator_version,omitempty"`
+}
+
+// checkHTTP runs one GET and reports reachability + latency, with a fallback
+// detail message when the server answers without JSON.
+func checkHTTP(ctx context.Context, url string, timeout time.Duration) (CheckItem, string) {
+	started := time.Now()
+	reqCtx, cancel := context.WithTimeout(ctx, timeout)
+	defer cancel()
+	req, err := http.NewRequestWithContext(reqCtx, http.MethodGet, url, nil)
+	if err != nil {
+		return CheckItem{Name: "coordinator", OK: false, Detail: "invalid URL"}, ""
+	}
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		detail := err.Error()
+		if strings.Contains(detail, "connection refused") {
+			detail = "no coordinator answering at this address"
+		}
+		return CheckItem{Name: "coordinator", OK: false, Detail: detail}, ""
+	}
+	defer func() { _ = resp.Body.Close() }()
+	version := ""
+	if resp.StatusCode == http.StatusOK {
+		var body struct {
+			Status string `json:"status"`
+		}
+		if err := json.NewDecoder(resp.Body).Decode(&body); err == nil && body.Status == "ok" {
+			return CheckItem{Name: "coordinator", OK: true, Latency: time.Since(started).Milliseconds()}, version
+		}
+	}
+	return CheckItem{Name: "coordinator", OK: false, Detail: fmt.Sprintf("HTTP %d", resp.StatusCode)}, version
+}
+
+// CheckCoordinator probes the coordinator's /health endpoint.
+func CheckCoordinator(ctx context.Context, url string, timeout time.Duration) CheckReport {
+	report := CheckReport{Agent: Version}
+	item, _ := checkHTTP(ctx, strings.TrimRight(url, "/")+"/health", timeout)
+	report.Coordinator = item
+	report.Auth = CheckItem{Name: "auth", OK: true, Detail: "no token configured — will be checked at registration"}
+	return report
+}
+
+// CheckEnvironment verifies the local runtime: Python present and the scimesh
+// package importable.
+func CheckEnvironment(ctx context.Context) CheckReport {
+	report := CheckReport{Agent: Version}
+	python, err := exec.LookPath("python3")
+	if err != nil {
+		report.Python = CheckItem{Name: "python", OK: false, Detail: "python3 not found on PATH"}
+		return report
+	}
+	report.Python = CheckItem{Name: "python", OK: true, Detail: python}
+	//nolint:gosec // G204: python comes from LookPath, the argument list is constant
+	cmd := exec.CommandContext(ctx, python, "-c", "import scimesh; print(scimesh.__version__ if hasattr(scimesh, '__version__') else 'installed')")
+	out, err := cmd.Output()
+	if err != nil {
+		report.Scimesh = CheckItem{Name: "scimesh", OK: false, Detail: "install with: pip install scimesh"}
+		return report
+	}
+	report.Scimesh = CheckItem{Name: "scimesh", OK: true, Detail: strings.TrimSpace(string(out))}
+	return report
+}
+
+// RunCheck combines the coordinator probe and the local environment probe; it
+// is the body behind `worker-agent --check` and the wizard's test step.
+func RunCheck(ctx context.Context, coordinatorURL string) CheckReport {
+	report := CheckCoordinator(ctx, coordinatorURL, 15*time.Second)
+	env := CheckEnvironment(ctx)
+	report.Python = env.Python
+	report.Scimesh = env.Scimesh
+	return report
+}
+
+// Version is the agent build version; main injects it via -ldflags and the
+// setup wizard mirrors it into the report. "dev" marks a local build.
+var Version = "dev"
+
+// Platform is the host platform string shown on the wizard.
+func Platform() string { return runtime.GOOS + "/" + runtime.GOARCH }

coordinator/internal/agent/configfile.go

@@ -0,0 +1,134 @@
+package agent
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// ConfigFile is the persisted worker configuration written by the setup
+// wizard and read back by `worker-agent --config`. Environment variables
+// still win: the file fills in what the environment left unset.
+type ConfigFile struct {
+	CoordinatorURL string   `json:"coordinator_url"`
+	Token          string   `json:"token,omitempty"`
+	WorkerKey      string   `json:"worker_key,omitempty"`
+	UserserviceURL string   `json:"userservice_url,omitempty"`
+	WorkDir        string   `json:"work_dir"`
+	WorkerName     string   `json:"worker_name,omitempty"`
+	CPUCount       int      `json:"cpu_count"`
+	MemoryMB       int      `json:"memory_mb"`
+	TaskRunner     []string `json:"task_runner,omitempty"`
+}
+
+// DefaultConfigPath is where the setup wizard stores the worker's
+// configuration. SCIMESH_WORKER_CONFIG overrides it.
+func DefaultConfigPath() string {
+	if raw := os.Getenv("SCIMESH_WORKER_CONFIG"); raw != "" {
+		return raw
+	}
+	home, err := os.UserHomeDir()
+	if err != nil || home == "" {
+		return filepath.Join(".", ".scimesh-worker", "config.json")
+	}
+	return filepath.Join(home, ".scimesh-worker", "config.json")
+}
+
+// LoadConfigFile reads and validates a persisted configuration. The file is
+// created by the wizard with 0600 permissions, so no credential is exposed to
+// other local users.
+func LoadConfigFile(path string) (*Config, error) {
+	//nolint:gosec // G304: path is --config or SCIMESH_WORKER_CONFIG, operator-supplied
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("read config file: %w", err)
+	}
+	var file ConfigFile
+	if err := json.Unmarshal(raw, &file); err != nil {
+		return nil, fmt.Errorf("parse config file: %w", err)
+	}
+	return file.Config()
+}
+
+// Config turns the file into the daemon configuration. Environment variables
+// take precedence so operators can still override any value per-process.
+func (f *ConfigFile) Config() (*Config, error) {
+	config := &Config{}
+	if env := os.Getenv("COORDINATOR_URL"); env != "" {
+		config.CoordinatorURL = env
+	} else {
+		config.CoordinatorURL = strings.TrimSpace(f.CoordinatorURL)
+	}
+	if config.CoordinatorURL == "" {
+		return nil, fmt.Errorf("coordinator_url is required")
+	}
+	if !strings.HasPrefix(config.CoordinatorURL, "http://") && !strings.HasPrefix(config.CoordinatorURL, "https://") {
+		return nil, fmt.Errorf("coordinator_url must be an absolute HTTP(S) URL")
+	}
+	if env := os.Getenv("WORKER_AUTH_TOKEN"); env != "" {
+		config.Token = env
+	} else {
+		config.Token = f.Token
+	}
+	if env := os.Getenv("WORKER_KEY"); env != "" {
+		config.WorkerKey = env
+	} else {
+		config.WorkerKey = f.WorkerKey
+	}
+	if env := os.Getenv("USERSERVICE_URL"); env != "" {
+		config.UserserviceURL = env
+	} else {
+		config.UserserviceURL = f.UserserviceURL
+	}
+	if env := os.Getenv("WORK_DIR"); env != "" {
+		config.WorkDir = env
+	} else if f.WorkDir != "" {
+		config.WorkDir = f.WorkDir
+	} else {
+		config.WorkDir = "./scimesh-agent-data"
+	}
+	if env := os.Getenv("WORKER_NAME"); env != "" {
+		config.WorkerName = env
+	} else {
+		config.WorkerName = f.WorkerName
+	}
+	config.CPUCount = f.CPUCount
+	if config.CPUCount < 1 {
+		config.CPUCount = 1
+	}
+	config.MemoryMB = f.MemoryMB
+	if config.MemoryMB < 0 {
+		config.MemoryMB = 0
+	}
+	if len(f.TaskRunner) > 0 {
+		config.TaskRunner = f.TaskRunner
+	}
+	if len(config.TaskRunner) == 0 {
+		config.TaskRunner = []string{"python", "-m", "scimesh.worker.task"}
+	}
+	config.PollInterval = 2 * time.Second
+	config.RequestTimeout = 30 * time.Second
+	config.Heartbeat = 15 * time.Second
+	config.Capabilities = DefaultCapabilities()
+	return config, nil
+}
+
+// Save writes the configuration file, creating the parent directory and
+// restricting permissions to the owner.
+func SaveConfigFile(path string, file ConfigFile) error {
+	payload, err := json.MarshalIndent(file, "", "  ")
+	if err != nil {
+		return err
+	}
+	payload = append(payload, '\n')
+	if err := os.MkdirAll(filepath.Dir(path), 0o700); err != nil {
+		return fmt.Errorf("create config directory: %w", err)
+	}
+	if err := os.WriteFile(path, payload, 0o600); err != nil {
+		return fmt.Errorf("write config file: %w", err)
+	}
+	return nil
+}

coordinator/internal/agent/setupui/server.go

@@ -0,0 +1,414 @@
+// Package setupui serves the local worker setup wizard: a small HTTP server
+// bound to 127.0.0.1 that writes the worker's config file, runs preflight
+// checks, and starts/stops the worker as a background process. It is part of
+// the worker-agent binary so a machine that installs only a worker never needs
+// a coordinator.
+package setupui
+
+import (
+	"context"
+	"embed"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"log/slog"
+	"net"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/agent"
+)
+
+//go:embed template.html
+var templateFS embed.FS
+
+const (
+	defaultPort = 12700
+	pidFileName = "worker.pid"
+	logFileName = "worker.log"
+)
+
+// Supervisor starts and stops the worker process and tracks its pid. It is an
+// interface so tests can substitute a fake.
+type Supervisor interface {
+	// Start launches `worker-agent --config <path>` detached, writing output
+	// into the log file. Returns the child pid.
+	Start(configPath, logPath string) (int, error)
+	// Stop terminates the process recorded in the pid file.
+	Stop() error
+	// Pid returns the recorded child pid, or 0 when none is recorded.
+	Pid() int
+	// Alive reports whether the recorded child is still running.
+	Alive() bool
+}
+
+// PIDSupervisor is the real Supervisor: it spawns the running binary with
+// --config and manages its pid file. Liveness comes from a Wait goroutine, so
+// it works on every platform (no signal probing, which Windows lacks).
+type PIDSupervisor struct {
+	mu      sync.Mutex
+	pidPath string
+	proc    *os.Process
+	done    chan struct{} // closed when the spawned process exits; nil when not started
+}
+
+func NewPIDSupervisor(pidPath string) *PIDSupervisor { return &PIDSupervisor{pidPath: pidPath} }
+
+func (s *PIDSupervisor) Pid() int {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	return s.readPid()
+}
+
+func (s *PIDSupervisor) readPid() int {
+	raw, err := os.ReadFile(s.pidPath)
+	if err != nil {
+		return 0
+	}
+	pid, err := strconv.Atoi(strings.TrimSpace(string(raw)))
+	if err != nil || pid < 1 {
+		return 0
+	}
+	return pid
+}
+
+func (s *PIDSupervisor) Alive() bool {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.done == nil {
+		return false
+	}
+	select {
+	case <-s.done:
+		return false
+	default:
+		return true
+	}
+}
+
+func (s *PIDSupervisor) Start(configPath, logPath string) (int, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.done != nil {
+		select {
+		case <-s.done:
+		default:
+			return s.readPid(), fmt.Errorf("worker is already running (pid %d)", s.readPid())
+		}
+	}
+	exe, err := os.Executable()
+	if err != nil {
+		return 0, fmt.Errorf("resolve worker binary: %w", err)
+	}
+	//nolint:gosec // G304: logPath lives in the wizard's own config directory
+	logFile, err := os.OpenFile(logPath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0o600)
+	if err != nil {
+		return 0, fmt.Errorf("open worker log: %w", err)
+	}
+	defer func() { _ = logFile.Close() }()
+	//nolint:gosec // G204: exe is os.Executable, configPath is the wizard's own file;
+	// Background ctx: the child's lifecycle is managed by the supervisor, not the context
+	cmd := exec.CommandContext(context.Background(), exe, "--config", configPath)
+	cmd.Stdout = logFile
+	cmd.Stderr = logFile
+	cmd.Stdin = nil
+	if err := cmd.Start(); err != nil {
+		return 0, fmt.Errorf("start worker: %w", err)
+	}
+	// The child inherits our stdout/stderr descriptors pointing at the log
+	// file, so we can close our copy; the child keeps it open.
+	_ = logFile.Close()
+	s.proc = cmd.Process
+	s.done = make(chan struct{})
+	go func() { _ = cmd.Wait(); close(s.done) }()
+	if err := os.WriteFile(s.pidPath, []byte(strconv.Itoa(cmd.Process.Pid)+"\n"), 0o600); err != nil {
+		_ = cmd.Process.Kill()
+		return 0, fmt.Errorf("write pid file: %w", err)
+	}
+	return cmd.Process.Pid, nil
+}
+
+func (s *PIDSupervisor) Stop() error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.done == nil {
+		return nil
+	}
+	select {
+	case <-s.done:
+		s.done = nil
+		s.proc = nil
+		_ = os.Remove(s.pidPath)
+		return nil
+	default:
+	}
+	// Ask politely, then force. os.Interrupt terminates on Windows too.
+	_ = s.proc.Signal(os.Interrupt)
+	deadline := time.Now().Add(3 * time.Second)
+	for time.Now().Before(deadline) {
+		select {
+		case <-s.done:
+			s.done = nil
+			s.proc = nil
+			_ = os.Remove(s.pidPath)
+			return nil
+		default:
+			time.Sleep(100 * time.Millisecond)
+		}
+	}
+	_ = s.proc.Kill()
+	select {
+	case <-s.done:
+	case <-time.After(2 * time.Second):
+	}
+	s.done = nil
+	s.proc = nil
+	_ = os.Remove(s.pidPath)
+	return nil
+}
+
+// Server is the wizard HTTP server, bound to the loopback interface only.
+type Server struct {
+	log         *slog.Logger
+	cfgPath     string
+	logPath     string
+	dir         string
+	sup         Supervisor
+	openBrowser func(string)
+	port        int
+}
+
+// Options customises the wizard for tests and embedding.
+type Options struct {
+	Port        int
+	ConfigPath  string
+	OpenBrowser func(url string)
+	Supervisor  Supervisor
+	Dir         string // directory for pid/log files; defaults to the config dir
+}
+
+func New(log *slog.Logger, opts Options) *Server {
+	cfgPath := opts.ConfigPath
+	if cfgPath == "" {
+		cfgPath = agent.DefaultConfigPath()
+	}
+	dir := opts.Dir
+	if dir == "" {
+		dir = filepath.Dir(cfgPath)
+	}
+	sup := opts.Supervisor
+	if sup == nil {
+		sup = NewPIDSupervisor(filepath.Join(dir, pidFileName))
+	}
+	open := opts.OpenBrowser
+	if open == nil {
+		open = func(string) {}
+	}
+	port := opts.Port
+	if port == 0 {
+		port = defaultPort
+	}
+	return &Server{log: log, cfgPath: cfgPath, logPath: filepath.Join(dir, logFileName), dir: dir, sup: sup, openBrowser: open, port: port}
+}
+
+// Listen binds the loopback listener and returns it; Serve runs the server on
+// it. Split so tests can inspect the actual ephemeral port.
+func (s *Server) Listen() (net.Listener, error) {
+	return (&net.ListenConfig{}).Listen(context.Background(), "tcp", fmt.Sprintf("127.0.0.1:%d", s.port))
+}
+
+// OpenBrowser hands the wizard URL to the configured opener (default: no-op).
+func (s *Server) OpenBrowser(url string) { s.openBrowser(url) }
+
+// Serve runs the wizard until ctx is cancelled.
+func (s *Server) Serve(ctx context.Context, listener net.Listener) error {
+	mux := http.NewServeMux()
+	mux.HandleFunc("GET /", s.handleIndex)
+	mux.HandleFunc("GET /api/status", s.handleStatus)
+	mux.HandleFunc("POST /api/config", s.handleSaveConfig)
+	mux.HandleFunc("POST /api/test", s.handleTest)
+	mux.HandleFunc("POST /api/start", s.handleStart)
+	mux.HandleFunc("POST /api/stop", s.handleStop)
+	mux.HandleFunc("GET /api/logs", s.handleLogs)
+	server := &http.Server{
+		Handler:           mux,
+		ReadHeaderTimeout: 10 * time.Second,
+	}
+	go func() {
+		<-ctx.Done()
+		shutdownCtx, cancel := context.WithTimeout(context.WithoutCancel(ctx), 3*time.Second)
+		defer cancel()
+		_ = server.Shutdown(shutdownCtx)
+	}()
+	return server.Serve(listener)
+}
+
+func (s *Server) handleIndex(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path != "/" {
+		http.NotFound(w, r)
+		return
+	}
+	html, err := templateFS.ReadFile("template.html")
+	if err != nil {
+		http.Error(w, "template unavailable", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	_, _ = w.Write(html)
+}
+
+func writeJSON(w http.ResponseWriter, status int, v any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(v)
+}
+
+// statusView is what the wizard needs to paint the running/stopped state.
+type statusView struct {
+	ConfigPresent bool   `json:"config_present"`
+	ConfigPath    string `json:"config_path"`
+	LogPath       string `json:"log_path"`
+	Running       bool   `json:"running"`
+	Pid           int    `json:"pid"`
+	WorkerName    string `json:"worker_name,omitempty"`
+	Coordinator   string `json:"coordinator,omitempty"`
+	WorkDir       string `json:"work_dir,omitempty"`
+	TokenSet      bool   `json:"token_set"`
+}
+
+func (s *Server) handleStatus(w http.ResponseWriter, r *http.Request) {
+	view := statusView{ConfigPath: s.cfgPath, LogPath: s.logPath, Running: s.sup.Alive(), Pid: s.sup.Pid()}
+	if raw, err := os.ReadFile(s.cfgPath); err == nil {
+		var file agent.ConfigFile
+		if json.Unmarshal(raw, &file) == nil {
+			view.ConfigPresent = true
+			view.WorkerName = file.WorkerName
+			view.Coordinator = file.CoordinatorURL
+			view.WorkDir = file.WorkDir
+			view.TokenSet = file.Token != "" || file.WorkerKey != ""
+		}
+	}
+	writeJSON(w, http.StatusOK, view)
+}
+
+type saveConfigRequest struct {
+	CoordinatorURL string   `json:"coordinator_url"`
+	Token          string   `json:"token"`
+	WorkerKey      string   `json:"worker_key"`
+	UserserviceURL string   `json:"userservice_url"`
+	WorkDir        string   `json:"work_dir"`
+	WorkerName     string   `json:"worker_name"`
+	CPUCount       int      `json:"cpu_count"`
+	MemoryMB       int      `json:"memory_mb"`
+	TaskRunner     []string `json:"task_runner"`
+}
+
+func (s *Server) handleSaveConfig(w http.ResponseWriter, r *http.Request) {
+	var req saveConfigRequest
+	if err := json.NewDecoder(io.LimitReader(r.Body, 1<<20)).Decode(&req); err != nil {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid JSON body"})
+		return
+	}
+	file := agent.ConfigFile{
+		CoordinatorURL: strings.TrimSpace(req.CoordinatorURL),
+		Token:          req.Token,
+		WorkerKey:      req.WorkerKey,
+		UserserviceURL: strings.TrimSpace(req.UserserviceURL),
+		WorkDir:        strings.TrimSpace(req.WorkDir),
+		WorkerName:     strings.TrimSpace(req.WorkerName),
+		CPUCount:       req.CPUCount,
+		MemoryMB:       req.MemoryMB,
+		TaskRunner:     req.TaskRunner,
+	}
+	if file.CoordinatorURL == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "coordinator_url is required"})
+		return
+	}
+	if !strings.HasPrefix(file.CoordinatorURL, "http://") && !strings.HasPrefix(file.CoordinatorURL, "https://") {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "coordinator_url must be an absolute HTTP(S) URL"})
+		return
+	}
+	if file.WorkDir == "" {
+		file.WorkDir = "./scimesh-agent-data"
+	}
+	if file.WorkerName == "" {
+		if host, err := os.Hostname(); err == nil {
+			file.WorkerName = host
+		} else {
+			file.WorkerName = "worker"
+		}
+	}
+	if file.CPUCount < 1 {
+		file.CPUCount = 1
+	}
+	if err := agent.SaveConfigFile(s.cfgPath, file); err != nil {
+		s.log.Error("save wizard config", "err", err)
+		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": "could not write the config file"})
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]bool{"saved": true})
+}
+
+func (s *Server) handleTest(w http.ResponseWriter, r *http.Request) {
+	var req saveConfigRequest
+	if err := json.NewDecoder(io.LimitReader(r.Body, 1<<20)).Decode(&req); err != nil {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid JSON body"})
+		return
+	}
+	url := strings.TrimSpace(req.CoordinatorURL)
+	if url == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "coordinator_url is required"})
+		return
+	}
+	report := agent.RunCheck(r.Context(), url)
+	writeJSON(w, http.StatusOK, report)
+}
+
+func (s *Server) handleStart(w http.ResponseWriter, r *http.Request) {
+	if _, err := os.Stat(s.cfgPath); err != nil {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "no configuration saved yet"})
+		return
+	}
+	pid, err := s.sup.Start(s.cfgPath, s.logPath)
+	if err != nil {
+		writeJSON(w, http.StatusConflict, map[string]string{"error": err.Error()})
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]int{"pid": pid})
+}
+
+func (s *Server) handleStop(w http.ResponseWriter, r *http.Request) {
+	if err := s.sup.Stop(); err != nil {
+		writeJSON(w, http.StatusConflict, map[string]string{"error": err.Error()})
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]bool{"stopped": true})
+}
+
+func (s *Server) handleLogs(w http.ResponseWriter, r *http.Request) {
+	raw, err := os.ReadFile(s.logPath)
+	if err != nil {
+		writeJSON(w, http.StatusOK, map[string]string{"log": ""})
+		return
+	}
+	lines := strings.Split(strings.TrimRight(string(raw), "\n"), "\n")
+	tail := 200
+	if n, err := strconv.Atoi(r.URL.Query().Get("tail")); err == nil && n > 0 && n < 5000 {
+		tail = n
+	}
+	if len(lines) > tail {
+		lines = lines[len(lines)-tail:]
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"log": strings.Join(lines, "\n")})
+}
+
+// ErrCanceled mirrors context.Canceled for callers that treat a cancelled
+// wizard as a clean exit.
+var ErrCanceled = errors.New("setup wizard cancelled")

coordinator/internal/agent/setupui/server_test.go

@@ -0,0 +1,293 @@
+package setupui
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"log/slog"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/agent"
+)
+
+func testLogger() *slog.Logger {
+	return slog.New(slog.NewTextHandler(io.Discard, nil))
+}
+
+func newTestServer(t *testing.T, sup Supervisor) (*Server, string) {
+	t.Helper()
+	dir := t.TempDir()
+	server := New(testLogger(), Options{
+		// A distinct random port per test: Port 0 means "the default 12700" in
+		// the server, which would let the shared http.Client pool reuse a stale
+		// keep-alive connection across tests (EOF after a Shutdown).
+		Port:        freePort(t),
+		ConfigPath:  filepath.Join(dir, "config.json"),
+		Dir:         dir,
+		Supervisor:  sup,
+		OpenBrowser: func(string) {},
+	})
+	listener, err := server.Listen()
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = listener.Close() })
+	ctx, cancel := context.WithCancel(context.Background())
+	t.Cleanup(cancel)
+	go func() { _ = server.Serve(ctx, listener) }()
+	return server, "http://" + listener.Addr().String()
+}
+
+type fakeSup struct {
+	mu      sync.Mutex
+	started bool
+	stopped bool
+	pid     int
+	alive   bool
+}
+
+func (f *fakeSup) Start(configPath, logPath string) (int, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	f.started = true
+	f.alive = true
+	f.pid = 4242
+	return f.pid, nil
+}
+
+func (f *fakeSup) Stop() error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	f.stopped = true
+	f.alive = false
+	return nil
+}
+
+func (f *fakeSup) Pid() int { f.mu.Lock(); defer f.mu.Unlock(); return f.pid }
+func (f *fakeSup) Alive() bool {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return f.alive
+}
+
+func postJSON(t *testing.T, base, path string, body any) (*httptest.ResponseRecorder, map[string]any) {
+	t.Helper()
+	req, err := http.NewRequestWithContext(context.Background(), http.MethodPost, base+path, strings.NewReader(mustJSON(t, body)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	req.Header.Set("Content-Type", "application/json")
+	// No keep-alive pooling: a pooled connection to a shut-down test server
+	// would surface as an EOF instead of a fresh dial.
+	client := http.Client{Transport: &http.Transport{DisableKeepAlives: true}}
+	resp, err := client.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+	rec := httptest.NewRecorder()
+	rec.Code = resp.StatusCode
+	data := map[string]any{}
+	_ = json.NewDecoder(resp.Body).Decode(&data)
+	return rec, data
+}
+
+// freePort reserves an ephemeral port and returns it. The listener is closed
+// immediately; the tiny reuse window is acceptable for tests and each test
+// gets a different port, so nothing can collide or share pooled connections.
+func freePort(t *testing.T) int {
+	t.Helper()
+	listener, err := (&net.ListenConfig{}).Listen(context.Background(), "tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatal(err)
+	}
+	port := listener.Addr().(*net.TCPAddr).Port
+	_ = listener.Close()
+	return port
+}
+
+func mustJSON(t *testing.T, v any) string {
+	t.Helper()
+	raw, err := json.Marshal(v)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return string(raw)
+}
+
+func TestWizardSavesConfigWithStrictPermissions(t *testing.T) {
+	sup := &fakeSup{}
+	server, base := newTestServer(t, sup)
+
+	rec, _ := postJSON(t, base, "/api/config", map[string]any{
+		"coordinator_url": "http://192.168.1.10:8080",
+		"token":           "sm_live_secret",
+		"work_dir":        "/home/emil/scimesh-worker",
+		"worker_name":     "emil-laptop",
+		"cpu_count":       8,
+		"memory_mb":       16384,
+	})
+	if rec.Code != http.StatusOK {
+		t.Fatalf("save config: got %d, want 200", rec.Code)
+	}
+	info, err := os.Stat(server.cfgPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if perm := info.Mode().Perm(); perm != 0o600 {
+		t.Errorf("config perms = %o, want 600", perm)
+	}
+	config, err := agent.LoadConfigFile(server.cfgPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if config.CoordinatorURL != "http://192.168.1.10:8080" || config.Token != "sm_live_secret" || config.WorkDir != "/home/emil/scimesh-worker" || config.WorkerName != "emil-laptop" {
+		t.Errorf("config = %+v", config)
+	}
+	if config.CPUCount != 8 || config.MemoryMB != 16384 {
+		t.Errorf("resources: cpu=%d mem=%d", config.CPUCount, config.MemoryMB)
+	}
+}
+
+func TestWizardRejectsInvalidConfig(t *testing.T) {
+	sup := &fakeSup{}
+	_, base := newTestServer(t, sup)
+
+	for _, body := range []map[string]any{
+		{"coordinator_url": "", "token": "x"},
+		{"coordinator_url": "not-a-url", "token": "x"},
+	} {
+		rec, _ := postJSON(t, base, "/api/config", body)
+		if rec.Code != http.StatusBadRequest {
+			t.Errorf("body %v: got %d, want 400", body, rec.Code)
+		}
+	}
+}
+
+func TestWizardStartStopLifecycle(t *testing.T) {
+	sup := &fakeSup{}
+	_, base := newTestServer(t, sup)
+
+	// Starting without a saved config is rejected.
+	rec, _ := postJSON(t, base, "/api/start", map[string]any{})
+	if rec.Code != http.StatusBadRequest {
+		t.Errorf("start without config: got %d, want 400", rec.Code)
+	}
+
+	postJSON(t, base, "/api/config", map[string]any{
+		"coordinator_url": "http://127.0.0.1:8080", "token": "t", "work_dir": ".",
+	})
+	rec, data := postJSON(t, base, "/api/start", map[string]any{})
+	if rec.Code != http.StatusOK || int(data["pid"].(float64)) != 4242 {
+		t.Errorf("start: got %d %v, want 200 pid 4242", rec.Code, data)
+	}
+	if !sup.started {
+		t.Error("supervisor never started the worker")
+	}
+
+	// Status reflects the running state.
+	req, _ := http.NewRequestWithContext(context.Background(), http.MethodGet, base+"/api/status", nil)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+	var status map[string]any
+	_ = json.NewDecoder(resp.Body).Decode(&status)
+	if status["running"] != true || status["pid"] != float64(4242) {
+		t.Errorf("status = %v, want running pid 4242", status)
+	}
+
+	rec, _ = postJSON(t, base, "/api/stop", map[string]any{})
+	if rec.Code != http.StatusOK || !sup.stopped {
+		t.Errorf("stop: got %d stopped=%v, want 200/true", rec.Code, sup.stopped)
+	}
+}
+
+func TestWizardStatusPrefillsSavedConfig(t *testing.T) {
+	sup := &fakeSup{}
+	_, base := newTestServer(t, sup)
+	postJSON(t, base, "/api/config", map[string]any{
+		"coordinator_url": "http://10.0.0.5:8080", "worker_key": "smk_abc", "work_dir": "/w", "worker_name": "n1",
+	})
+	req, _ := http.NewRequestWithContext(context.Background(), http.MethodGet, base+"/api/status", nil)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+	var status struct {
+		ConfigPresent bool   `json:"config_present"`
+		WorkerName    string `json:"worker_name"`
+		Coordinator   string `json:"coordinator"`
+		TokenSet      bool   `json:"token_set"`
+	}
+	_ = json.NewDecoder(resp.Body).Decode(&status)
+	if !status.ConfigPresent || status.WorkerName != "n1" || status.Coordinator != "http://10.0.0.5:8080" || !status.TokenSet {
+		t.Errorf("status = %+v", status)
+	}
+	// The secret must never appear in the status projection.
+	if strings.Contains(strings.ToLower(mustJSON(t, status)), "smk_abc") {
+		t.Error("status leaks the worker key")
+	}
+}
+
+func TestCheckCoordinatorReachable(t *testing.T) {
+	stub := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/health" {
+			_, _ = w.Write([]byte(`{"status":"ok"}`))
+			return
+		}
+		http.NotFound(w, r)
+	}))
+	defer stub.Close()
+
+	report := agent.CheckCoordinator(context.Background(), stub.URL, 5*time.Second)
+	if !report.Coordinator.OK {
+		t.Errorf("coordinator check = %+v, want ok", report.Coordinator)
+	}
+}
+
+func TestCheckCoordinatorUnreachable(t *testing.T) {
+	report := agent.CheckCoordinator(context.Background(), "http://127.0.0.1:1", 2*time.Second)
+	if report.Coordinator.OK {
+		t.Error("unreachable coordinator reported ok")
+	}
+}
+
+func TestConfigFileDefaultsAndEnvOverride(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "config.json")
+	file := agent.ConfigFile{
+		CoordinatorURL: "http://coord:8080",
+		Token:          "file-token",
+		WorkDir:        "/w",
+		CPUCount:       4,
+	}
+	if err := agent.SaveConfigFile(path, file); err != nil {
+		t.Fatal(err)
+	}
+	t.Setenv("COORDINATOR_URL", "http://env:9090")
+	t.Setenv("WORKER_AUTH_TOKEN", "")
+	config, err := agent.LoadConfigFile(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if config.CoordinatorURL != "http://env:9090" {
+		t.Errorf("env must win: %s", config.CoordinatorURL)
+	}
+	if config.Token != "file-token" {
+		t.Errorf("token = %q, want the file value", config.Token)
+	}
+	if config.CPUCount != 4 {
+		t.Errorf("cpu = %d", config.CPUCount)
+	}
+}

coordinator/internal/agent/setupui/template.html

@@ -0,0 +1,310 @@
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>SciMesh Worker · Setup</title>
+<style>
+:root{--bg:#0b0e13;--panel:#11151d;--panel-2:#161c27;--border:#1f2634;--border-soft:#181f2b;--text:#e9ecf3;--text-2:#98a2b5;--text-3:#5d6879;--accent:#5b8cff;--accent-soft:#5b8cff1f;--accent-strong:#3f6fe0;--green:#3fce8a;--green-soft:#3fce8a1a;--amber:#e5b64f;--amber-soft:#e5b64f1a;--red:#f2647c;--red-soft:#f2647c1a;--mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,monospace;color-scheme:dark}
+*{box-sizing:border-box;margin:0;padding:0}
+body{background:radial-gradient(900px 500px at 50% -180px,#16233d66,transparent),var(--bg);color:var(--text);font:14px/1.55 Inter,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;min-height:100vh}
+button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
+input{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--border);border-radius:9px;padding:10px 13px;width:100%;outline:none;transition:border-color .12s,box-shadow .12s}
+input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
+input::placeholder{color:var(--text-3)}
+code{font-family:var(--mono);font-size:.86em}
+.shell{max-width:660px;margin:0 auto;padding:44px 22px 70px}
+.brand{display:flex;align-items:center;justify-content:center;gap:11px;margin-bottom:8px}
+.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#5b8cff,#7c5cff);box-shadow:0 4px 16px #5b8cff40}
+.brand-mark svg{width:18px;height:18px;stroke:#fff}
+.brand-name{font-weight:700;font-size:16px;letter-spacing:-.01em}
+.brand-name span{color:var(--text-3);font-weight:500}
+.tagline{text-align:center;color:var(--text-3);font-size:12.5px;margin-bottom:34px}
+.tagline code{color:var(--text-2)}
+.steps{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:30px}
+.step{display:flex;flex-direction:column;align-items:center;gap:7px;width:96px}
+.step-dot{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;border:1.5px solid var(--border);background:var(--panel);color:var(--text-3);font-size:12.5px;font-weight:700;transition:all .2s}
+.step-label{font-size:11px;font-weight:600;color:var(--text-3);letter-spacing:.02em}
+.step.active .step-dot{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);box-shadow:0 0 0 4px #5b8cff14}
+.step.active .step-label{color:var(--text)}
+.step.done .step-dot{border-color:var(--green);background:var(--green-soft);color:var(--green)}
+.step.done .step-label{color:var(--text-2)}
+.step-line{flex:1;max-width:44px;height:1.5px;background:var(--border);margin:0 6px 22px;position:relative;overflow:hidden}
+.step-line.done:after{content:"";position:absolute;inset:0;background:var(--green)}
+.card{background:var(--panel);border:1px solid var(--border-soft);border-radius:15px;padding:26px 28px;box-shadow:0 24px 60px #0000004d}
+.card h1{font-size:18px;font-weight:700;letter-spacing:-.02em;margin-bottom:4px}
+.card .sub{color:var(--text-2);font-size:13px;margin-bottom:22px}
+.field{margin-bottom:16px}
+.field label{display:block;font-size:12px;font-weight:650;letter-spacing:.04em;text-transform:uppercase;color:var(--text-3);margin-bottom:7px}
+.field .hint{margin-top:6px;font-size:12px;color:var(--text-3)}
+.field .hint code{color:var(--text-2)}
+.radio-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
+.radio-card{border:1px solid var(--border);border-radius:11px;padding:13px 14px;cursor:pointer;transition:all .13s;background:var(--panel-2)}
+.radio-card:hover{border-color:#2a3446}
+.radio-card.sel{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px #5b8cff14}
+.radio-card b{display:flex;align-items:center;gap:8px;font-size:13.5px}
+.radio-card b svg{width:15px;height:15px;stroke:var(--accent)}
+.radio-card p{margin-top:4px;font-size:12px;color:var(--text-2)}
+.check-row{display:flex;align-items:center;gap:12px;padding:11px 14px;border:1px solid var(--border-soft);border-radius:10px;margin-bottom:9px;background:var(--panel-2)}
+.check-ic{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;flex:none}
+.check-ic svg{width:13px;height:13px;stroke-width:2.6}
+.check-ok{background:var(--green-soft)}.check-ok svg{stroke:var(--green)}
+.check-bad{background:var(--red-soft)}.check-bad svg{stroke:var(--red)}
+.check-wait{background:#ffffff10}.check-wait svg{stroke:var(--text-3)}
+.check-row b{font-size:13.5px;font-weight:600}
+.check-row span{display:block;font-size:12px;color:var(--text-3)}
+.check-row .ms{margin-left:auto;font:11.5px var(--mono);color:var(--text-3)}
+.actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:24px}
+.btn{display:inline-flex;align-items:center;gap:8px;border-radius:9px;padding:10px 18px;font-weight:650;font-size:13.5px;border:1px solid transparent;transition:all .13s}
+.btn svg{width:15px;height:15px;stroke:currentColor}
+.btn-primary{background:var(--accent);color:#0a1222}
+.btn-primary:hover{background:var(--accent-strong);color:#fff}
+.btn-ghost{border-color:var(--border);color:var(--text-2);background:var(--panel-2)}
+.btn-ghost:hover{color:var(--text);border-color:#2a3446}
+.btn-danger{background:var(--red-soft);color:var(--red)}
+.btn-lg{padding:12px 24px;font-size:14.5px;border-radius:10px}
+.link{color:var(--text-3);font-size:13px}
+.link:hover{color:var(--text)}
+.status-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
+.pulse{position:relative;width:12px;height:12px;border-radius:50%;background:var(--green);flex:none}
+.pulse:after{content:"";position:absolute;inset:-5px;border-radius:50%;border:2px solid var(--green);opacity:.5;animation:ping 1.6s ease-out infinite}
+@keyframes ping{from{transform:scale(.6);opacity:.7}to{transform:scale(1.4);opacity:0}}
+.status-head h1{font-size:19px}
+.status-head .sub{font-size:12.5px;color:var(--text-3)}
+.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:18px}
+.stat{background:var(--panel-2);border:1px solid var(--border-soft);border-radius:11px;padding:12px 14px}
+.stat b{display:block;font-size:20px;font-weight:700;letter-spacing:-.02em}
+.stat span{font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-3)}
+.stat.bad b{color:var(--red)}
+.logbox{background:#0a0d12;border:1px solid var(--border-soft);border-radius:11px;padding:14px 16px;font:12px/1.7 var(--mono);color:#8fa3bf;max-height:210px;overflow-y:auto;white-space:pre-wrap;word-break:break-word}
+.meta-line{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
+.chip{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:99px;padding:4px 11px;font-size:12px;color:var(--text-2);background:var(--panel-2)}
+.chip svg{width:12px;height:12px;stroke:var(--text-3)}
+.wizard-page{display:none}.wizard-page.active{display:block;animation:fade .18s ease}
+@keyframes fade{from{opacity:0;transform:translateY(5px)}to{opacity:1}}
+.error-strip{background:var(--red-soft);border:1px solid #f2647c33;border-radius:9px;padding:9px 12px;font-size:12.5px;color:#ffb3c0;margin-bottom:14px}
+.spinner{display:inline-block;width:13px;height:13px;border:2px solid var(--text-3);border-top-color:transparent;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px;margin-right:7px}
+@keyframes spin{to{transform:rotate(360deg)}}
+.checks{padding-bottom:6px}
+</style>
+</head>
+<body>
+<div class="shell">
+  <div class="brand">
+    <div class="brand-mark"><svg viewBox="0 0 24 24" fill="none" stroke-width="2" stroke-linecap="round"><circle cx="6" cy="6" r="2.4"/><circle cx="18" cy="7" r="2.4"/><circle cx="12" cy="17" r="2.4"/><path d="M8 7.5l7.6-1M7 8.3l3.7 6.5M16.6 9.2l-3.2 5.6"/></svg></div>
+    <div class="brand-name">SciMesh <span>· Worker setup</span></div>
+  </div>
+  <p class="tagline">Local wizard served by <code>worker-agent setup</code> · <code>127.0.0.1</code></p>
+
+  <!-- ═══ WIZARD VIEW ═══ -->
+  <div id="view-wizard">
+    <div class="steps" id="steps">
+      <div class="step active" id="st1"><div class="step-dot">1</div><div class="step-label">Connect</div></div>
+      <div class="step-line" id="sl1"></div>
+      <div class="step" id="st2"><div class="step-dot">2</div><div class="step-label">Machine</div></div>
+      <div class="step-line" id="sl2"></div>
+      <div class="step" id="st3"><div class="step-dot">3</div><div class="step-label">Check</div></div>
+      <div class="step-line" id="sl3"></div>
+      <div class="step" id="st4"><div class="step-dot">4</div><div class="step-label">Run</div></div>
+    </div>
+    <div id="error-box"></div>
+
+    <!-- step 1: connect -->
+    <div class="wizard-page active" id="wp1">
+      <div class="card">
+        <h1>Connect to a coordinator</h1>
+        <p class="sub">The coordinator hands out work and collects results. Ask your cluster admin for its address.</p>
+        <div class="field"><label>Coordinator URL</label><input id="in-url" placeholder="http://192.168.1.10:8080"><p class="hint">For a served instance this is the address printed by <code>coordinator serve</code>.</p></div>
+        <div class="field"><label>Authentication</label>
+          <div class="radio-grid" id="auth-grid">
+            <div class="radio-card sel" data-mode="token"><b><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><rect x="4" y="10" width="16" height="10" rx="2"/><path d="M8 10V7a4 4 0 0 1 8 0v3"/></svg>Cluster token</b><p>Serve instances: one token for every worker.</p></div>
+            <div class="radio-card" data-mode="key"><b><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><circle cx="8" cy="14" r="4"/><path d="M10.8 11.2L20 2M15 4l3 3"/></svg>Worker key</b><p>Shared clusters: a key tied to your account.</p></div>
+          </div>
+        </div>
+        <div class="field" id="token-field"><label>Token</label><input id="in-token" type="password" placeholder="paste the token from coordinator token"><p class="hint">The admin can copy it from <code>coordinator token</code> on the server.</p></div>
+        <div class="field" id="key-field" style="display:none"><label>Worker key + userservice URL</label><input id="in-key" type="password" placeholder="smk_…"><input id="in-users" placeholder="http://userservice-host:8081" style="margin-top:8px"><p class="hint">Create a key in the coordinator UI: Users → worker keys.</p></div>
+        <div class="actions"><span class="link" id="l1">Step 1 of 4</span><button class="btn btn-primary" id="b1">Continue →</button></div>
+      </div>
+    </div>
+
+    <!-- step 2: machine -->
+    <div class="wizard-page" id="wp2">
+      <div class="card">
+        <h1>This machine</h1>
+        <p class="sub">Where tasks run and how the machine appears in the cluster.</p>
+        <div class="field"><label>Worker name</label><input id="in-name" placeholder="auto-detected"><p class="hint">Shown in the coordinator’s worker list.</p></div>
+        <div class="field"><label>Work directory</label><input id="in-dir" placeholder="./scimesh-agent-data"><p class="hint">Datasets and shard results live here. ~1 GB free space recommended.</p></div>
+        <div class="field"><label>Compute resources advertised</label>
+          <div class="radio-grid">
+            <div class="radio-card sel" data-cpu="auto"><b>Auto</b><p>Detect the machine’s CPU count.</p></div>
+            <div class="radio-card" data-cpu="custom"><b>Custom…</b><p>Limit what this machine advertises.</p></div>
+          </div>
+        </div>
+        <div class="field" id="cpu-field" style="display:none"><label>CPU count</label><input id="in-cpu" type="number" min="1" value="1"></div>
+        <div class="actions"><button class="btn btn-ghost" id="b2b">← Back</button><button class="btn btn-primary" id="b2">Continue →</button></div>
+      </div>
+    </div>
+
+    <!-- step 3: preflight -->
+    <div class="wizard-page" id="wp3">
+      <div class="card">
+        <h1>Preflight check</h1>
+        <p class="sub">Making sure this machine can reach the coordinator and run SciMesh workloads.</p>
+        <div class="checks" id="checks"></div>
+        <div class="actions"><button class="btn btn-ghost" id="b3b">← Back</button><button class="btn btn-primary" id="b3" disabled>Continue anyway →</button></div>
+      </div>
+    </div>
+
+    <!-- step 4: run -->
+    <div class="wizard-page" id="wp4">
+      <div class="card" style="text-align:center;padding:40px 28px">
+        <div class="brand-mark" style="margin:0 auto 18px;width:46px;height:46px;border-radius:13px"><svg viewBox="0 0 24 24" fill="none" stroke-width="2" stroke-linecap="round" style="width:22px;height:22px"><path d="M6 4l14 8-14 8V4z"/></svg></div>
+        <h1 style="font-size:20px">Ready to join the cluster</h1>
+        <p class="sub" style="max-width:380px;margin:8px auto 26px">Configuration will be saved and the worker started as a background process.</p>
+        <div class="actions" style="justify-content:space-between;margin-top:30px"><button class="btn btn-ghost" id="b4b">← Back</button><button class="btn btn-primary btn-lg" id="b4">Start worker</button></div>
+      </div>
+    </div>
+  </div>
+
+  <!-- ═══ STATUS VIEW ═══ -->
+  <div id="view-status" style="display:none">
+    <div class="card">
+      <div class="status-head">
+        <div class="pulse" id="st-pulse"></div>
+        <div><h1 id="st-title">Worker is working</h1><div class="sub" id="st-sub">—</div></div>
+        <button class="btn btn-danger" id="st-stop" style="margin-left:auto"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><rect x="6" y="6" width="12" height="12" rx="2"/></svg>Stop</button>
+      </div>
+      <div class="meta-line" id="st-meta"></div>
+      <div class="logbox" id="st-log"></div>
+      <div class="actions"><span class="link" id="st-cfg">—</span><button class="btn btn-ghost" id="st-reconfig">Reconfigure…</button></div>
+    </div>
+  </div>
+</div>
+
+<script>
+const $=id=>document.getElementById(id);
+let state={mode:'token',cpu:'auto'};
+let checksOk=false;
+
+function err(msg){$('error-box').innerHTML=msg?'<div class="error-strip">'+msg+'</div>':''}
+function goto(n){
+  ['wp1','wp2','wp3','wp4'].forEach((id,i)=>$(id).classList.toggle('active',i===n-1));
+  for(let i=1;i<=4;i++){
+    const st=$('st'+i);
+    st.classList.toggle('done',i<n);st.classList.toggle('active',i===n);
+    st.querySelector('.step-dot').textContent=i<n?'✓':i;
+    if(i<4)$('sl'+i).classList.toggle('done',i<n);
+  }
+  err('');
+}
+document.querySelectorAll('#auth-grid .radio-card').forEach(c=>c.addEventListener('click',()=>{
+  document.querySelectorAll('#auth-grid .radio-card').forEach(x=>x.classList.remove('sel'));
+  c.classList.add('sel');state.mode=c.dataset.mode;
+  $('token-field').style.display=state.mode==='token'?'':'none';
+  $('key-field').style.display=state.mode==='key'?'':'none';
+}));
+document.querySelectorAll('#wp2 .radio-card').forEach(c=>c.addEventListener('click',()=>{
+  c.parentElement.querySelectorAll('.radio-card').forEach(x=>x.classList.remove('sel'));
+  c.classList.add('sel');state.cpu=c.dataset.cpu;
+  $('cpu-field').style.display=state.cpu==='custom'?'':'none';
+}));
+
+async function postJSON(path,body){
+  const r=await fetch(path,{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(body)});
+  const data=await r.json().catch(()=>({}));
+  return {status:r.status,data};
+}
+function draftConfig(){
+  return {
+    coordinator_url:$('in-url').value.trim(),
+    token:state.mode==='token'?$('in-token').value.trim():'',
+    worker_key:state.mode==='key'?$('in-key').value.trim():'',
+    userservice_url:state.mode==='key'?$('in-users').value.trim():'',
+    work_dir:$('in-dir').value.trim(),
+    worker_name:$('in-name').value.trim(),
+    cpu_count:state.cpu==='custom'?parseInt($('in-cpu').value||'1',10):0
+  };
+}
+
+$('b1').onclick=()=>{
+  const c=draftConfig();
+  if(!c.coordinator_url){err('Enter the coordinator URL.');return}
+  if(state.mode==='token'&&!c.token){err('Enter the cluster token.');return}
+  if(state.mode==='key'&&!c.worker_key){err('Enter the worker key.');return}
+  goto(2);
+};
+$('b2b').onclick=()=>goto(1);
+$('b2').onclick=()=>{goto(3);runChecks()};
+$('b3b').onclick=()=>goto(2);
+$('b3').onclick=()=>goto(4);
+$('b4b').onclick=()=>goto(3);
+$('b4').onclick=async()=>{
+  const c=draftConfig();
+  const r=await postJSON('/api/config',c);
+  if(r.status!==200){err('Could not save the configuration: '+(r.data.error||'unknown error'));return}
+  const s=await postJSON('/api/start',{});
+  if(s.status!==200){err('Could not start the worker: '+(s.data.error||'unknown error'));return}
+  showStatus();
+};
+
+const checkRow=(name,ok,detail,ms)=>
+  '<div class="check-row"><div class="check-ic '+(ok===null?'check-wait':ok?'check-ok':'check-bad')+'"><svg viewBox="0 0 24 24" fill="none" stroke-linecap="round">'+(ok===null?'<path d="M12 7v5l3 3"/>':ok?'<path d="M4 12l5 5L20 6"/>':'<path d="M6 6l12 12M18 6L6 18"/>')+'</svg></div><div><b>'+name+'</b><span>'+(detail||'')+'</span></div>'+(ms?'<span class="ms">'+ms+' ms</span>':'')+'</div>';
+async function runChecks(){
+  const box=$('checks');
+  box.innerHTML=checkRow('Coordinator reachable','',null,null)+checkRow('Python 3','',null,null)+checkRow('scimesh package','',null,null);
+  const r=await postJSON('/api/test',draftConfig());
+  box.innerHTML='';
+  checksOk=true;
+  const items=[r.data.coordinator,r.data.python,r.data.scimesh];
+  for(const item of items){
+    if(item&&!item.ok)checksOk=false;
+    box.insertAdjacentHTML('beforeend',checkRow(item?item.name:'?',item?item.ok:null,item?item.detail:'',item?item.latency_ms:null));
+  }
+  $('b3').disabled=!checksOk;
+}
+
+async function showStatus(){
+  $('view-wizard').style.display='none';
+  $('view-status').style.display='block';
+  await refreshStatus();
+  setInterval(refreshStatus,2000);
+}
+async function refreshStatus(){
+  const r=await fetch('/api/status');
+  if(!r.ok)return;
+  const v=await r.json();
+  $('st-pulse').style.background=v.running?'var(--green)':'var(--text-3)';
+  $('st-pulse').style.animation=v.running?'':'none';
+  $('st-title').textContent=v.running?(v.worker_name||'Worker')+' is working':(v.worker_name||'Worker')+' is stopped';
+  $('st-sub').textContent='pid '+(v.pid||'—')+' · config '+(v.config_present?v.config_path:'not saved yet');
+  $('st-cfg').textContent='Configuration: '+(v.config_present?v.config_path:'—');
+  const meta=$('st-meta');
+  meta.innerHTML='';
+  if(v.coordinator){const c=document.createElement('span');c.className='chip';c.innerHTML='<svg viewBox="0 0 24 24" fill="none" stroke-width="2"><circle cx="12" cy="12" r="9"/></svg>'+v.coordinator;meta.append(c)}
+  if(v.work_dir){const d=document.createElement('span');d.className='chip';d.innerHTML='<svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M4 6h16M4 12h16M4 18h16"/></svg>'+v.work_dir;meta.append(d)}
+  if(!v.token_set){const t=document.createElement('span');t.className='chip';t.style.color='var(--amber)';t.textContent='no credential set';meta.append(t)}
+  const logs=await fetch('/api/logs?tail=200');
+  const lv=await logs.json();
+  $('st-log').textContent=lv.log||'(no log yet — the worker writes here once started)';
+}
+$('st-stop').onclick=async()=>{await postJSON('/api/stop',{});refreshStatus()};
+$('st-reconfig').onclick=()=>{
+  $('view-status').style.display='none';
+  $('view-wizard').style.display='block';
+  goto(1);
+};
+
+// Prefill from a saved configuration, then decide which view to show.
+(async()=>{
+  const r=await fetch('/api/status');
+  const v=await r.json();
+  if(v.config_present){
+    $('in-url').value=v.coordinator||'';
+    $('in-dir').value=v.work_dir||'';
+    $('in-name').value=v.worker_name||'';
+  }
+  if(v.running)showStatus();
+})();
+</script>
+</body>
+</html>

coordinator/internal/domain/errors.go

@@ -18,4 +18,5 @@ var (
 	ErrResultConflict    = errors.New("different result already recorded")
 	ErrInvalidInput      = errors.New("invalid input")
 	ErrTaskNotLeased     = errors.New("task is not currently leased")
+	ErrWorkloadDisabled  = errors.New("workload is disabled")
 )

coordinator/internal/memstore/memstore.go

@@ -314,6 +314,17 @@ func (r *WorkerRepo) MarkStaleOffline(ctx context.Context, cutoff time.Time) (in
 	return n, nil
 }
 
+func (r *WorkerRepo) SetTrust(ctx context.Context, id uuid.UUID, trust domain.WorkerTrust) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	w, ok := r.workers[id]
+	if !ok {
+		return domain.ErrWorkerNotFound
+	}
+	w.TrustLevel = trust
+	return nil
+}
+
 // --- ArtifactRepo --------------------------------------------------------
 
 type ArtifactRepo struct {

coordinator/internal/storage/postgres/admin_read_repo.go

@@ -0,0 +1,198 @@
+package postgres
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	sq "github.com/Masterminds/squirrel"
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/domain"
+	"github.com/emil28092005/SciMesh/coordinator/internal/usecase"
+)
+
+// AdminReadRepo backs the coordinator admin console: paginated jobs, status
+// counters, metrics buckets and storage figures. Read-only.
+type AdminReadRepo struct{ pool *pgxpool.Pool }
+
+func NewAdminReadRepo(pool *pgxpool.Pool) *AdminReadRepo { return &AdminReadRepo{pool: pool} }
+
+var _ usecase.AdminReadRepository = (*AdminReadRepo)(nil)
+
+func (r *AdminReadRepo) ListJobsPaginated(ctx context.Context, status string, limit, offset int) ([]domain.Job, int, error) {
+	if limit < 1 || limit > 100 || offset < 0 {
+		return nil, 0, domain.ErrInvalidInput
+	}
+	countQ := psql.Select("COUNT(*)").From("jobs")
+	listQ := psql.Select(jobColumns...).From("jobs")
+	if status != "" {
+		countQ = countQ.Where(sq.Eq{"status": status})
+		listQ = listQ.Where(sq.Eq{"status": status})
+	}
+	countSQL, args, err := countQ.ToSql()
+	if err != nil {
+		return nil, 0, err
+	}
+	var total int
+	if err := conn(ctx, r.pool).QueryRow(ctx, countSQL, args...).Scan(&total); err != nil {
+		return nil, 0, fmt.Errorf("count jobs: %w", err)
+	}
+	listSQL, args, err := listQ.OrderBy("created_at DESC", "id DESC").Limit(uint64(limit)).Offset(uint64(offset)).ToSql()
+	if err != nil {
+		return nil, 0, err
+	}
+	rows, err := conn(ctx, r.pool).Query(ctx, listSQL, args...)
+	if err != nil {
+		return nil, 0, fmt.Errorf("list jobs paginated: %w", err)
+	}
+	defer rows.Close()
+	jobs := make([]domain.Job, 0)
+	for rows.Next() {
+		var j domain.Job
+		var statusRaw string
+		if err := rows.Scan(
+			&j.ID, &j.Workload, &j.InputURI, &j.Parameters, &statusRaw, &j.CreatedAt, &j.CompletedAt,
+			&j.InputArtifactID, &j.ResultArtifactID, &j.ErrorCode, &j.ErrorMessage, &j.ReducerStartedAt,
+			&j.OwnerID,
+		); err != nil {
+			return nil, 0, err
+		}
+		j.Status = domain.JobStatus(statusRaw)
+		jobs = append(jobs, j)
+	}
+	return jobs, total, rows.Err()
+}
+
+func (r *AdminReadRepo) CountJobsByStatus(ctx context.Context) (map[string]int, error) {
+	rows, err := conn(ctx, r.pool).Query(ctx, "SELECT status, COUNT(*) FROM jobs GROUP BY status")
+	if err != nil {
+		return nil, fmt.Errorf("count jobs by status: %w", err)
+	}
+	defer rows.Close()
+	out := make(map[string]int)
+	for rows.Next() {
+		var status string
+		var count int
+		if err := rows.Scan(&status, &count); err != nil {
+			return nil, err
+		}
+		out[status] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) TaskCountsByJobs(ctx context.Context, jobIDs []uuid.UUID) (map[uuid.UUID]map[string]int, error) {
+	out := make(map[uuid.UUID]map[string]int, len(jobIDs))
+	if len(jobIDs) == 0 {
+		return out, nil
+	}
+	sql, args, err := psql.Select("job_id", "status", "COUNT(*)").From("tasks").
+		Where(sq.Eq{"job_id": jobIDs}).GroupBy("job_id", "status").ToSql()
+	if err != nil {
+		return nil, err
+	}
+	rows, err := conn(ctx, r.pool).Query(ctx, sql, args...)
+	if err != nil {
+		return nil, fmt.Errorf("task counts by jobs: %w", err)
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var jobID uuid.UUID
+		var status string
+		var count int
+		if err := rows.Scan(&jobID, &status, &count); err != nil {
+			return nil, err
+		}
+		if out[jobID] == nil {
+			out[jobID] = make(map[string]int)
+		}
+		out[jobID][status] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) JobCountsByDay(ctx context.Context, since time.Time) (map[string]int, error) {
+	rows, err := conn(ctx, r.pool).Query(ctx,
+		"SELECT to_char(date_trunc('day', created_at AT TIME ZONE 'UTC'), 'YYYY-MM-DD') AS day, COUNT(*) FROM jobs WHERE created_at >= $1 GROUP BY 1",
+		since.UTC())
+	if err != nil {
+		return nil, fmt.Errorf("job counts by day: %w", err)
+	}
+	defer rows.Close()
+	out := make(map[string]int)
+	for rows.Next() {
+		var day string
+		var count int
+		if err := rows.Scan(&day, &count); err != nil {
+			return nil, err
+		}
+		out[day] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) JobCountsByWorkload(ctx context.Context) (map[string]int, error) {
+	rows, err := conn(ctx, r.pool).Query(ctx, "SELECT workload, COUNT(*) FROM jobs GROUP BY workload")
+	if err != nil {
+		return nil, fmt.Errorf("job counts by workload: %w", err)
+	}
+	defer rows.Close()
+	out := make(map[string]int)
+	for rows.Next() {
+		var workload string
+		var count int
+		if err := rows.Scan(&workload, &count); err != nil {
+			return nil, err
+		}
+		out[workload] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) TaskStats(ctx context.Context) (int64, int64, float64, error) {
+	var completed, failed int64
+	var avgSeconds *float64
+	err := conn(ctx, r.pool).QueryRow(ctx, `
+		SELECT
+			COALESCE(SUM(CASE WHEN status = 'completed' THEN 1 ELSE 0 END), 0),
+			COALESCE(SUM(CASE WHEN status = 'failed' THEN 1 ELSE 0 END), 0),
+			AVG(CASE WHEN status = 'completed' AND started_at IS NOT NULL
+				THEN EXTRACT(EPOCH FROM completed_at - started_at) END)::float8
+		FROM tasks`).Scan(&completed, &failed, &avgSeconds)
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("task stats: %w", err)
+	}
+	var avg float64
+	if avgSeconds != nil {
+		avg = *avgSeconds
+	}
+	return completed, failed, avg, nil
+}
+
+func (r *AdminReadRepo) ArtifactSizeByKind(ctx context.Context) (map[string]int64, error) {
+	rows, err := conn(ctx, r.pool).Query(ctx, "SELECT kind, COALESCE(SUM(size_bytes), 0) FROM artifacts GROUP BY kind")
+	if err != nil {
+		return nil, fmt.Errorf("artifact sizes: %w", err)
+	}
+	defer rows.Close()
+	out := make(map[string]int64)
+	for rows.Next() {
+		var kind string
+		var size int64
+		if err := rows.Scan(&kind, &size); err != nil {
+			return nil, err
+		}
+		out[kind] = size
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) DatabaseSizeBytes(ctx context.Context) (int64, error) {
+	var size int64
+	if err := conn(ctx, r.pool).QueryRow(ctx, "SELECT pg_database_size(current_database())").Scan(&size); err != nil {
+		return 0, fmt.Errorf("database size: %w", err)
+	}
+	return size, nil
+}

coordinator/internal/storage/postgres/migrate_test.go

@@ -54,6 +54,8 @@ func expectedMigrationName(version int) string {
 		return "0012_worker_trust.up.sql"
 	case 13:
 		return "0013_task_results.up.sql"
+	case 14:
+		return "0014_workload_settings.up.sql"
 	default:
 		return ""
 	}

coordinator/internal/storage/postgres/migrations/0014_workload_settings.down.sql

@@ -0,0 +1,5 @@
+BEGIN;
+
+DROP TABLE IF EXISTS workload_settings;
+
+COMMIT;

coordinator/internal/storage/postgres/migrations/0014_workload_settings.up.sql

@@ -0,0 +1,11 @@
+BEGIN;
+
+-- Per-workload enable/disable. Absence of a row means "enabled" (the catalog
+-- default); a row only exists once an admin flipped a workload off or back on.
+CREATE TABLE workload_settings (
+    workload   text        NOT NULL PRIMARY KEY,
+    enabled    boolean     NOT NULL,
+    updated_at timestamptz NOT NULL DEFAULT now()
+);
+
+COMMIT;

coordinator/internal/storage/postgres/worker_repo.go

@@ -91,6 +91,24 @@ func (r *WorkerRepo) MarkStaleOffline(ctx context.Context, cutoff time.Time) (in
 	return tag.RowsAffected(), nil
 }
 
+func (r *WorkerRepo) SetTrust(ctx context.Context, id uuid.UUID, trust domain.WorkerTrust) error {
+	sql, args, err := psql.Update("workers").
+		SetMap(map[string]any{"trust_level": string(trust), "updated_at": time.Now()}).
+		Where(sq.Eq{"id": id}).
+		ToSql()
+	if err != nil {
+		return err
+	}
+	tag, err := conn(ctx, r.pool).Exec(ctx, sql, args...)
+	if err != nil {
+		return fmt.Errorf("set worker trust: %w", err)
+	}
+	if tag.RowsAffected() == 0 {
+		return domain.ErrWorkerNotFound
+	}
+	return nil
+}
+
 func scanWorker(row pgx.Row) (*domain.Worker, error) {
 	var (
 		w      domain.Worker

coordinator/internal/storage/postgres/workload_settings_repo.go

@@ -0,0 +1,67 @@
+package postgres
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/usecase"
+)
+
+// WorkloadSettingsRepo persists the per-workload enable/disable overrides.
+// Absence of a row means the workload is enabled (the catalog default).
+type WorkloadSettingsRepo struct{ pool *pgxpool.Pool }
+
+func NewWorkloadSettingsRepo(pool *pgxpool.Pool) *WorkloadSettingsRepo {
+	return &WorkloadSettingsRepo{pool: pool}
+}
+
+var _ usecase.WorkloadSettingsRepository = (*WorkloadSettingsRepo)(nil)
+
+func (r *WorkloadSettingsRepo) GetEnabled(ctx context.Context, workload string) (bool, error) {
+	var enabled bool
+	err := conn(ctx, r.pool).QueryRow(ctx,
+		"SELECT enabled FROM workload_settings WHERE workload = $1", workload).Scan(&enabled)
+	if err != nil && err.Error() == "no rows in result set" {
+		return true, nil // no override: catalog default enabled
+	}
+	if err != nil {
+		return false, fmt.Errorf("get workload setting: %w", err)
+	}
+	return enabled, nil
+}
+
+func (r *WorkloadSettingsRepo) List(ctx context.Context) ([]usecase.WorkloadSetting, error) {
+	rows, err := conn(ctx, r.pool).Query(ctx,
+		"SELECT workload, enabled, updated_at FROM workload_settings ORDER BY workload ASC")
+	if err != nil {
+		return nil, fmt.Errorf("list workload settings: %w", err)
+	}
+	defer rows.Close()
+	var out []usecase.WorkloadSetting
+	for rows.Next() {
+		var s usecase.WorkloadSetting
+		if err := rows.Scan(&s.Workload, &s.Enabled, &s.UpdatedAt); err != nil {
+			return nil, err
+		}
+		out = append(out, s)
+	}
+	return out, rows.Err()
+}
+
+func (r *WorkloadSettingsRepo) SetEnabled(ctx context.Context, workload string, enabled bool, now time.Time) error {
+	sql, args, err := psql.Insert("workload_settings").
+		Columns("workload", "enabled", "updated_at").
+		Values(workload, enabled, now).
+		Suffix(`ON CONFLICT (workload) DO UPDATE SET enabled = EXCLUDED.enabled, updated_at = EXCLUDED.updated_at`).
+		ToSql()
+	if err != nil {
+		return err
+	}
+	if _, err := conn(ctx, r.pool).Exec(ctx, sql, args...); err != nil {
+		return fmt.Errorf("set workload setting: %w", err)
+	}
+	return nil
+}

coordinator/internal/storage/sqlite/admin_m2_test.go

@@ -0,0 +1,90 @@
+package sqlite
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/domain"
+)
+
+func TestWorkloadSettingsRepoRoundTrip(t *testing.T) {
+	db := newTestDB(t)
+	ctx := context.Background()
+	repo := NewWorkloadSettingsRepo(db)
+
+	// No override: enabled by default.
+	enabled, err := repo.GetEnabled(ctx, "similarity-search")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !enabled {
+		t.Error("workload without an override must be enabled")
+	}
+
+	now := time.Date(2026, 8, 2, 12, 0, 0, 0, time.UTC)
+	if err := repo.SetEnabled(ctx, "similarity-search", false, now); err != nil {
+		t.Fatal(err)
+	}
+	enabled, err = repo.GetEnabled(ctx, "similarity-search")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if enabled {
+		t.Error("workload must be disabled after the override")
+	}
+
+	// Upsert flips it back and updates the timestamp.
+	later := now.Add(time.Hour)
+	if err := repo.SetEnabled(ctx, "similarity-search", true, later); err != nil {
+		t.Fatal(err)
+	}
+	enabled, err = repo.GetEnabled(ctx, "similarity-search")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !enabled {
+		t.Error("workload must be re-enabled after the upsert")
+	}
+
+	list, err := repo.List(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(list) != 1 || list[0].Workload != "similarity-search" || !list[0].Enabled {
+		t.Errorf("list = %+v, want the single re-enabled override", list)
+	}
+}
+
+func TestWorkerSetTrust(t *testing.T) {
+	db := newTestDB(t)
+	ctx := context.Background()
+	repo := NewWorkerRepo(db)
+
+	worker, err := domain.NewWorker("lab-node", []string{"similarity-search"}, fixedTime())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := repo.Insert(ctx, worker); err != nil {
+		t.Fatal(err)
+	}
+	if err := repo.SetTrust(ctx, worker.ID, domain.WorkerUntrusted); err != nil {
+		t.Fatal(err)
+	}
+	got, err := repo.Get(ctx, worker.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.TrustLevel != domain.WorkerUntrusted {
+		t.Errorf("trust = %q, want untrusted", got.TrustLevel)
+	}
+	if err := repo.SetTrust(ctx, worker.ID, domain.WorkerTrusted); err != nil {
+		t.Fatal(err)
+	}
+	if err := repo.SetTrust(ctx, uuid.New(), domain.WorkerTrusted); !errors.Is(err, domain.ErrWorkerNotFound) {
+		t.Errorf("unknown worker trust err = %v, want ErrWorkerNotFound", err)
+	}
+}

coordinator/internal/storage/sqlite/admin_read_repo.go

@@ -0,0 +1,191 @@
+package sqlite
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/domain"
+	"github.com/emil28092005/SciMesh/coordinator/internal/usecase"
+)
+
+// AdminReadRepo backs the coordinator admin console: paginated jobs, status
+// counters, metrics buckets and storage figures. Read-only.
+type AdminReadRepo struct{ db *sql.DB }
+
+func NewAdminReadRepo(db *sql.DB) *AdminReadRepo { return &AdminReadRepo{db: db} }
+
+var _ usecase.AdminReadRepository = (*AdminReadRepo)(nil)
+
+func (r *AdminReadRepo) ListJobsPaginated(ctx context.Context, status string, limit, offset int) ([]domain.Job, int, error) {
+	if limit < 1 || limit > 100 || offset < 0 {
+		return nil, 0, domain.ErrInvalidInput
+	}
+	where := ""
+	args := []any{}
+	if status != "" {
+		where = " WHERE status = ?"
+		args = append(args, status)
+	}
+	var total int
+	if err := conn(ctx, r.db).QueryRowContext(ctx, "SELECT COUNT(*) FROM jobs"+where, args...).Scan(&total); err != nil {
+		return nil, 0, fmt.Errorf("count jobs: %w", err)
+	}
+	rows, err := conn(ctx, r.db).QueryContext(ctx,
+		"SELECT "+jobColumns+" FROM jobs"+where+" ORDER BY created_at DESC, id DESC LIMIT ? OFFSET ?",
+		append(args, limit, offset)...)
+	if err != nil {
+		return nil, 0, fmt.Errorf("list jobs paginated: %w", err)
+	}
+	defer func() { _ = rows.Close() }()
+	jobs := make([]domain.Job, 0)
+	for rows.Next() {
+		job, err := scanJob(rows)
+		if err != nil {
+			return nil, 0, err
+		}
+		jobs = append(jobs, *job)
+	}
+	return jobs, total, rows.Err()
+}
+
+func (r *AdminReadRepo) CountJobsByStatus(ctx context.Context) (map[string]int, error) {
+	rows, err := conn(ctx, r.db).QueryContext(ctx, "SELECT status, COUNT(*) FROM jobs GROUP BY status")
+	if err != nil {
+		return nil, fmt.Errorf("count jobs by status: %w", err)
+	}
+	defer func() { _ = rows.Close() }()
+	out := make(map[string]int)
+	for rows.Next() {
+		var status string
+		var count int
+		if err := rows.Scan(&status, &count); err != nil {
+			return nil, err
+		}
+		out[status] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) TaskCountsByJobs(ctx context.Context, jobIDs []uuid.UUID) (map[uuid.UUID]map[string]int, error) {
+	out := make(map[uuid.UUID]map[string]int, len(jobIDs))
+	if len(jobIDs) == 0 {
+		return out, nil
+	}
+	placeholders := make([]string, 0, len(jobIDs))
+	args := make([]any, 0, len(jobIDs))
+	for _, id := range jobIDs {
+		placeholders = append(placeholders, "?")
+		args = append(args, id.String())
+	}
+	rows, err := conn(ctx, r.db).QueryContext(ctx,
+		"SELECT job_id, status, COUNT(*) FROM tasks WHERE job_id IN ("+strings.Join(placeholders, ", ")+") GROUP BY job_id, status",
+		args...)
+	if err != nil {
+		return nil, fmt.Errorf("task counts by jobs: %w", err)
+	}
+	defer func() { _ = rows.Close() }()
+	for rows.Next() {
+		var jobRaw, status string
+		var count int
+		if err := rows.Scan(&jobRaw, &status, &count); err != nil {
+			return nil, err
+		}
+		jobID, err := uuid.Parse(jobRaw)
+		if err != nil {
+			return nil, fmt.Errorf("task counts: parse job id: %w", err)
+		}
+		if out[jobID] == nil {
+			out[jobID] = make(map[string]int)
+		}
+		out[jobID][status] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) JobCountsByDay(ctx context.Context, since time.Time) (map[string]int, error) {
+	// created_at is unix nanos; the bucket is the UTC calendar day.
+	rows, err := conn(ctx, r.db).QueryContext(ctx,
+		"SELECT strftime('%Y-%m-%d', created_at / 1000000000, 'unixepoch') AS day, COUNT(*) FROM jobs WHERE created_at >= ? GROUP BY day",
+		since.UTC().UnixNano())
+	if err != nil {
+		return nil, fmt.Errorf("job counts by day: %w", err)
+	}
+	defer func() { _ = rows.Close() }()
+	out := make(map[string]int)
+	for rows.Next() {
+		var day string
+		var count int
+		if err := rows.Scan(&day, &count); err != nil {
+			return nil, err
+		}
+		out[day] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) JobCountsByWorkload(ctx context.Context) (map[string]int, error) {
+	rows, err := conn(ctx, r.db).QueryContext(ctx, "SELECT workload, COUNT(*) FROM jobs GROUP BY workload")
+	if err != nil {
+		return nil, fmt.Errorf("job counts by workload: %w", err)
+	}
+	defer func() { _ = rows.Close() }()
+	out := make(map[string]int)
+	for rows.Next() {
+		var workload string
+		var count int
+		if err := rows.Scan(&workload, &count); err != nil {
+			return nil, err
+		}
+		out[workload] = count
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) TaskStats(ctx context.Context) (int64, int64, float64, error) {
+	var completed, failed int64
+	var avgNanos sql.NullFloat64
+	err := conn(ctx, r.db).QueryRowContext(ctx, `
+		SELECT
+			COALESCE(SUM(CASE WHEN status = 'completed' THEN 1 ELSE 0 END), 0),
+			COALESCE(SUM(CASE WHEN status = 'failed' THEN 1 ELSE 0 END), 0),
+			AVG(CASE WHEN status = 'completed' AND started_at IS NOT NULL THEN completed_at - started_at END)
+		FROM tasks`).Scan(&completed, &failed, &avgNanos)
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("task stats: %w", err)
+	}
+	return completed, failed, avgNanos.Float64 / 1e9, nil
+}
+
+func (r *AdminReadRepo) ArtifactSizeByKind(ctx context.Context) (map[string]int64, error) {
+	rows, err := conn(ctx, r.db).QueryContext(ctx, "SELECT kind, COALESCE(SUM(size_bytes), 0) FROM artifacts GROUP BY kind")
+	if err != nil {
+		return nil, fmt.Errorf("artifact sizes: %w", err)
+	}
+	defer func() { _ = rows.Close() }()
+	out := make(map[string]int64)
+	for rows.Next() {
+		var kind string
+		var size int64
+		if err := rows.Scan(&kind, &size); err != nil {
+			return nil, err
+		}
+		out[kind] = size
+	}
+	return out, rows.Err()
+}
+
+func (r *AdminReadRepo) DatabaseSizeBytes(ctx context.Context) (int64, error) {
+	var pageCount, pageSize int64
+	if err := conn(ctx, r.db).QueryRowContext(ctx, "PRAGMA page_count").Scan(&pageCount); err != nil {
+		return 0, fmt.Errorf("page count: %w", err)
+	}
+	if err := conn(ctx, r.db).QueryRowContext(ctx, "PRAGMA page_size").Scan(&pageSize); err != nil {
+		return 0, fmt.Errorf("page size: %w", err)
+	}
+	return pageCount * pageSize, nil
+}

coordinator/internal/storage/sqlite/admin_read_repo_test.go

@@ -0,0 +1,171 @@
+package sqlite
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/domain"
+)
+
+func TestAdminListJobsPaginatedAndCounts(t *testing.T) {
+	db := newTestDB(t)
+	ctx := context.Background()
+	jobRepo := NewJobRepo(db)
+	adminRepo := NewAdminReadRepo(db)
+
+	jobs := make([]*domain.Job, 5)
+	for i := range jobs {
+		jobs[i] = seedJob(t, db, 2)
+	}
+	// Two completed, two running, one pending.
+	if err := jobRepo.UpdateStatus(ctx, jobs[0].ID, domain.JobCompleted, nil); err != nil {
+		t.Fatal(err)
+	}
+	if err := jobRepo.UpdateStatus(ctx, jobs[1].ID, domain.JobCompleted, nil); err != nil {
+		t.Fatal(err)
+	}
+	if err := jobRepo.UpdateStatus(ctx, jobs[2].ID, domain.JobRunning, nil); err != nil {
+		t.Fatal(err)
+	}
+	if err := jobRepo.UpdateStatus(ctx, jobs[3].ID, domain.JobRunning, nil); err != nil {
+		t.Fatal(err)
+	}
+
+	all, total, err := adminRepo.ListJobsPaginated(ctx, "", 100, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if total != 5 || len(all) != 5 {
+		t.Errorf("all: total=%d len=%d, want 5/5", total, len(all))
+	}
+	completed, total, err := adminRepo.ListJobsPaginated(ctx, "completed", 100, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if total != 2 || len(completed) != 2 {
+		t.Errorf("completed: total=%d len=%d, want 2/2", total, len(completed))
+	}
+	page, total, err := adminRepo.ListJobsPaginated(ctx, "", 2, 2)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if total != 5 || len(page) != 2 {
+		t.Errorf("page: total=%d len=%d, want 5/2", total, len(page))
+	}
+
+	counts, err := adminRepo.CountJobsByStatus(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if counts["completed"] != 2 || counts["running"] != 2 || counts["pending"] != 1 {
+		t.Errorf("counts = %v, want completed=2 running=2 pending=1", counts)
+	}
+}
+
+func TestAdminTaskCountsByJobs(t *testing.T) {
+	db := newTestDB(t)
+	ctx := context.Background()
+	job := seedJob(t, db, 3)
+	if _, err := db.ExecContext(ctx, "UPDATE tasks SET status = 'completed', result_artifact_id = ? WHERE chunk_index = 0 AND job_id = ?", uuid.NewString(), job.ID.String()); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := db.ExecContext(ctx, "UPDATE tasks SET status = 'failed' WHERE chunk_index = 1 AND job_id = ?", job.ID.String()); err != nil {
+		t.Fatal(err)
+	}
+
+	counts, err := NewAdminReadRepo(db).TaskCountsByJobs(ctx, []uuid.UUID{job.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	got := counts[job.ID]
+	if got["completed"] != 1 || got["failed"] != 1 || got["pending"] != 1 {
+		t.Errorf("task counts = %v, want completed=1 failed=1 pending=1", got)
+	}
+}
+
+func TestAdminJobCountsByDay(t *testing.T) {
+	db := newTestDB(t)
+	ctx := context.Background()
+	job := seedJob(t, db, 1)
+	// Move the seed job to two days ago; create two more today.
+	old := fixedTime().Add(-48 * time.Hour)
+	if _, err := db.ExecContext(ctx, "UPDATE jobs SET created_at = ? WHERE id = ?", old.UnixNano(), job.ID.String()); err != nil {
+		t.Fatal(err)
+	}
+	seedJob(t, db, 1)
+	seedJob(t, db, 1)
+
+	repo := NewAdminReadRepo(db)
+	counts, err := repo.JobCountsByDay(ctx, fixedTime().Add(-6*24*time.Hour))
+	if err != nil {
+		t.Fatal(err)
+	}
+	today := fixedTime().UTC().Format("2006-01-02")
+	oldDay := old.UTC().Format("2006-01-02")
+	if counts[today] != 2 {
+		t.Errorf("today count = %d, want 2 (got %v)", counts[today], counts)
+	}
+	if counts[oldDay] != 1 {
+		t.Errorf("old day count = %d, want 1 (got %v)", counts[oldDay], counts)
+	}
+}
+
+func TestAdminTaskStatsAndStorage(t *testing.T) {
+	db := newTestDB(t)
+	ctx := context.Background()
+	repo := NewAdminReadRepo(db)
+
+	// One completed task with a known duration, one failed.
+	job := seedJob(t, db, 2)
+	start := fixedTime().Add(-2 * time.Minute)
+	done := fixedTime().Add(-90 * time.Second)
+	queries := []string{
+		"UPDATE tasks SET status='completed', result_artifact_id=?, started_at=?, completed_at=? WHERE job_id=? AND chunk_index=0",
+		"UPDATE tasks SET status='failed' WHERE job_id=? AND chunk_index=1",
+	}
+	for i, q := range queries {
+		args := []any{uuid.NewString(), start.UnixNano(), done.UnixNano(), job.ID.String()}
+		if i == 1 {
+			args = []any{job.ID.String()}
+		}
+		if _, err := db.ExecContext(ctx, q, args...); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	completed, failed, avg, err := repo.TaskStats(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if completed != 1 || failed != 1 {
+		t.Errorf("stats = completed %d failed %d, want 1/1", completed, failed)
+	}
+	if avg < 29 || avg > 31 {
+		t.Errorf("avg duration = %.1fs, want ~30s", avg)
+	}
+
+	// Artifact sizes by kind.
+	for _, kind := range []string{"input", "shard", "final_result"} {
+		if _, err := db.ExecContext(ctx, "INSERT INTO artifacts (id, job_id, kind, filename, storage_key, content_type, size_bytes, created_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+			uuid.NewString(), job.ID.String(), kind, kind+".csv", "key-"+kind, "text/csv", int64(len(kind)*1000), fixedTime().UnixNano()); err != nil {
+			t.Fatal(err)
+		}
+	}
+	sizes, err := repo.ArtifactSizeByKind(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if sizes["input"] != 5000 || sizes["shard"] != 5000 || sizes["final_result"] != 12000 {
+		t.Errorf("sizes = %v", sizes)
+	}
+	dbBytes, err := repo.DatabaseSizeBytes(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if dbBytes <= 0 {
+		t.Errorf("database size = %d, want > 0", dbBytes)
+	}
+}

coordinator/internal/storage/sqlite/migrations/0002_workload_settings.sql

@@ -0,0 +1,8 @@
+-- 0002: per-workload enable/disable. Absence of a row means "enabled" (the
+-- catalog default); a row only exists once an admin flipped a workload off or
+-- back on.
+CREATE TABLE IF NOT EXISTS workload_settings (
+    workload   TEXT NOT NULL PRIMARY KEY,
+    enabled    INTEGER NOT NULL CHECK (enabled IN (0, 1)),
+    updated_at INTEGER NOT NULL
+);

coordinator/internal/storage/sqlite/sqlite_test.go

@@ -69,8 +69,8 @@ func TestMigrateIsIdempotent(t *testing.T) {
 	if err := db.QueryRowContext(ctx, "PRAGMA user_version").Scan(&version); err != nil {
 		t.Fatal(err)
 	}
-	if version != 1 {
-		t.Errorf("user_version = %d, want 1", version)
+	if version != 2 {
+		t.Errorf("user_version = %d, want 2", version)
 	}
 }
 

coordinator/internal/storage/sqlite/worker_repo.go

@@ -90,3 +90,20 @@ func (r *WorkerRepo) MarkStaleOffline(ctx context.Context, cutoff time.Time) (in
 	}
 	return res.RowsAffected()
 }
+
+func (r *WorkerRepo) SetTrust(ctx context.Context, id uuid.UUID, trust domain.WorkerTrust) error {
+	res, err := conn(ctx, r.db).ExecContext(ctx,
+		"UPDATE workers SET trust_level = ?, updated_at = ? WHERE id = ?",
+		string(trust), encodeTime(time.Now()), id.String())
+	if err != nil {
+		return err
+	}
+	affected, err := res.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if affected == 0 {
+		return domain.ErrWorkerNotFound
+	}
+	return nil
+}

coordinator/internal/storage/sqlite/workload_settings_repo.go

@@ -0,0 +1,75 @@
+package sqlite
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"time"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/usecase"
+)
+
+// WorkloadSettingsRepo persists the per-workload enable/disable overrides.
+// Absence of a row means the workload is enabled (the catalog default).
+type WorkloadSettingsRepo struct{ db *sql.DB }
+
+func NewWorkloadSettingsRepo(db *sql.DB) *WorkloadSettingsRepo { return &WorkloadSettingsRepo{db: db} }
+
+var _ usecase.WorkloadSettingsRepository = (*WorkloadSettingsRepo)(nil)
+
+func (r *WorkloadSettingsRepo) GetEnabled(ctx context.Context, workload string) (bool, error) {
+	var enabled int
+	err := conn(ctx, r.db).QueryRowContext(ctx,
+		"SELECT enabled FROM workload_settings WHERE workload = ?", workload).Scan(&enabled)
+	if err == sql.ErrNoRows {
+		return true, nil // no override: catalog default enabled
+	}
+	if err != nil {
+		return false, fmt.Errorf("get workload setting: %w", err)
+	}
+	return enabled == 1, nil
+}
+
+func (r *WorkloadSettingsRepo) List(ctx context.Context) ([]usecase.WorkloadSetting, error) {
+	rows, err := conn(ctx, r.db).QueryContext(ctx,
+		"SELECT workload, enabled, updated_at FROM workload_settings ORDER BY workload ASC")
+	if err != nil {
+		return nil, fmt.Errorf("list workload settings: %w", err)
+	}
+	defer func() { _ = rows.Close() }()
+	var out []usecase.WorkloadSetting
+	for rows.Next() {
+		var (
+			name      string
+			enabled   int
+			updatedAt int64
+		)
+		if err := rows.Scan(&name, &enabled, &updatedAt); err != nil {
+			return nil, err
+		}
+		out = append(out, usecase.WorkloadSetting{
+			Workload:  name,
+			Enabled:   enabled == 1,
+			UpdatedAt: decodeTime(updatedAt),
+		})
+	}
+	return out, rows.Err()
+}
+
+func (r *WorkloadSettingsRepo) SetEnabled(ctx context.Context, workload string, enabled bool, now time.Time) error {
+	_, err := conn(ctx, r.db).ExecContext(ctx, `
+INSERT INTO workload_settings (workload, enabled, updated_at) VALUES (?, ?, ?)
+ON CONFLICT (workload) DO UPDATE SET enabled = excluded.enabled, updated_at = excluded.updated_at`,
+		workload, boolInt(enabled), now.UnixNano())
+	if err != nil {
+		return fmt.Errorf("set workload setting: %w", err)
+	}
+	return nil
+}
+
+func boolInt(b bool) int {
+	if b {
+		return 1
+	}
+	return 0
+}

coordinator/internal/transport/http/errors.go

@@ -42,7 +42,7 @@ func (s *Server) writeError(w http.ResponseWriter, r *http.Request, err error) {
 
 	status := http.StatusInternalServerError
 	switch {
-	case errors.Is(err, domain.ErrInvalidInput):
+	case errors.Is(err, domain.ErrInvalidInput), errors.Is(err, domain.ErrWorkloadDisabled):
 		status = http.StatusBadRequest
 	case errors.Is(err, domain.ErrJobNotFound), errors.Is(err, domain.ErrTaskNotFound),
 		errors.Is(err, domain.ErrWorkerNotFound), errors.Is(err, domain.ErrArtifactNotFound):

coordinator/internal/transport/http/server.go

@@ -35,6 +35,7 @@ type UseCases struct {
 	GetTaskInput     *usecase.GetTaskInput
 	Dashboard        *usecase.Dashboard
 	PreviewArtifact  *usecase.PreviewArtifact
+	Admin            *usecase.Admin
 }
 
 type Server struct {
@@ -177,6 +178,20 @@ func (s *Server) Handler(token string, uiToken ...string) http.Handler {
 			// Admin panel: session + admin role.
 			ui.Handle("GET /ui/admin", chain(http.HandlerFunc(s.handleUIAdmin), gate, requireAdmin))
 			ui.Handle("POST /ui/admin/user-action", chain(http.HandlerFunc(s.handleUIAdminUserAction), gate, requireAdmin))
+			// Admin console APIs: session + admin role, bounded read models.
+			ui.Handle("GET /ui/admin/api/system", chain(http.HandlerFunc(s.handleUIAdminSystemJSON), gate, requireAdmin))
+			ui.Handle("GET /ui/admin/api/jobs", chain(http.HandlerFunc(s.handleUIAdminJobsJSON), gate, requireAdmin))
+			ui.Handle("GET /ui/admin/api/metrics", chain(http.HandlerFunc(s.handleUIAdminMetricsJSON), gate, requireAdmin))
+			ui.Handle("GET /ui/admin/api/workers", chain(http.HandlerFunc(s.handleUIAdminWorkersJSON), gate, requireAdmin))
+			ui.Handle("POST /ui/admin/api/workers/{id}/trust", chain(http.HandlerFunc(s.handleUIAdminSetTrustJSON), gate, requireAdmin))
+			ui.Handle("GET /ui/admin/api/users", chain(http.HandlerFunc(s.handleUIAdminUsersJSON), gate, requireAdmin))
+			ui.Handle("POST /ui/admin/api/users/{id}/role", chain(http.HandlerFunc(s.handleUIAdminSetUserRoleJSON), gate, requireAdmin))
+			ui.Handle("GET /ui/admin/api/worker-keys", chain(http.HandlerFunc(s.handleUIAdminWorkerKeysJSON), gate, requireAdmin))
+			ui.Handle("POST /ui/admin/api/worker-keys/{id}/revoke", chain(http.HandlerFunc(s.handleUIAdminRevokeKeyJSON), gate, requireAdmin))
+			ui.Handle("GET /ui/admin/api/workloads", chain(http.HandlerFunc(s.handleUIAdminWorkloadsJSON), gate, requireAdmin))
+			ui.Handle("POST /ui/admin/api/workloads/{name}/enabled", chain(http.HandlerFunc(s.handleUIAdminSetWorkloadEnabledJSON), gate, requireAdmin))
+			ui.Handle("GET /ui/admin/api/settings", chain(http.HandlerFunc(s.handleUIAdminSettingsJSON), gate, requireAdmin))
+			ui.Handle("POST /ui/admin/api/token/reveal", chain(http.HandlerFunc(s.handleUIAdminRevealTokenJSON), gate, requireAdmin))
 		} else {
 			for _, rt := range app {
 				ui.HandleFunc(rt.pattern, rt.handler)

coordinator/internal/transport/http/server_test.go

@@ -39,6 +39,7 @@ func newEnvWithUIToken(t *testing.T, ready func(context.Context) error, configur
 	work := memstore.NewWorkerRepo()
 	arts := memstore.NewArtifactRepo()
 	blobs := memstore.NewBlobStore()
+	settings := memstoreSettings{}
 	clk := memstore.NewClock(time.Date(2026, 7, 21, 12, 0, 0, 0, time.UTC))
 	tx := memstore.Tx{}
 	lease := 2 * time.Minute
@@ -47,7 +48,7 @@ func newEnvWithUIToken(t *testing.T, ready func(context.Context) error, configur
 	uc := coordhttp.UseCases{
 		RegisterWorker:   usecase.NewRegisterWorker(work, clk),
 		CreateJob:        usecase.NewCreateJob(jobs, tasks, tx, clk),
-		SubmitDataset:    usecase.NewSubmitDataset(blobs, arts, jobs, tasks, tx, clk, 3, testCatalog()),
+		SubmitDataset:    usecase.NewSubmitDataset(blobs, arts, jobs, tasks, tx, clk, 3, testCatalog(), settings),
 		ClaimTask:        usecase.NewClaimTask(tasks, jobs, work, tx, clk, lease, testCatalog()),
 		RenewLease:       usecase.NewRenewLease(tasks, work, tx, clk, lease),
 		CompleteTask:     usecase.NewCompleteTask(tasks, jobs, arts, work, memstore.NewTaskResultRepo(), tx, clk, 2, testCatalog()),
@@ -739,3 +740,22 @@ func (e *env) uploadDataset(t *testing.T, workload string, rows int, tsv string)
 }
 
 func itoa(n int) string { return strconv.Itoa(n) }
+
+// memstoreSettings is an in-memory WorkloadSettingsRepository for tests.
+type memstoreSettings struct{ overrides map[string]bool }
+
+func (m memstoreSettings) GetEnabled(ctx context.Context, workload string) (bool, error) {
+	if enabled, ok := m.overrides[workload]; ok {
+		return enabled, nil
+	}
+	return true, nil
+}
+
+func (m memstoreSettings) List(ctx context.Context) ([]usecase.WorkloadSetting, error) {
+	return nil, nil
+}
+
+func (m memstoreSettings) SetEnabled(ctx context.Context, workload string, enabled bool, now time.Time) error {
+	m.overrides[workload] = enabled
+	return nil
+}

coordinator/internal/transport/http/templates/add-worker.html

@@ -29,8 +29,12 @@
         <h2>Set it up</h2>
         <ol>
           <li><strong>Create a key</strong><br>Use the form; copy the command it generates.</li>
-          <li><strong>Paste it in a terminal</strong><br>The command clones the project, sets up a Python environment, installs the worker, and starts it. The machine then appears under <a href="/ui">My machines</a>.</li>
+          <li><strong>Paste it in a terminal</strong><br>The command installs the worker, points it at this coordinator, and starts it. The machine then appears under <a href="/ui">My machines</a>.</li>
         </ol>
+        <h2 style="margin-top:24px">Single-binary mode?</h2>
+        <p>If the coordinator runs as <code>coordinator serve</code>, skip the key:
+        use the token in <code>~/.scimesh/worker.token</code> on the coordinator
+        machine as <code>WORKER_AUTH_TOKEN</code> instead.</p>
         <h2 style="margin-top:24px">Will my results count?</h2>
         <p>Your worker is <strong>untrusted</strong> by default: its results are cross-checked and accepted once a second independent worker computes the same answer (quorum), or once an admin marks your account <strong>verified</strong> — then your workers are trusted and results count immediately.</p>
         <p><span class="cap">similarity-search</span> and other SDK workloads from the library run on volunteer workers.</p>
@@ -43,8 +47,8 @@
     const keysBox=document.querySelector('#keys'),cmdBox=document.querySelector('#command'),form=document.querySelector('#create'),nameInput=document.querySelector('#key-name'),createBtn=document.querySelector('#create-btn'),error=document.querySelector('#error');
     const node=(tag,text,cls)=>{const n=document.createElement(tag);if(text!==undefined)n.textContent=text;if(cls)n.className=cls;return n};
     const shq=s=>"'"+String(s).replace(/'/g,"'\\''")+"'";
-    const buildCommand=(key,name)=>['git clone https://github.com/emil28092005/SciMesh.git','cd SciMesh','python -m venv .venv','source .venv/bin/activate','pip install -e .','','SCIMESH_COORDINATOR_URL='+coord+' \\','SCIMESH_USERSERVICE_URL='+(users||'<your userservice URL>')+' \\','SCIMESH_WORKER_KEY='+key+' \\','scimesh-worker --worker-name '+shq(name||'my-machine')].join('\n');
-    const showCommand=(key,name)=>{cmdBox.replaceChildren();cmdBox.append(node('strong','Key created — copy it now, it is shown only once.'));const pre=node('pre',buildCommand(key,name));cmdBox.append(pre);const copy=node('button','Copy command','button secondary');copy.type='button';copy.addEventListener('click',()=>{navigator.clipboard&&navigator.clipboard.writeText(buildCommand(key,name)).then(()=>{copy.textContent='Copied ✓'},()=>{copy.textContent='Press Ctrl+C to copy'})});cmdBox.append(document.createElement('br'),copy);if(!users){cmdBox.append(node('p','Set SCIMESH_USERSERVICE_URL to a userservice URL your machine can reach.','warn'))}cmdBox.classList.remove('hidden')};
+    const buildCommand=(key,name)=>['# install the worker binary (or download worker-agent from the release page)','curl -fsSL https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.sh | bash -s worker','','export COORDINATOR_URL='+coord,'export USERSERVICE_URL='+(users||'<your userservice URL>')+' \\','export WORKER_KEY='+key,'export WORKER_NAME='+shq(name||'my-machine'),'export WORK_DIR=~/scimesh-worker','worker-agent'].join('\n');
+    const showCommand=(key,name)=>{cmdBox.replaceChildren();cmdBox.append(node('strong','Key created — copy it now, it is shown only once.'));const pre=node('pre',buildCommand(key,name));cmdBox.append(pre);const copy=node('button','Copy command','button secondary');copy.type='button';copy.addEventListener('click',()=>{navigator.clipboard&&navigator.clipboard.writeText(buildCommand(key,name)).then(()=>{copy.textContent='Copied ✓'},()=>{copy.textContent='Press Ctrl+C to copy'})});cmdBox.append(document.createElement('br'),copy);if(!users){cmdBox.append(node('p','Set USERSERVICE_URL to a userservice URL your machine can reach, or skip it and run the worker with WORKER_AUTH_TOKEN instead of a key.','warn'))}cmdBox.classList.remove('hidden')};
     const revoke=async id=>{const r=await fetch('/ui/api/worker-keys/'+encodeURIComponent(id)+'/revoke',{method:'POST'});if(r.status===204||r.ok){loadKeys()}else{error.textContent='Could not revoke the key.'}};
     const renderKeys=keys=>{keysBox.replaceChildren();if(!keys.length){keysBox.append(node('div','No keys yet. Create one above to connect a machine.','empty'));return}for(const k of keys){const row=node('div',undefined,'key'),left=node('div');left.append(node('div',k.name||'unnamed','kn'),node('div',k.prefix+'…','kp'),node('div','Created '+new Date(k.created_at).toLocaleString()+(k.last_used_at?' · last used '+new Date(k.last_used_at).toLocaleString():' · never used'),'kd'));const btn=node('button','Revoke','revoke');btn.type='button';btn.addEventListener('click',()=>revoke(k.id));row.append(left,btn);keysBox.append(row)}};
     const loadKeys=async()=>{try{const r=await fetch('/ui/api/worker-keys',{headers:{Accept:'application/json'}});if(!r.ok)throw Error();const data=await r.json();renderKeys(data.worker_keys||[])}catch(_){keysBox.replaceChildren(node('div','Could not load your keys.','empty'))}};

coordinator/internal/transport/http/templates/admin.html

@@ -2,45 +2,534 @@
 <!doctype html>
 <html lang="en">
 <head>
-  <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Admin · SciMesh</title>
-  <style>
-    :root{color:#e5efff;background:#08111f;font:16px/1.5 Inter,ui-sans-serif,system-ui,sans-serif;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 10% -8%,#183f77 0,transparent 32rem),#08111f}.page{max-width:820px;margin:auto;padding:28px 22px 64px}a{color:#94bdff}.top{display:flex;justify-content:space-between;align-items:center;gap:12px}.eyebrow{margin:0;color:#7baaff;font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase}h1{margin:6px 0 0;color:#f4f8ff;font-size:clamp(1.8rem,4vw,2.6rem);letter-spacing:-.04em}.lead{max-width:640px;margin:10px 0 0;color:#aabed9}.card{margin-top:24px;border:1px solid #294662;border-radius:15px;background:#0d1a2cdd;box-shadow:0 20px 45px #00000021;padding:22px}.card h2{margin:0 0 4px;color:#f1f6ff;font-size:1.1rem}.card p{margin:0;color:#9fb3cf;font-size:.92rem}label{display:block;margin:16px 0 5px;color:#eaf2ff;font-weight:750}input{width:100%;border:1px solid #42617f;border-radius:9px;padding:10px 11px;background:#0a1626;color:#e5efff;font:inherit}input:focus{outline:2px solid #5d97f5;outline-offset:1px}.actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}.btn{border:0;border-radius:9px;padding:10px 14px;font:inherit;font-weight:800;cursor:pointer}.btn-primary{background:#67e3b8;color:#062018}.btn-muted{background:#23344d;color:#dce8ff}.notice{margin-top:16px;border-radius:10px;padding:11px 13px;font-weight:700}.ok{background:#123f34;color:#76efb5}.err{background:#552334;color:#ff9bad}.muted{color:#8ba2c2}.hint{margin-top:4px;color:#92a9c6;font-size:.85rem}</style>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>SciMesh · Coordinator Admin</title>
+<style>
+:root{--bg:#0b0e13;--panel:#11151d;--panel-2:#161c27;--border:#1f2634;--border-soft:#181f2b;--text:#e9ecf3;--text-2:#98a2b5;--text-3:#5d6879;--accent:#5b8cff;--accent-soft:#5b8cff1f;--accent-strong:#3f6fe0;--green:#3fce8a;--green-soft:#3fce8a1a;--amber:#e5b64f;--amber-soft:#e5b64f1a;--red:#f2647c;--red-soft:#f2647c1a;--mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,monospace;color-scheme:dark}
+*{box-sizing:border-box;margin:0;padding:0}
+body{background:var(--bg);color:var(--text);font:14px/1.55 Inter,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
+button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
+input,select{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:8px 11px;outline:none}
+input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
+code{font-family:var(--mono);font-size:.86em}
+a{color:var(--accent);text-decoration:none}
+.layout{display:flex;min-height:100vh}
+.sidebar{position:sticky;top:0;height:100vh;width:232px;flex:none;display:flex;flex-direction:column;background:var(--panel);border-right:1px solid var(--border-soft)}
+.brand{display:flex;align-items:center;gap:11px;padding:20px 20px 18px;border-bottom:1px solid var(--border-soft)}
+.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#5b8cff,#7c5cff);box-shadow:0 4px 14px #5b8cff40}
+.brand-mark svg{width:17px;height:17px;stroke:#fff}
+.brand-name{font-weight:700;font-size:14.5px;letter-spacing:-.01em}
+.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em}
+.nav{flex:1;overflow-y:auto;padding:14px 12px}
+.nav-label{margin:16px 10px 6px;font-size:10.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3)}
+.nav-label:first-child{margin-top:0}
+.nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:8px;color:var(--text-2);font-weight:500;text-align:left;transition:background .12s,color .12s}
+.nav-item svg{width:16px;height:16px;stroke:currentColor;flex:none}
+.nav-item:hover{background:var(--panel-2);color:var(--text)}
+.nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:600}
+.nav-item .count{margin-left:auto;font-size:11px;font-weight:600;color:var(--text-3);background:var(--panel-2);border-radius:99px;padding:1px 7px}
+.nav-item.active .count{color:var(--accent);background:#5b8cff26}
+.side-foot{padding:14px;border-top:1px solid var(--border-soft)}
+.user-chip{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;background:var(--panel-2)}
+.avatar{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#3fce8a,#2ea56c);color:#08130d;font-weight:800;font-size:12px;flex:none}
+.user-chip b{display:block;font-size:12.5px;line-height:1.25}
+.user-chip span{display:block;font-size:11px;color:var(--text-3)}
+.back-link{display:block;margin-top:9px;padding:7px 10px;color:var(--text-3);font-size:12.5px;text-decoration:none;border-radius:8px}
+.back-link:hover{color:var(--text);background:var(--panel-2)}
+.main{flex:1;min-width:0;display:flex;flex-direction:column}
+.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 32px;background:#0b0e13e6;backdrop-filter:blur(10px);border-bottom:1px solid var(--border-soft)}
+.topbar h1{font-size:17px;font-weight:700;letter-spacing:-.015em}
+.topbar p{font-size:12.5px;color:var(--text-3);margin-top:1px}
+.env-badge{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-2);border:1px solid var(--border);border-radius:99px;padding:5px 12px;background:var(--panel)}
+.env-badge i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
+.content{flex:1;padding:26px 32px 60px;max-width:1120px;width:100%;margin:0 auto}
+.page{display:none}.page.active{display:block;animation:fade .18s ease}
+@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1}}
+.card{background:var(--panel);border:1px solid var(--border-soft);border-radius:13px}
+.card-pad{padding:20px}
+.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 20px;border-bottom:1px solid var(--border-soft)}
+.card-head h3{font-size:13.5px;font-weight:650}
+.card-head span{font-size:12px;color:var(--text-3)}
+.grid-kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:14px}
+.kpi{background:var(--panel);border:1px solid var(--border-soft);border-radius:13px;padding:16px 18px}
+.kpi .k-label{display:flex;align-items:center;gap:7px;font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-3)}
+.kpi .k-value{margin-top:8px;font-size:26px;font-weight:700;letter-spacing:-.03em;line-height:1}
+.kpi .k-sub{margin-top:6px;font-size:12px;color:var(--text-2)}
+.pill{display:inline-flex;align-items:center;gap:6px;border-radius:99px;padding:3px 10px;font-size:11.5px;font-weight:650;white-space:nowrap}
+.pill i{width:6px;height:6px;border-radius:50%;background:currentColor}
+.pill-success{background:var(--green-soft);color:var(--green)}
+.pill-active{background:var(--accent-soft);color:var(--accent)}
+.pill-waiting{background:#ffffff12;color:var(--text-2)}
+.pill-danger{background:var(--red-soft);color:var(--red)}
+.pill-amber{background:var(--amber-soft);color:var(--amber)}
+.btn{display:inline-flex;align-items:center;gap:7px;border-radius:8px;padding:8px 14px;font-weight:600;font-size:13px;border:1px solid transparent;transition:filter .12s,background .12s}
+.btn svg{width:14px;height:14px;stroke:currentColor}
+.btn-primary{background:var(--accent);color:#0a1222}
+.btn-ghost{background:var(--panel-2);border-color:var(--border);color:var(--text-2)}
+.btn-ghost:hover{color:var(--text);border-color:#2a3446}
+.btn-danger{background:var(--red-soft);color:var(--red)}
+.btn-sm{padding:5px 10px;font-size:12px;border-radius:7px}
+table{width:100%;border-collapse:collapse}
+th{padding:10px 20px;text-align:left;font-size:11px;font-weight:650;letter-spacing:.07em;text-transform:uppercase;color:var(--text-3);border-bottom:1px solid var(--border-soft)}
+td{padding:12px 20px;border-bottom:1px solid var(--border-soft);vertical-align:middle}
+tr:last-child td{border-bottom:0}
+tbody tr{transition:background .1s}
+tbody tr:hover{background:var(--panel-2)}
+.t-main{font-weight:600;font-size:13.5px}
+.t-sub{font-size:11.5px;color:var(--text-3);font-family:var(--mono)}
+.bar{height:5px;width:130px;border-radius:99px;background:#ffffff10;overflow:hidden}
+.bar span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#5b8cff,#3fce8a)}
+.bar-label{font-size:11.5px;color:var(--text-2);font-family:var(--mono);margin-top:5px}
+.tabs{display:flex;gap:4px;padding:4px;background:var(--panel);border:1px solid var(--border-soft);border-radius:10px;width:max-content;margin-bottom:14px;flex-wrap:wrap}
+.tab{padding:6px 13px;border-radius:7px;font-size:12.5px;font-weight:600;color:var(--text-2)}
+.tab:hover{color:var(--text)}
+.tab.active{background:var(--panel-2);color:var(--text);box-shadow:inset 0 0 0 1px var(--border)}
+.tab .n{color:var(--text-3);font-weight:500;margin-left:5px}
+.tab.active .n{color:var(--accent)}
+.section-title{margin:26px 0 12px;font-size:13px;font-weight:700;letter-spacing:-.01em;color:var(--text)}
+.section-title:first-child{margin-top:0}
+.section-note{font-size:12px;color:var(--text-3);margin:-8px 0 12px}
+.kv{display:grid;grid-template-columns:210px 1fr;row-gap:0}
+.kv dt{padding:11px 20px;font-size:12.5px;color:var(--text-3);border-bottom:1px solid var(--border-soft)}
+.kv dd{padding:11px 20px;font-size:13px;border-bottom:1px solid var(--border-soft)}
+.kv dt:last-of-type,.kv dd:last-of-type{border-bottom:0}
+.stack{display:grid;gap:14px}
+.split{display:grid;grid-template-columns:1fr 1fr;gap:14px}
+.storage-bar{display:flex;height:10px;border-radius:99px;overflow:hidden;margin:14px 20px 6px}
+.storage-bar div{height:100%}
+.legend{display:flex;gap:20px;padding:10px 20px 18px;flex-wrap:wrap}
+.legend span{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--text-2)}
+.legend i{width:9px;height:9px;border-radius:3px}
+.footer-row{display:flex;align-items:center;justify-content:space-between;padding:11px 20px;font-size:12px;color:var(--text-3)}
+.pager{display:flex;gap:4px}
+.pager button{width:26px;height:26px;border-radius:7px;font-size:12px;color:var(--text-2)}
+.pager button.cur{background:var(--accent-soft);color:var(--accent);font-weight:700}
+.pager button:disabled{opacity:.35;cursor:default}
+.chart{width:100%;height:auto;display:block}
+.chart-bar{fill:#2c3a52;rx:4}
+.chart-bar.hot{fill:var(--accent)}
+.chart-grid{stroke:#ffffff08}
+.chart-label{font:10px var(--mono);fill:var(--text-3)}
+.placeholder{border:1px dashed #2c3a52;border-radius:13px;padding:34px 24px;text-align:center;color:var(--text-2)}
+.placeholder b{display:block;color:var(--text);margin-bottom:6px}
+.empty{padding:26px;text-align:center;color:var(--text-3);font-size:13px}
+.sec-label{font-size:11px;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:var(--text-3);margin:14px 20px 6px}
+.sec-label:first-child{margin-top:18px}
+.field-row{display:flex;gap:10px;align-items:center;margin-bottom:10px}
+.field-row label{font-size:12px;color:var(--text-2);width:200px;flex:none}
+@media(max-width:960px){.sidebar{display:none}.grid-kpi,.split{grid-template-columns:1fr 1fr}}
+</style>
 </head>
 <body>
-  <main class="page">
-    <header class="top">
-      <div><p class="eyebrow">Admin panel</p><h1>User &amp; run control</h1></div>
-      <div style="display:flex;gap:10px;align-items:center"><a href="/ui">← Dashboard</a><a href="/ui/profile">Profile</a><form method="post" action="/ui/logout" style="margin:0"><button class="btn btn-muted" type="submit">Log out</button></form></div>
-    </header>
-    <p class="lead">Signed in as <strong>{{.Role}}</strong>. Promote or verify a user by their id, and control every job from the dashboard.</p>
+<div class="layout">
 
-    {{if .Msg}}<div class="notice ok">{{.Msg}}</div>{{end}}
-    {{if .Error}}<div class="notice err">{{.Error}}</div>{{end}}
+<aside class="sidebar">
+  <div class="brand">
+    <div class="brand-mark"><svg viewBox="0 0 24 24" fill="none" stroke-width="2" stroke-linecap="round"><circle cx="6" cy="6" r="2.4"/><circle cx="18" cy="7" r="2.4"/><circle cx="12" cy="17" r="2.4"/><path d="M8 7.5l7.6-1M7 8.3l3.7 6.5M16.6 9.2l-3.2 5.6"/></svg></div>
+    <div><div class="brand-name">SciMesh</div><div class="brand-sub">Coordinator Admin</div></div>
+  </div>
+  <nav class="nav" id="nav">
+    <div class="nav-label">Operate</div>
+    <button class="nav-item active" data-page="system"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><rect x="3" y="3" width="8" height="8" rx="2"/><rect x="13" y="3" width="8" height="5" rx="2"/><rect x="13" y="10" width="8" height="11" rx="2"/><rect x="3" y="13" width="8" height="8" rx="2"/></svg>System</button>
+    <button class="nav-item" data-page="jobs"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><path d="M4 6h16M4 12h16M4 18h10"/></svg>Jobs</button>
+    <button class="nav-item" data-page="workers"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><rect x="3" y="4" width="18" height="12" rx="2"/><path d="M8 20h8M12 16v4"/></svg>Workers</button>
+    <div class="nav-label">Access</div>
+    <button class="nav-item" data-page="users"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><circle cx="9" cy="8" r="3.2"/><path d="M3.5 19c.7-3 2.9-4.5 5.5-4.5s4.8 1.5 5.5 4.5"/><circle cx="17" cy="9" r="2.4"/><path d="M15.5 14.6c2.6.2 4.3 1.7 5 4.4"/></svg>Users &amp; keys</button>
+    <div class="nav-label">Platform</div>
+    <button class="nav-item" data-page="workloads"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><path d="M12 3l8 4.5v9L12 21l-8-4.5v-9L12 3z"/><path d="M12 12l8-4.5M12 12v9M12 12L4 7.5"/></svg>Workloads</button>
+    <button class="nav-item" data-page="metrics"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><path d="M4 19V5M4 19h16"/><path d="M8 15v-4M12 15V7M16 15v-6M20 15V9"/></svg>Metrics</button>
+    <button class="nav-item" data-page="settings"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><circle cx="12" cy="12" r="3"/><path d="M19 12a7 7 0 0 0-.1-1.2l2-1.6-2-3.4-2.4 1a7 7 0 0 0-2-1.2L14 3h-4l-.5 2.6a7 7 0 0 0-2 1.2l-2.4-1-2 3.4 2 1.6A7 7 0 0 0 5 12c0 .4 0 .8.1 1.2l-2 1.6 2 3.4 2.4-1a7 7 0 0 0 2 1.2L10 21h4l.5-2.6a7 7 0 0 0 2-1.2l2.4 1 2-3.4-2-1.6c.1-.4.1-.8.1-1.2z"/></svg>Settings</button>
+  </nav>
+  <div class="side-foot">
+    <div class="user-chip"><div class="avatar">{{.Role}}</div><div><b>Signed in as {{.Role}}</b><span>cluster administrator</span></div></div>
+    <a class="back-link" href="/ui">← Back to control room</a>
+  </div>
+</aside>
 
-    <section class="card">
-      <h2>Manage a user</h2>
-      <p>Paste the user id (the JWT <code>sub</code> / the value shown at registration). Actions are applied immediately.</p>
-      <form method="post" action="/ui/admin/user-action">
-        <label for="user_id">User id</label>
-        <input id="user_id" name="user_id" placeholder="00000000-0000-0000-0000-000000000000" autocomplete="off" required>
-        <p class="hint">Promote makes them an admin; Verify marks them a trusted contributor (their workers skip quorum).</p>
-        <div class="actions">
-          <button class="btn btn-primary" name="action" value="promote" type="submit">Make admin</button>
-          <button class="btn btn-muted" name="action" value="demote" type="submit">Remove admin</button>
-          <button class="btn btn-primary" name="action" value="verify" type="submit">Verify</button>
-          <button class="btn btn-muted" name="action" value="unverify" type="submit">Unverify</button>
+<div class="main">
+  <header class="topbar">
+    <div><h1 id="page-title">System</h1><p id="page-sub">Cluster state and node information</p></div>
+    <div class="env-badge"><i></i><span id="env-label">admin console</span></div>
+  </header>
+  <div class="content">
+
+  <!-- ═══ SYSTEM ═══ -->
+  <section class="page active" id="page-system">
+    <div class="grid-kpi">
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M12 3l8 4.5v9L12 21l-8-4.5v-9L12 3z"/></svg>Version</div><div class="k-value" id="k-version">—</div><div class="k-sub" id="k-version-sub">loading…</div></div>
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><circle cx="12" cy="12" r="9"/><path d="M12 7v5l3 3"/></svg>Uptime</div><div class="k-value" id="k-uptime">—</div><div class="k-sub" id="k-started">loading…</div></div>
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M4 6h16M4 12h16M4 18h10"/></svg>Active jobs</div><div class="k-value" id="k-active">—</div><div class="k-sub" id="k-active-sub">loading…</div></div>
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><rect x="3" y="4" width="18" height="12" rx="2"/><path d="M8 20h8"/></svg>Workers online</div><div class="k-value" id="k-workers">—</div><div class="k-sub" id="k-workers-sub">loading…</div></div>
+    </div>
+    <div class="split">
+      <div class="card">
+        <div class="card-head"><h3>Storage usage</h3><span id="storage-total">—</span></div>
+        <div class="storage-bar" id="storage-bar"><div style="width:0;background:#5b8cff"></div><div style="width:0;background:#7c5cff"></div><div style="width:0;background:#3fce8a"></div></div>
+        <div class="legend">
+          <span><i style="background:#5b8cff"></i>Datasets · <b id="storage-datasets">—</b></span>
+          <span><i style="background:#7c5cff"></i>Artifacts · <b id="storage-artifacts">—</b></span>
+          <span><i style="background:#3fce8a"></i>Database · <b id="storage-db">—</b></span>
         </div>
-      </form>
-    </section>
+      </div>
+      <div class="card">
+        <div class="card-head"><h3>Health</h3><span id="health-state">—</span></div>
+        <dl class="kv">
+          <dt>Database</dt><dd id="h-db">—</dd>
+          <dt>Userservice</dt><dd id="h-users">—</dd>
+          <dt>Reducer</dt><dd id="h-reducer">—</dd>
+        </dl>
+      </div>
+    </div>
+    <div class="section-title">Node information</div>
+    <div class="card">
+      <dl class="kv">
+        <dt>Binary</dt><dd><code id="n-binary">—</code></dd>
+        <dt>Listen address</dt><dd><code id="n-addr">—</code></dd>
+        <dt>Data directory</dt><dd><code id="n-datadir">—</code></dd>
+        <dt>Database engine</dt><dd id="n-engine">—</dd>
+        <dt>Public URL</dt><dd><code id="n-public">—</code></dd>
+      </dl>
+    </div>
+  </section>
 
-    <section class="card">
-      <h2>Jobs &amp; tasks</h2>
-      <p>As an admin you already see <strong>every user's jobs</strong> on the dashboard, with per-task status and job cancellation. A regular user sees only their own.</p>
-      <div class="actions"><a class="btn btn-muted" href="/ui" style="text-decoration:none">Open the dashboard →</a></div>
-    </section>
-  </main>
+  <!-- ═══ JOBS ═══ -->
+  <section class="page" id="page-jobs">
+    <div class="tabs" id="job-tabs"></div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Job</th><th>Workload</th><th>Owner</th><th>Status</th><th>Progress</th><th>Submitted</th></tr></thead>
+        <tbody id="job-rows"></tbody>
+      </table>
+      <div class="footer-row"><span id="job-range">—</span><div class="pager"><button id="pg-prev" aria-label="previous">‹</button><button id="pg-next" aria-label="next">›</button></div></div>
+    </div>
+  </section>
+
+  <!-- ═══ WORKERS ═══ -->
+  <section class="page" id="page-workers">
+    <div class="section-note">Workers register themselves. Trust decides whether a machine's results are accepted directly or need quorum.</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Worker</th><th>Status</th><th>Capabilities</th><th>Trust</th><th>Owner</th><th>Last signal</th></tr></thead>
+        <tbody id="worker-rows"></tbody>
+      </table>
+    </div>
+  </section>
+
+  <!-- ═══ USERS & KEYS ═══ -->
+  <section class="page" id="page-users">
+    <div class="section-title">Users</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Email</th><th>Role</th><th>Verified</th><th>Created</th></tr></thead>
+        <tbody id="user-rows"></tbody>
+      </table>
+      <div class="footer-row"><span id="user-count">—</span></div>
+    </div>
+    <div class="section-title">Worker keys</div>
+    <div class="section-note">Keys let lab machines register as workers under a user account. Served instances can also use the cluster token.</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Label</th><th>Prefix</th><th>Owner</th><th>Created</th><th>Last used</th><th></th></tr></thead>
+        <tbody id="key-rows"></tbody>
+      </table>
+    </div>
+    <div class="section-title">Quick user action</div>
+    <div class="card">
+      <form method="post" action="/ui/admin/user-action" style="padding:16px 20px">
+        <div class="field-row"><label for="user_id">User id</label><input id="user_id" name="user_id" placeholder="00000000-0000-0000-0000-000000000000" autocomplete="off" required style="flex:1"></div>
+        <div style="display:flex;gap:8px;margin-left:210px;flex-wrap:wrap">
+          <button class="btn btn-primary" name="action" value="promote" type="submit">Make admin</button>
+          <button class="btn btn-ghost" name="action" value="demote" type="submit">Remove admin</button>
+          <button class="btn btn-primary" name="action" value="verify" type="submit">Verify</button>
+          <button class="btn btn-ghost" name="action" value="unverify" type="submit">Unverify</button>
+        </div>
+        {{if .Msg}}<div style="margin-left:210px;margin-top:10px;color:var(--green);font-size:13px">✓ {{.Msg}}</div>{{end}}
+        {{if .Error}}<div style="margin-left:210px;margin-top:10px;color:var(--red);font-size:13px">✗ {{.Error}}</div>{{end}}
+      </form>
+    </div>
+  </section>
+
+  <!-- ═══ WORKLOADS ═══ -->
+  <section class="page" id="page-workloads">
+    <div class="section-note">Disabled workloads are rejected at submit time and hidden from the job form. Settings persist in the database.</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Workload</th><th>Reduction</th><th>Parameters</th><th>Dataset upload</th><th>Enabled</th></tr></thead>
+        <tbody id="workload-rows"></tbody>
+      </table>
+    </div>
+  </section>
+
+  <!-- ═══ METRICS ═══ -->
+  <section class="page" id="page-metrics">
+    <div class="grid-kpi">
+      <div class="kpi"><div class="k-label">Jobs · 7 days</div><div class="k-value" id="m-jobs7">—</div><div class="k-sub">created in the last week</div></div>
+      <div class="kpi"><div class="k-label">Shards completed</div><div class="k-value" id="m-shards">—</div><div class="k-sub" id="m-shards-sub">across all workers</div></div>
+      <div class="kpi"><div class="k-label">Avg shard time</div><div class="k-value" id="m-avg">—</div><div class="k-sub">completed shards only</div></div>
+      <div class="kpi"><div class="k-label">Failure rate</div><div class="k-value" id="m-failrate">—</div><div class="k-sub" id="m-failrate-sub">—</div></div>
+    </div>
+    <div class="split">
+      <div class="card">
+        <div class="card-head"><h3>Jobs per day</h3><span>last 7 days</span></div>
+        <div style="padding:16px 20px 10px" id="chart-days"></div>
+      </div>
+      <div class="card">
+        <div class="card-head"><h3>Jobs by workload</h3><span>all time</span></div>
+        <dl class="kv" id="chart-workloads"></dl>
+      </div>
+    </div>
+  </section>
+
+  <!-- ═══ SETTINGS ═══ -->
+  <section class="page" id="page-settings">
+    <div class="warn-strip" style="display:flex;gap:10px;align-items:flex-start;background:var(--amber-soft);border:1px solid #e5b64f33;border-radius:10px;padding:12px 14px;font-size:12.5px;color:#eecf8d"><span>The cluster token below authenticates <b>any</b> worker. Reveal it only on a trusted machine.</span></div>
+    <div class="section-title">Cluster</div>
+    <div class="card">
+      <dl class="kv">
+        <dt>Worker token</dt><dd><div class="secret"><code id="tok">••••••••••••••••••••••••</code><button class="btn btn-ghost btn-sm" id="reveal">Reveal</button></div></dd>
+        <dt>Public URL</dt><dd><code id="s-public">—</code></dd>
+        <dt>Listen address</dt><dd><code id="s-addr">—</code></dd>
+        <dt>Data directory</dt><dd><code id="s-datadir">—</code></dd>
+        <dt>Database engine</dt><dd id="s-engine">—</dd>
+        <dt>Binary</dt><dd><code id="s-binary">—</code></dd>
+      </dl>
+    </div>
+  </section>
+
+  </div>
+</div>
+</div>
+
+<script>
+const titles={system:['System','Cluster state and node information'],jobs:['Jobs','Every computation, filterable and paginated'],workers:['Workers','Fleet overview and trust management'],users:['Users & keys','Accounts, roles and worker keys'],workloads:['Workloads','Catalog entries and availability'],metrics:['Metrics','Throughput and reliability, last 7 days'],settings:['Settings','Cluster, storage and security']};
+const statusLabel={pending:'Waiting',leased:'Assigned',running:'Running',reducing:'Merging',completed:'Completed',failed:'Failed',cancelled:'Cancelled'};
+const statusClass={pending:'pill-waiting',leased:'pill-active',running:'pill-active',reducing:'pill-active',completed:'pill-success',failed:'pill-danger',cancelled:'pill-waiting'};
+const fmtBytes=b=>{if(b==null||b<0)return '—';if(b<1024)return b+' B';if(b<1048576)return (b/1024).toFixed(1)+' KB';if(b<1073741824)return (b/1048576).toFixed(1)+' MB';return (b/1073741824).toFixed(2)+' GB'};
+const fmtTime=t=>t?new Date(t).toLocaleString():'—';
+const esc=s=>String(s).replace(/[&<>"]/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;'}[c]));
+let timer=null,current={page:'system',jobsStatus:'',jobsPage:1};
+const setPage=page=>{current.page=page;document.querySelectorAll('.nav-item').forEach(b=>b.classList.toggle('active',b.dataset.page===page));document.querySelectorAll('.page').forEach(p=>p.classList.toggle('active',p.id==='page-'+page));const [t,s]=titles[page];document.getElementById('page-title').textContent=t;document.getElementById('page-sub').textContent=s;if(timer){clearInterval(timer);timer=null}refresh();timer=setInterval(refresh,5000)};
+document.querySelectorAll('.nav-item').forEach(b=>b.addEventListener('click',()=>setPage(b.dataset.page)));
+
+const refresh=()=>{if(document.hidden)return;const p=current.page;if(p==='system')loadSystem();else if(p==='jobs')loadJobs();else if(p==='metrics')loadMetrics();else if(p==='workers')loadWorkers();else if(p==='users')loadUsers();else if(p==='workloads')loadWorkloads();else if(p==='settings')loadSettings()};
+document.addEventListener('visibilitychange',()=>{if(!document.hidden)refresh()});
+
+async function loadSystem(){
+  const r=await fetch('/ui/admin/api/system',{headers:{Accept:'application/json'}});
+  if(!r.ok)return;
+  const v=await r.json();
+  document.getElementById('k-version').textContent=v.version;
+  document.getElementById('k-version-sub').textContent=v.node.db_engine+' · '+navigator.platform;
+  const secs=v.uptime_seconds;
+  const uptime=secs<3600?(secs/60).toFixed(0)+' min':secs<86400?(secs/3600).toFixed(1)+' h':(secs/86400).toFixed(1)+' d';
+  document.getElementById('k-uptime').textContent=uptime;
+  document.getElementById('k-started').textContent='since '+fmtTime(v.started_at);
+  document.getElementById('k-active').textContent=v.active_jobs;
+  document.getElementById('k-active-sub').textContent=v.running_jobs+' running · '+v.waiting_jobs+' waiting';
+  document.getElementById('k-workers').textContent=v.workers_online;
+  document.getElementById('k-workers-sub').textContent=(v.workers_total-v.workers_online)+' offline · '+v.workers_busy+' busy';
+  const total=v.storage.datasets_bytes+v.storage.artifacts_bytes+v.storage.database_bytes;
+  document.getElementById('storage-total').textContent=fmtBytes(total);
+  const pct=b=>total?Math.round(b*100/total)+'%':'0%';
+  document.getElementById('storage-bar').children[0].style.width=pct(v.storage.datasets_bytes);
+  document.getElementById('storage-bar').children[1].style.width=pct(v.storage.artifacts_bytes);
+  document.getElementById('storage-bar').children[2].style.width=pct(v.storage.database_bytes);
+  document.getElementById('storage-datasets').textContent=fmtBytes(v.storage.datasets_bytes);
+  document.getElementById('storage-artifacts').textContent=fmtBytes(v.storage.artifacts_bytes);
+  document.getElementById('storage-db').textContent=fmtBytes(v.storage.database_bytes);
+  document.getElementById('h-db').innerHTML=pill(v.health.database==='connected'?'Connected':'Error','pill-success',v.health.database==='connected'?'pill-danger':null);
+  document.getElementById('h-users').innerHTML=pill(cap(v.health.userservice),'pill-success',null);
+  document.getElementById('h-reducer').innerHTML=pill(cap(v.health.reducer),'pill-waiting',null);
+  document.getElementById('health-state').textContent=v.health.database==='connected'?'all checks pass':'database unreachable';
+  document.getElementById('n-binary').textContent=v.node.binary||'—';
+  document.getElementById('n-addr').textContent=v.node.addr;
+  document.getElementById('n-datadir').textContent=v.node.data_dir||'—';
+  document.getElementById('n-engine').textContent=v.node.db_engine;
+  document.getElementById('n-public').textContent=v.node.public_url||'—';
+  document.getElementById('env-label').textContent=(v.node.public_url||'').replace(/^https?:\/\//,'')+' · '+v.node.db_engine+' · '+v.node.addr;
+}
+const cap=s=>s?s.charAt(0).toUpperCase()+s.slice(1):'—';
+const pill=(text,cls,fail)=>{const c=fail||cls;return '<span class="pill '+c+'"><i></i>'+esc(text)+'</span>'};
+
+let jobFilter={};
+async function loadJobs(){
+  const page=current.jobsPage,status=current.jobsStatus;
+  const r=await fetch('/ui/admin/api/jobs?page='+page+'&per_page=10'+(status?'&status='+status:''),{headers:{Accept:'application/json'}});
+  if(!r.ok)return;
+  const v=await r.json();
+  const tabs=document.getElementById('job-tabs');
+  const defs=[['', 'All'],['running','Running'],['pending','Waiting'],['completed','Completed'],['failed','Failed'],['cancelled','Cancelled']];
+  tabs.replaceChildren();
+  for(const [key,label] of defs){
+    const n=v.counts[key]||0;
+    const b=document.createElement('button');
+    b.className='tab'+(key===status?' active':'');
+    b.innerHTML=label+'<span class="n">'+n+'</span>';
+    b.addEventListener('click',()=>{current.jobsStatus=key;current.jobsPage=1;loadJobs()});
+    tabs.append(b);
+  }
+  const rows=document.getElementById('job-rows');
+  rows.replaceChildren();
+  if(!v.jobs.length){const tr=document.createElement('tr');tr.innerHTML='<td colspan="6"><div class="empty">No jobs'+(status?' with this status':'')+'.</div></td>';rows.append(tr)}
+  for(const j of v.jobs){
+    const tr=document.createElement('tr');
+    const pct=j.total?Math.min(100,Math.round((j.completed+j.failed)*100/j.total)):0;
+    tr.innerHTML='<td><div class="t-main">'+esc(j.workload)+'</div><div class="t-sub">'+esc(j.id.slice(0,8))+'…</div></td>'+
+      '<td><code style="color:var(--text-2)">'+esc(j.workload)+'</code></td>'+
+      '<td style="color:var(--text-2)">'+esc(j.owner)+'</td>'+
+      '<td>'+pill(statusLabel[j.status]||j.status,statusClass[j.status]||'pill-waiting',null)+'</td>'+
+      '<td><div class="bar"><span style="width:'+pct+'%"></span></div><div class="bar-label">'+j.completed+' / '+j.total+' shards'+(j.failed?' · '+j.failed+' failed':'')+'</div></td>'+
+      '<td style="color:var(--text-2);font-size:12.5px">'+fmtTime(j.created_at)+'</td>';
+    rows.append(tr);
+  }
+  const from=(v.page-1)*v.per_page+1,to=Math.min(v.page*v.per_page,v.total);
+  document.getElementById('job-range').textContent=v.total?(from+'–'+to+' of '+v.total+' jobs'):'no jobs';
+  const prev=document.getElementById('pg-prev'),next=document.getElementById('pg-next');
+  prev.disabled=v.page<=1;next.disabled=v.page*v.per_page>=v.total;
+  prev.onclick=()=>{current.jobsPage--;loadJobs()};
+  next.onclick=()=>{current.jobsPage++;loadJobs()};
+}
+
+function dayChart(days){
+  const max=Math.max(1,...days.map(d=>d.count));
+  const w=460,h=150,bw=44,gap=18,base=118;
+  let bars='';
+  days.forEach((d,i)=>{const x=12+i*(bw+gap),bh=Math.round(d.count*base/max);bars+='<rect class="chart-bar'+(d.count===max&&d.count>0?' hot':'')+'" x="'+x+'" y="'+(base-bh+6)+'" width="'+bw+'" height="'+bh+'"/>';bars+='<text class="chart-label" x="'+x+'" y="146">'+d.day.slice(5)+'</text>'});
+  return '<svg class="chart" viewBox="0 0 '+w+' '+h+'"><line class="chart-grid" x1="0" y1="30" x2="'+w+'" y2="30"/><line class="chart-grid" x1="0" y1="60" x2="'+w+'" y2="60"/><line class="chart-grid" x1="0" y1="90" x2="'+w+'" y2="90"/>'+bars+'</svg>';
+}
+async function loadMetrics(){
+  const r=await fetch('/ui/admin/api/metrics',{headers:{Accept:'application/json'}});
+  if(!r.ok)return;
+  const v=await r.json();
+  document.getElementById('m-jobs7').textContent=v.jobs_last_7_days;
+  document.getElementById('m-shards').textContent=v.shards_completed.toLocaleString();
+  document.getElementById('m-shards-sub').textContent=(v.shards_completed+v.shards_failed)+' shards · '+v.shards_failed+' failed';
+  document.getElementById('m-avg').textContent=v.avg_shard_seconds?v.avg_shard_seconds.toFixed(1)+'s':'—';
+  document.getElementById('m-failrate').textContent=(v.failure_rate*100).toFixed(1)+'%';
+  document.getElementById('m-failrate-sub').textContent=v.shards_failed+' of '+(v.shards_completed+v.shards_failed)+' shards failed';
+  document.getElementById('chart-days').innerHTML=dayChart(v.jobs_by_day);
+  const wl=document.getElementById('chart-workloads');
+  wl.replaceChildren();
+  if(!v.jobs_by_workload.length){const p=document.createElement('p');p.className='empty';p.textContent='No workloads used yet.';wl.append(p)}
+  const max=Math.max(1,...v.jobs_by_workload.map(w=>w.count));
+  for(const w of v.jobs_by_workload){
+    const dt=document.createElement('dt');dt.textContent=w.workload;
+    const dd=document.createElement('dd');
+    dd.innerHTML='<div class="bar" style="width:100%"><span style="width:'+Math.round(w.count*100/max)+'%"></span></div>';
+    wl.append(dt,dd);
+  }
+}
+setPage('system');
+
+const workerStatusPill=s=>({online:['Online','pill-success'],busy:['Busy','pill-active'],offline:['Offline','pill-waiting']}[s]||[s,'pill-waiting']);
+async function loadWorkers(){
+  const r=await fetch('/ui/admin/api/workers',{headers:{Accept:'application/json'}});
+  if(!r.ok)return;
+  const v=await r.json();
+  const rows=document.getElementById('worker-rows');
+  rows.replaceChildren();
+  if(!v.workers.length){const tr=document.createElement('tr');tr.innerHTML='<td colspan="6"><div class="empty">No worker is registered yet.</div></td>';rows.append(tr);return}
+  for(const w of v.workers){
+    const tr=document.createElement('tr');
+    const [label,cls]=workerStatusPill(w.status);
+    const trustSel='<select data-id="'+w.id+'" class="trust-sel" '+(w.status==='offline'?'disabled':'')+'><option value="trusted" '+(w.trust==='trusted'?'selected':'')+'>Trusted</option><option value="untrusted" '+(w.trust==='untrusted'?'selected':'')+'>Untrusted</option></select>';
+    tr.innerHTML='<td><div class="t-main">'+esc(w.name)+'</div><div class="t-sub">'+esc(w.id.slice(0,8))+'…</div></td>'+
+      '<td>'+pill(label,cls,null)+'</td>'+
+      '<td>'+(w.capabilities||[]).map(c=>'<span class="cap">'+esc(c)+'</span>').join('')+'</td>'+
+      '<td>'+trustSel+'</td>'+
+      '<td style="color:var(--text-2)">'+esc(w.owner)+'</td>'+
+      '<td style="color:var(--text-2);font-size:12.5px">'+fmtTime(w.last_heartbeat_at)+'</td>';
+    rows.append(tr);
+  }
+  document.querySelectorAll('.trust-sel').forEach(sel=>sel.addEventListener('change',async()=>{
+    await fetch('/ui/admin/api/workers/'+sel.dataset.id+'/trust',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({trusted:sel.value==='trusted'})});
+    loadWorkers();
+  }));
+}
+async function loadUsers(){
+  const r=await fetch('/ui/admin/api/users',{headers:{Accept:'application/json'}});
+  if(!r.ok)return;
+  const v=await r.json();
+  const rows=document.getElementById('user-rows');
+  rows.replaceChildren();
+  for(const u of v.users||[]){
+    const tr=document.createElement('tr');
+    const roleSel='<select class="role-sel" data-id="'+u.id+'"><option value="user" '+(u.role==='user'?'selected':'')+'>user</option><option value="admin" '+(u.role==='admin'?'selected':'')+'>admin</option></select>';
+    tr.innerHTML='<td><div class="t-main">'+esc(u.email)+'</div></td>'+
+      '<td>'+roleSel+'</td>'+
+      '<td>'+pill(u.verified?'Verified':'—',u.verified?'pill-success':'pill-waiting',null)+'</td>'+
+      '<td style="color:var(--text-2);font-size:12.5px">'+fmtTime(u.created_at)+'</td>';
+    rows.append(tr);
+  }
+  document.getElementById('user-count').textContent=(v.users||[]).length+' users';
+  document.querySelectorAll('.role-sel').forEach(sel=>sel.addEventListener('change',async()=>{
+    await fetch('/ui/admin/api/users/'+sel.dataset.id+'/role',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({role:sel.value})});
+    loadUsers();
+  }));
+  const keys=await (await fetch('/ui/admin/api/worker-keys',{headers:{Accept:'application/json'}})).json();
+  const keyRows=document.getElementById('key-rows');
+  keyRows.replaceChildren();
+  const emailOf={};for(const u of v.users||[])emailOf[u.id]=u.email;
+  for(const k of keys.worker_keys||[]){
+    const tr=document.createElement('tr');
+    tr.innerHTML='<td class="t-main">'+esc(k.name)+'</td>'+
+      '<td><code style="color:var(--text-2)">'+esc(k.prefix)+'…</code></td>'+
+      '<td style="color:var(--text-2)">'+esc(emailOf[k.user_id]||k.user_id.slice(0,8)+'…')+'</td>'+
+      '<td style="color:var(--text-2);font-size:12.5px">'+fmtTime(k.created_at)+'</td>'+
+      '<td style="color:var(--text-2);font-size:12.5px">'+(k.last_used_at?fmtTime(k.last_used_at):'never')+'</td>'+
+      '<td>'+((k.revoked_at)?'<span class="pill pill-danger"><i></i>Revoked</span>':'<button class="btn btn-danger btn-sm key-revoke" data-id="'+k.id+'">Revoke</button>')+'</td>';
+    keyRows.append(tr);
+  }
+  document.querySelectorAll('.key-revoke').forEach(btn=>btn.addEventListener('click',async()=>{
+    if(!confirm('Revoke this worker key? The machine will be cut off on its next refresh.'))return;
+    await fetch('/ui/admin/api/worker-keys/'+btn.dataset.id+'/revoke',{method:'POST'});
+    loadUsers();
+  }));
+}
+async function loadWorkloads(){
+  const r=await fetch('/ui/admin/api/workloads',{headers:{Accept:'application/json'}});
+  if(!r.ok)return;
+  const v=await r.json();
+  const rows=document.getElementById('workload-rows');
+  rows.replaceChildren();
+  for(const w of v.workloads||[]){
+    const tr=document.createElement('tr');
+    tr.innerHTML='<td><div class="t-main">'+esc(w.name)+'</div><div class="t-sub" style="font-family:inherit">'+esc(w.description||'')+'</div></td>'+
+      '<td><span class="pill pill-active"><i></i>'+esc(w.reduction)+'</span></td>'+
+      '<td style="color:var(--text-2);font-size:12.5px">'+w.parameters+' declared</td>'+
+      '<td>'+pill(w.upload_ready?'ready':'—',w.upload_ready?'pill-success':'pill-waiting',null)+'</td>'+
+      '<td><button class="toggle wl-toggle '+(w.enabled?'on':'')+'" data-name="'+w.name+'" aria-label="enabled"></button></td>';
+    rows.append(tr);
+  }
+  document.querySelectorAll('.wl-toggle').forEach(t=>t.addEventListener('click',async()=>{
+    const enabled=!t.classList.contains('on');
+    await fetch('/ui/admin/api/workloads/'+encodeURIComponent(t.dataset.name)+'/enabled',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({enabled})});
+    t.classList.toggle('on',enabled);
+  }));
+}
+async function loadSettings(){
+  const r=await fetch('/ui/admin/api/settings',{headers:{Accept:'application/json'}});
+  if(!r.ok)return;
+  const v=await r.json();
+  document.getElementById('s-public').textContent=v.public_url||'—';
+  document.getElementById('s-addr').textContent=v.addr;
+  document.getElementById('s-datadir').textContent=v.data_dir||'—';
+  document.getElementById('s-engine').textContent=v.db_engine;
+  document.getElementById('s-binary').textContent=v.binary||'—';
+}
+document.getElementById('reveal').addEventListener('click',async e=>{
+  const tok=document.getElementById('tok');
+  if(tok.textContent.startsWith('•')){
+    const r=await fetch('/ui/admin/api/token/reveal',{method:'POST',headers:{Accept:'application/json'}});
+    if(!r.ok)return;
+    const v=await r.json();
+    tok.textContent=v.token||'(none)';
+    e.target.textContent='Hide';
+  }else{tok.textContent='••••••••••••••••••••••••';e.target.textContent='Reveal'}
+});
+document.querySelectorAll('.toggle').forEach(t=>t.addEventListener('click',()=>t.classList.toggle('on')));
+</script>
 </body>
 </html>
 {{end}}

coordinator/internal/transport/http/templates/login.html

@@ -13,6 +13,7 @@
     <p class="eyebrow">SciMesh</p>
     <h1>Sign in</h1>
     <form method="post" action="/ui/login">
+      {{if .Next}}<input type="hidden" name="next" value="{{.Next}}">{{end}}
       <label for="email">Email</label>
       <input id="email" name="email" type="email" autocomplete="username" required autofocus>
       <label for="password">Password</label>

coordinator/internal/transport/http/ui_admin.go

@@ -2,14 +2,17 @@ package http
 
 import (
 	"context"
+	"encoding/json"
 	"io"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 
 	"github.com/google/uuid"
 
 	"github.com/emil28092005/SciMesh/coordinator/internal/authctx"
+	"github.com/emil28092005/SciMesh/coordinator/internal/domain"
 )
 
 // adminUserActions are the userservice endpoints the admin panel may invoke, by
@@ -23,12 +26,14 @@ var adminUserActions = map[string]bool{
 }
 
 // requireAdmin gates a route on the session caller being an admin. It runs
-// inside withUISession, which has already stamped the requester. A non-admin is
-// sent back to the dashboard rather than shown the panel.
+// inside withUISession, which has already stamped the requester. A signed-in
+// non-admin is told why (and bounced to the login with the message); an
+// unauthenticated caller never gets here — the gate has already sent them to
+// the login page with the intended destination.
 func requireAdmin(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if req, ok := authctx.From(r.Context()); !ok || !req.IsAdmin() {
-			http.Redirect(w, r, "/ui", http.StatusSeeOther)
+			http.Redirect(w, r, "/ui/login?error=admin+role+required", http.StatusSeeOther)
 			return
 		}
 		next.ServeHTTP(w, r)
@@ -112,3 +117,271 @@ func (s *Server) callUserserviceAuthed(ctx context.Context, method, path, bearer
 	}
 	return resp.StatusCode, body, nil
 }
+
+// handleUIAdminSystemJSON serves the admin "System" page: process info,
+// storage figures and health. Admin-only via the route chain.
+func (s *Server) handleUIAdminSystemJSON(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	view, err := s.uc.Admin.System(ctx)
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, view)
+}
+
+// handleUIAdminJobsJSON serves one page of the admin jobs table. The owner
+// emails are resolved from the userservice when it is reachable; the resolver
+// failing is not fatal (cards fall back to short ids).
+func (s *Server) handleUIAdminJobsJSON(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
+	perPage, _ := strconv.Atoi(r.URL.Query().Get("per_page"))
+	status := strings.TrimSpace(r.URL.Query().Get("status"))
+	view, err := s.uc.Admin.Jobs(ctx, status, page, perPage, s.adminOwnerEmails(r))
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, view)
+}
+
+// handleUIAdminMetricsJSON serves the admin "Metrics" page.
+func (s *Server) handleUIAdminMetricsJSON(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	view, err := s.uc.Admin.Metrics(ctx)
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, view)
+}
+
+// handleUIAdminWorkersJSON serves the admin "Workers" page.
+func (s *Server) handleUIAdminWorkersJSON(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	view, err := s.uc.Admin.Workers(ctx, s.adminOwnerEmails(r))
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, view)
+}
+
+// handleUIAdminSetTrustJSON flips one worker's trust level.
+func (s *Server) handleUIAdminSetTrustJSON(w http.ResponseWriter, r *http.Request) {
+	id, err := uuid.Parse(r.PathValue("id"))
+	if err != nil {
+		s.writeError(w, r, domain.ErrInvalidInput)
+		return
+	}
+	var body struct {
+		Trusted bool `json:"trusted"`
+	}
+	if err := decodeJSON(r, &body); err != nil {
+		s.writeError(w, r, domain.ErrInvalidInput)
+		return
+	}
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	if err := s.uc.Admin.SetTrust(ctx, id, body.Trusted); err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// handleUIAdminWorkloadsJSON serves the catalog with persisted enable flags.
+func (s *Server) handleUIAdminWorkloadsJSON(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	view, err := s.uc.Admin.Workloads(ctx)
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, view)
+}
+
+// handleUIAdminSetWorkloadEnabledJSON flips a workload's enable flag.
+func (s *Server) handleUIAdminSetWorkloadEnabledJSON(w http.ResponseWriter, r *http.Request) {
+	name := r.PathValue("name")
+	var body struct {
+		Enabled bool `json:"enabled"`
+	}
+	if err := decodeJSON(r, &body); err != nil {
+		s.writeError(w, r, domain.ErrInvalidInput)
+		return
+	}
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	if err := s.uc.Admin.SetWorkloadEnabled(ctx, name, body.Enabled); err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// handleUIAdminSettingsJSON serves the read-only cluster settings.
+func (s *Server) handleUIAdminSettingsJSON(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, s.uc.Admin.Settings())
+}
+
+// handleUIAdminRevealTokenJSON reveals the shared worker token, auditing the
+// reveal. Admin-only via the route chain.
+func (s *Server) handleUIAdminRevealTokenJSON(w http.ResponseWriter, r *http.Request) {
+	actor := "admin"
+	if req, ok := authctx.From(r.Context()); ok {
+		actor = req.Role + ":" + req.UserID.String()
+	}
+	ctx, cancel := s.reqCtx(r)
+	defer cancel()
+	writeJSON(w, http.StatusOK, map[string]string{"token": s.uc.Admin.RevealWorkerToken(ctx, actor)})
+}
+
+// handleUIAdminUsersJSON serves the account table, proxied from the
+// userservice. The userservice projects away password hashes; a failure here
+// is a 502 rather than a silent empty table.
+func (s *Server) handleUIAdminUsersJSON(w http.ResponseWriter, r *http.Request) {
+	c, err := r.Cookie(sessionCookie)
+	if err != nil {
+		redirectToLogin(w, r)
+		return
+	}
+	status, body, err := s.callUserserviceAuthed(r.Context(), http.MethodGet, "/users", c.Value)
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	if status != http.StatusOK {
+		writeJSON(w, status, map[string]string{"error": "userservice: unexpected response"})
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_, _ = w.Write(body)
+}
+
+// handleUIAdminSetUserRoleJSON changes a user's role through the userservice
+// promote/demote actions.
+func (s *Server) handleUIAdminSetUserRoleJSON(w http.ResponseWriter, r *http.Request) {
+	id, err := uuid.Parse(r.PathValue("id"))
+	if err != nil {
+		s.writeError(w, r, domain.ErrInvalidInput)
+		return
+	}
+	var body struct {
+		Role string `json:"role"`
+	}
+	if err := decodeJSON(r, &body); err != nil {
+		s.writeError(w, r, domain.ErrInvalidInput)
+		return
+	}
+	action := ""
+	switch body.Role {
+	case "admin":
+		action = "promote"
+	case "user":
+		action = "demote"
+	default:
+		s.writeError(w, r, domain.ErrInvalidInput)
+		return
+	}
+	c, err := r.Cookie(sessionCookie)
+	if err != nil {
+		redirectToLogin(w, r)
+		return
+	}
+	status, _, err := s.callUserserviceAuthed(r.Context(), http.MethodPost, "/users/"+id.String()+"/"+action, c.Value)
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	if status != http.StatusNoContent {
+		writeJSON(w, status, map[string]string{"error": "userservice: unexpected response"})
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// handleUIAdminWorkerKeysJSON serves every worker key with its owning user,
+// proxied from the userservice.
+func (s *Server) handleUIAdminWorkerKeysJSON(w http.ResponseWriter, r *http.Request) {
+	c, err := r.Cookie(sessionCookie)
+	if err != nil {
+		redirectToLogin(w, r)
+		return
+	}
+	status, body, err := s.callUserserviceAuthed(r.Context(), http.MethodGet, "/worker-keys/all", c.Value)
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	if status != http.StatusOK {
+		writeJSON(w, status, map[string]string{"error": "userservice: unexpected response"})
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_, _ = w.Write(body)
+}
+
+// handleUIAdminRevokeKeyJSON revokes any worker key through the userservice
+// (whose DELETE endpoint already lets an admin revoke keys of any owner).
+func (s *Server) handleUIAdminRevokeKeyJSON(w http.ResponseWriter, r *http.Request) {
+	id, err := uuid.Parse(r.PathValue("id"))
+	if err != nil {
+		s.writeError(w, r, domain.ErrInvalidInput)
+		return
+	}
+	c, err := r.Cookie(sessionCookie)
+	if err != nil {
+		redirectToLogin(w, r)
+		return
+	}
+	status, _, err := s.callUserserviceAuthed(r.Context(), http.MethodDelete, "/worker-keys/"+id.String(), c.Value)
+	if err != nil {
+		s.writeError(w, r, err)
+		return
+	}
+	if status != http.StatusNoContent {
+		writeJSON(w, status, map[string]string{"error": "userservice: unexpected response"})
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// adminOwnerEmails resolves job owner ids to emails through the userservice,
+// which is the only place email addresses live. It never blocks the page on
+// failure: an empty map leaves the admin jobs table on short ids.
+func (s *Server) adminOwnerEmails(r *http.Request) map[uuid.UUID]string {
+	if s.userserviceURL == "" {
+		return nil
+	}
+	c, err := r.Cookie(sessionCookie)
+	if err != nil {
+		return nil
+	}
+	status, body, err := s.callUserserviceAuthed(r.Context(), http.MethodGet, "/users", c.Value)
+	if err != nil || status != http.StatusOK {
+		return nil
+	}
+	var users []struct {
+		ID    string `json:"id"`
+		Email string `json:"email"`
+	}
+	if err := json.Unmarshal(body, &users); err != nil {
+		return nil
+	}
+	out := make(map[uuid.UUID]string, len(users))
+	for _, user := range users {
+		id, err := uuid.Parse(user.ID)
+		if err != nil {
+			continue
+		}
+		out[id] = user.Email
+	}
+	return out
+}

coordinator/internal/transport/http/ui_admin_internal_test.go

@@ -30,15 +30,15 @@ func TestRequireAdminAllowsAdminOnly(t *testing.T) {
 		t.Error("admin must reach the handler")
 	}
 
-	// Plain user is redirected to the dashboard.
+	// Plain user is redirected to the login with the reason.
 	reached = false
 	rec := httptest.NewRecorder()
 	h.ServeHTTP(rec, adminReq(t, "user"))
 	if reached {
 		t.Error("non-admin must not reach the handler")
 	}
-	if rec.Code != http.StatusSeeOther || rec.Header().Get("Location") != "/ui" {
-		t.Errorf("non-admin got %d -> %q, want 303 -> /ui", rec.Code, rec.Header().Get("Location"))
+	if rec.Code != http.StatusSeeOther || rec.Header().Get("Location") != "/ui/login?error=admin+role+required" {
+		t.Errorf("non-admin got %d -> %q, want 303 -> login with the admin-required error", rec.Code, rec.Header().Get("Location"))
 	}
 }
 

coordinator/internal/transport/http/ui_auth.go

@@ -6,6 +6,8 @@ import (
 	"encoding/json"
 	"io"
 	"net/http"
+	"net/url"
+	"strings"
 	"time"
 
 	"github.com/emil28092005/SciMesh/coordinator/internal/authctx"
@@ -53,7 +55,7 @@ type tokenVerifier interface {
 }
 
 func (s *Server) handleUILoginForm(w http.ResponseWriter, r *http.Request) {
-	s.renderUI(w, "login.html", map[string]any{"Error": r.URL.Query().Get("error")})
+	s.renderUI(w, "login.html", map[string]any{"Error": r.URL.Query().Get("error"), "Next": r.URL.Query().Get("next")})
 }
 
 func (s *Server) handleUIRegisterForm(w http.ResponseWriter, r *http.Request) {
@@ -85,7 +87,14 @@ func (s *Server) handleUILogin(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	setSessionCookie(w, r, resp.Token)
-	http.Redirect(w, r, "/ui", http.StatusSeeOther)
+	// Land back where the user was headed (e.g. /ui/admin); never follow a
+	// value that escapes the UI prefix — that would be an open redirect.
+	next := strings.TrimSpace(r.FormValue("next"))
+	if next == "" || !strings.HasPrefix(next, "/ui/") {
+		next = "/ui"
+	}
+	//nolint:gosec // G710: next is validated to start with /ui/ just above
+	http.Redirect(w, r, next, http.StatusSeeOther)
 }
 
 // handleUIRegister creates an account through the userservice, then sends the
@@ -167,5 +176,15 @@ func clearSessionCookie(w http.ResponseWriter, r *http.Request) {
 }
 
 func redirectToLogin(w http.ResponseWriter, r *http.Request) {
-	http.Redirect(w, r, "/ui/login", http.StatusSeeOther)
+	// Remember where the user was headed so a successful login lands back
+	// there (e.g. /ui/admin) instead of the control room.
+	next := r.URL.Path
+	if !strings.HasPrefix(next, "/ui/") {
+		next = ""
+	}
+	target := "/ui/login"
+	if next != "" {
+		target += "?next=" + url.QueryEscape(next)
+	}
+	http.Redirect(w, r, target, http.StatusSeeOther)
 }

coordinator/internal/transport/http/ui_auth_internal_test.go

@@ -173,3 +173,56 @@ func TestHandleUILogoutClearsCookie(t *testing.T) {
 		t.Error("logout must clear the session cookie")
 	}
 }
+
+func TestHandleUILoginRedirectsToNext(t *testing.T) {
+	stub := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte(`{"token":"t"}`))
+	}))
+	defer stub.Close()
+	s := newLoginServer(stub)
+
+	// A UI-scoped next is honoured: the admin lands back on the console.
+	rec := httptest.NewRecorder()
+	s.handleUILogin(rec, postForm("/ui/login", url.Values{"email": {"a@b.com"}, "password": {"p"}, "next": {"/ui/admin"}}))
+	if rec.Code != http.StatusSeeOther || rec.Header().Get("Location") != "/ui/admin" {
+		t.Errorf("got %d -> %q, want 303 -> /ui/admin", rec.Code, rec.Header().Get("Location"))
+	}
+
+	// Anything outside the UI prefix must not become a redirect target.
+	for _, next := range []string{"https://evil.example", "/", "//evil.example", "/api/jobs"} {
+		rec = httptest.NewRecorder()
+		s.handleUILogin(rec, postForm("/ui/login", url.Values{"email": {"a@b.com"}, "password": {"p"}, "next": {next}}))
+		if loc := rec.Header().Get("Location"); loc != "/ui" {
+			t.Errorf("next=%q landed on %q, want /ui (no open redirect)", next, loc)
+		}
+	}
+}
+
+func TestRedirectToLoginCarriesNext(t *testing.T) {
+	rec := httptest.NewRecorder()
+	req := newReq(http.MethodGet, "/ui/admin", nil)
+	redirectToLogin(rec, req)
+	if loc := rec.Header().Get("Location"); loc != "/ui/login?next=%2Fui%2Fadmin" {
+		t.Errorf("location = %q, want /ui/login?next=%%2Fui%%2Fadmin", loc)
+	}
+
+	// Paths outside the UI stay on the plain login.
+	rec = httptest.NewRecorder()
+	req = newReq(http.MethodGet, "/health", nil)
+	redirectToLogin(rec, req)
+	if loc := rec.Header().Get("Location"); loc != "/ui/login" {
+		t.Errorf("location = %q, want /ui/login", loc)
+	}
+}
+
+func TestLoginFormRendersNext(t *testing.T) {
+	html := render(t, "login.html", map[string]any{"Next": "/ui/admin"})
+	if !strings.Contains(html, `name="next" value="/ui/admin"`) {
+		t.Error("login form must carry the next field")
+	}
+	html = render(t, "login.html", map[string]any{})
+	if strings.Contains(html, `name="next"`) {
+		t.Error("login form must not render next when absent")
+	}
+}

coordinator/internal/usecase/admin.go

@@ -0,0 +1,523 @@
+package usecase
+
+import (
+	"context"
+	"log/slog"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/domain"
+	"github.com/emil28092005/SciMesh/coordinator/internal/workloads"
+)
+
+// AdminReadRepository is the bounded read projection behind the coordinator
+// admin console. Like UIReadRepository it exposes no storage paths or
+// credentials; unlike it, every method is admin-scoped (no owner filter).
+type AdminReadRepository interface {
+	// ListJobsPaginated returns one page of jobs filtered by stored status;
+	// an empty status returns all. total counts the filtered set (for the
+	// pager).
+	ListJobsPaginated(ctx context.Context, status string, limit, offset int) (jobs []domain.Job, total int, err error)
+	// CountJobsByStatus powers the status tabs: every stored status, all jobs.
+	CountJobsByStatus(ctx context.Context) (map[string]int, error)
+	// TaskCountsByJobs aggregates task statuses per job for progress bars.
+	TaskCountsByJobs(ctx context.Context, jobIDs []uuid.UUID) (map[uuid.UUID]map[string]int, error)
+	// JobCountsByDay buckets jobs created since `since` by UTC day
+	// ("2006-01-02").
+	JobCountsByDay(ctx context.Context, since time.Time) (map[string]int, error)
+	// JobCountsByWorkload counts all jobs per workload name.
+	JobCountsByWorkload(ctx context.Context) (map[string]int, error)
+	// TaskStats totals shard execution: completed/failed counts and the mean
+	// run duration of completed shards (seconds; 0 when nothing completed).
+	TaskStats(ctx context.Context) (completed, failed int64, avgSeconds float64, err error)
+	// ArtifactSizeByKind sums stored bytes per artifact kind.
+	ArtifactSizeByKind(ctx context.Context) (map[string]int64, error)
+	// DatabaseSizeBytes reports the engine's own size figure (sqlite pages,
+	// pg_database_size); 0 when the engine cannot say.
+	DatabaseSizeBytes(ctx context.Context) (int64, error)
+}
+
+// AdminNodeInfo describes the running coordinator process to the admin
+// console. It is static for the process lifetime and assembled at startup.
+type AdminNodeInfo struct {
+	Version     string
+	StartedAt   time.Time
+	Binary      string
+	Addr        string
+	DataDir     string
+	DBEngine    string
+	PublicURL   string
+	Userservice string // base URL; empty when the UI runs without user auth
+	// WorkerToken reads the shared worker token for the Settings page. It is a
+	// func so serve mode can read the token file lazily after provisioning.
+	WorkerToken func() string
+}
+
+type AdminStorageView struct {
+	DatasetsBytes  int64 `json:"datasets_bytes"`
+	ArtifactsBytes int64 `json:"artifacts_bytes"`
+	DatabaseBytes  int64 `json:"database_bytes"`
+}
+
+type AdminHealthView struct {
+	Database    string `json:"database"`    // connected | error
+	Reducer     string `json:"reducer"`     // idle | active
+	Userservice string `json:"userservice"` // embedded | external | disabled
+}
+
+type AdminNodeView struct {
+	Binary    string `json:"binary"`
+	Addr      string `json:"addr"`
+	DataDir   string `json:"data_dir"`
+	DBEngine  string `json:"db_engine"`
+	PublicURL string `json:"public_url"`
+}
+
+type AdminSystemView struct {
+	Version       string           `json:"version"`
+	StartedAt     time.Time        `json:"started_at"`
+	UptimeSeconds int64            `json:"uptime_seconds"`
+	ActiveJobs    int              `json:"active_jobs"`
+	RunningJobs   int              `json:"running_jobs"`
+	WaitingJobs   int              `json:"waiting_jobs"`
+	WorkersOnline int              `json:"workers_online"`
+	WorkersBusy   int              `json:"workers_busy"`
+	WorkersTotal  int              `json:"workers_total"`
+	Storage       AdminStorageView `json:"storage"`
+	Health        AdminHealthView  `json:"health"`
+	Node          AdminNodeView    `json:"node"`
+}
+
+// AdminJobCard is one row of the admin jobs table. Owner is a display string
+// resolved by the caller (email when the userservice is reachable, a short id
+// or "cluster token" otherwise).
+type AdminJobCard struct {
+	ID          string     `json:"id"`
+	Workload    string     `json:"workload"`
+	Status      string     `json:"status"`
+	OwnerID     string     `json:"owner_id,omitempty"`
+	Owner       string     `json:"owner"`
+	Total       int        `json:"total"`
+	Completed   int        `json:"completed"`
+	Failed      int        `json:"failed"`
+	CreatedAt   time.Time  `json:"created_at"`
+	CompletedAt *time.Time `json:"completed_at,omitempty"`
+}
+
+type AdminJobsView struct {
+	Jobs    []AdminJobCard `json:"jobs"`
+	Total   int            `json:"total"`
+	Page    int            `json:"page"`
+	PerPage int            `json:"per_page"`
+	// Counts holds every stored status for the filter tabs (all jobs, not
+	// just the current filter).
+	Counts map[string]int `json:"counts"`
+}
+
+type AdminDayCount struct {
+	Day   string `json:"day"`
+	Count int    `json:"count"`
+}
+
+type AdminWorkloadCount struct {
+	Workload string `json:"workload"`
+	Count    int    `json:"count"`
+}
+
+type AdminMetricsView struct {
+	JobsLast7Days   int                  `json:"jobs_last_7_days"`
+	JobsByDay       []AdminDayCount      `json:"jobs_by_day"`
+	JobsByWorkload  []AdminWorkloadCount `json:"jobs_by_workload"`
+	ShardsCompleted int64                `json:"shards_completed"`
+	ShardsFailed    int64                `json:"shards_failed"`
+	AvgShardSeconds float64              `json:"avg_shard_seconds"`
+	FailureRate     float64              `json:"failure_rate"`
+}
+
+// Admin answers the coordinator admin console from the bounded read model
+// plus process info supplied at startup.
+type Admin struct {
+	read     AdminReadRepository
+	uiRead   UIReadRepository
+	workers  WorkerRepository
+	settings WorkloadSettingsRepository
+	catalog  *workloads.Catalog
+	node     AdminNodeInfo
+	ready    func(context.Context) error
+	now      func() time.Time
+	log      *slog.Logger
+	audit    func(ctx context.Context, action, detail string)
+}
+
+func NewAdmin(read AdminReadRepository, uiRead UIReadRepository, workers WorkerRepository,
+	settings WorkloadSettingsRepository, catalog *workloads.Catalog, node AdminNodeInfo,
+	ready func(context.Context) error, now func() time.Time) *Admin {
+	if now == nil {
+		now = time.Now
+	}
+	return &Admin{read: read, uiRead: uiRead, workers: workers, settings: settings, catalog: catalog, node: node, ready: ready, now: now}
+}
+
+// WithAuditLog attaches an audit sink for sensitive actions (token reveal).
+// Without it the admin usecase stays silent about them.
+func (a *Admin) WithAuditLog(log *slog.Logger, audit func(ctx context.Context, action, detail string)) *Admin {
+	a.log = log
+	a.audit = audit
+	return a
+}
+
+func (a *Admin) revealToken(ctx context.Context, actor string) string {
+	if a.node.WorkerToken != nil {
+		return a.node.WorkerToken()
+	}
+	return ""
+}
+
+func (a *Admin) System(ctx context.Context) (AdminSystemView, error) {
+	counts, err := a.read.CountJobsByStatus(ctx)
+	if err != nil {
+		return AdminSystemView{}, err
+	}
+	workers, err := a.uiRead.ListWorkers(ctx, 100)
+	if err != nil {
+		return AdminSystemView{}, err
+	}
+	sizes, err := a.read.ArtifactSizeByKind(ctx)
+	if err != nil {
+		return AdminSystemView{}, err
+	}
+	dbSize, err := a.read.DatabaseSizeBytes(ctx)
+	if err != nil {
+		return AdminSystemView{}, err
+	}
+
+	out := AdminSystemView{
+		Version:     a.node.Version,
+		StartedAt:   a.node.StartedAt,
+		WaitingJobs: counts[string(domain.JobPending)],
+		RunningJobs: counts[string(domain.JobRunning)] + counts[string(domain.JobReducing)],
+	}
+	out.ActiveJobs = out.WaitingJobs + out.RunningJobs
+	out.UptimeSeconds = int64(a.now().Sub(a.node.StartedAt).Seconds())
+	if out.UptimeSeconds < 0 {
+		out.UptimeSeconds = 0
+	}
+	for _, w := range workers {
+		out.WorkersTotal++
+		switch w.Status {
+		case domain.WorkerOnline:
+			out.WorkersOnline++
+		case domain.WorkerBusy:
+			out.WorkersOnline++
+			out.WorkersBusy++
+		}
+	}
+	for kind, size := range sizes {
+		if kind == string(domain.ArtifactInput) {
+			out.Storage.DatasetsBytes += size
+		} else {
+			out.Storage.ArtifactsBytes += size
+		}
+	}
+	out.Storage.DatabaseBytes = dbSize
+
+	out.Health.Database = "connected"
+	if a.ready != nil {
+		if err := a.ready(ctx); err != nil {
+			out.Health.Database = "error"
+		}
+	}
+	out.Health.Reducer = "idle"
+	if counts[string(domain.JobReducing)] > 0 {
+		out.Health.Reducer = "active"
+	}
+	out.Health.Userservice = "disabled"
+	if a.node.Userservice != "" {
+		out.Health.Userservice = "external"
+		// The embedded userservice always binds the loopback interface.
+		if strings.Contains(a.node.Userservice, "127.0.0.1") || strings.Contains(a.node.Userservice, "localhost") {
+			out.Health.Userservice = "embedded"
+		}
+	}
+	out.Node = AdminNodeView{
+		Binary:    a.node.Binary,
+		Addr:      a.node.Addr,
+		DataDir:   a.node.DataDir,
+		DBEngine:  a.node.DBEngine,
+		PublicURL: a.node.PublicURL,
+	}
+	return out, nil
+}
+
+// Jobs returns one page of the admin jobs table. The owner emails map may be
+// nil; cards then fall back to a short id or "cluster token".
+func (a *Admin) Jobs(ctx context.Context, status string, page, perPage int, ownerEmails map[uuid.UUID]string) (AdminJobsView, error) {
+	if page < 1 {
+		page = 1
+	}
+	if perPage < 1 || perPage > 100 {
+		perPage = 20
+	}
+	jobs, total, err := a.read.ListJobsPaginated(ctx, status, perPage, (page-1)*perPage)
+	if err != nil {
+		return AdminJobsView{}, err
+	}
+	counts, err := a.read.CountJobsByStatus(ctx)
+	if err != nil {
+		return AdminJobsView{}, err
+	}
+	jobIDs := make([]uuid.UUID, 0, len(jobs))
+	for _, job := range jobs {
+		jobIDs = append(jobIDs, job.ID)
+	}
+	taskCounts, err := a.read.TaskCountsByJobs(ctx, jobIDs)
+	if err != nil {
+		return AdminJobsView{}, err
+	}
+	out := AdminJobsView{
+		Jobs:    make([]AdminJobCard, 0, len(jobs)),
+		Total:   total,
+		Page:    page,
+		PerPage: perPage,
+		Counts:  counts,
+	}
+	for _, job := range jobs {
+		tc := taskCounts[job.ID]
+		card := AdminJobCard{
+			ID:          job.ID.String(),
+			Workload:    job.Workload,
+			CreatedAt:   job.CreatedAt,
+			CompletedAt: job.CompletedAt,
+			Owner:       "cluster token",
+		}
+		var pending, leased, cancelled int
+		for status, n := range tc {
+			card.Total += n
+			switch domain.TaskStatus(status) {
+			case domain.TaskCompleted:
+				card.Completed = n
+			case domain.TaskFailed:
+				card.Failed = n
+			case domain.TaskPending:
+				pending = n
+			case domain.TaskLeased, domain.TaskRunning:
+				leased += n
+			case domain.TaskCancelled:
+				cancelled = n
+			}
+		}
+		// Derive the status exactly like the operator dashboard does, so the
+		// two views never disagree about the same job.
+		progress := domain.JobProgress{Job: job, Total: card.Total, Pending: pending, Leased: leased, Done: card.Completed, Failed: card.Failed, Cancelled: cancelled}
+		card.Status = string(progress.DeriveStatus())
+		if job.OwnerID != nil {
+			card.OwnerID = job.OwnerID.String()
+			card.Owner = "user " + shortID(job.OwnerID.String())
+			if email, ok := ownerEmails[*job.OwnerID]; ok && email != "" {
+				card.Owner = email
+			}
+		}
+		out.Jobs = append(out.Jobs, card)
+	}
+	return out, nil
+}
+
+func (a *Admin) Metrics(ctx context.Context) (AdminMetricsView, error) {
+	since := a.now().Add(-6 * 24 * time.Hour).Truncate(24 * time.Hour)
+	byDay, err := a.read.JobCountsByDay(ctx, since)
+	if err != nil {
+		return AdminMetricsView{}, err
+	}
+	byWorkload, err := a.read.JobCountsByWorkload(ctx)
+	if err != nil {
+		return AdminMetricsView{}, err
+	}
+	completed, failed, avg, err := a.read.TaskStats(ctx)
+	if err != nil {
+		return AdminMetricsView{}, err
+	}
+	out := AdminMetricsView{
+		JobsByDay:       make([]AdminDayCount, 0, 7),
+		JobsByWorkload:  make([]AdminWorkloadCount, 0, len(byWorkload)),
+		ShardsCompleted: completed,
+		ShardsFailed:    failed,
+		AvgShardSeconds: avg,
+	}
+	if completed+failed > 0 {
+		out.FailureRate = float64(failed) / float64(completed+failed)
+	}
+	for i := 0; i < 7; i++ {
+		day := since.Add(time.Duration(i) * 24 * time.Hour).UTC().Format("2006-01-02")
+		count := byDay[day]
+		out.JobsByDay = append(out.JobsByDay, AdminDayCount{Day: day, Count: count})
+		out.JobsLast7Days += count
+	}
+	for workload, count := range byWorkload {
+		out.JobsByWorkload = append(out.JobsByWorkload, AdminWorkloadCount{Workload: workload, Count: count})
+	}
+	sort.Slice(out.JobsByWorkload, func(i, j int) bool {
+		if out.JobsByWorkload[i].Count != out.JobsByWorkload[j].Count {
+			return out.JobsByWorkload[i].Count > out.JobsByWorkload[j].Count
+		}
+		return out.JobsByWorkload[i].Workload < out.JobsByWorkload[j].Workload
+	})
+	return out, nil
+}
+
+// AdminWorkerCard is one row of the admin workers table.
+type AdminWorkerCard struct {
+	ID              string    `json:"id"`
+	Name            string    `json:"name"`
+	Status          string    `json:"status"`
+	Capabilities    []string  `json:"capabilities"`
+	Trust           string    `json:"trust"`
+	OwnerID         string    `json:"owner_id,omitempty"`
+	Owner           string    `json:"owner"`
+	Completed       int       `json:"completed"`
+	LastHeartbeatAt time.Time `json:"last_heartbeat_at"`
+}
+
+type AdminWorkersView struct {
+	Workers []AdminWorkerCard `json:"workers"`
+}
+
+// Workers lists the whole fleet for the admin console. Owner emails are
+// resolved through the same map as the jobs table (userservice-backed).
+func (a *Admin) Workers(ctx context.Context, ownerEmails map[uuid.UUID]string) (AdminWorkersView, error) {
+	workers, err := a.uiRead.ListWorkers(ctx, 100)
+	if err != nil {
+		return AdminWorkersView{}, err
+	}
+	out := AdminWorkersView{Workers: make([]AdminWorkerCard, 0, len(workers))}
+	for _, w := range workers {
+		card := AdminWorkerCard{
+			ID:              w.ID.String(),
+			Name:            w.Name,
+			Status:          string(w.Status),
+			Capabilities:    w.Capabilities,
+			Trust:           string(w.TrustLevel),
+			LastHeartbeatAt: w.LastHeartbeatAt,
+			Owner:           "cluster token",
+		}
+		if w.OwnerID != nil {
+			card.OwnerID = w.OwnerID.String()
+			card.Owner = "user " + shortID(w.OwnerID.String())
+			if email, ok := ownerEmails[*w.OwnerID]; ok && email != "" {
+				card.Owner = email
+			}
+		}
+		out.Workers = append(out.Workers, card)
+	}
+	return out, nil
+}
+
+// SetTrust reclassifies one worker (trusted/untrusted).
+func (a *Admin) SetTrust(ctx context.Context, id uuid.UUID, trusted bool) error {
+	trust := domain.WorkerUntrusted
+	if trusted {
+		trust = domain.WorkerTrusted
+	}
+	return a.workers.SetTrust(ctx, id, trust)
+}
+
+// AdminWorkloadView is the catalog plus the persisted enable flag.
+type AdminWorkloadView struct {
+	Name        string     `json:"name"`
+	Description string     `json:"description"`
+	Reduction   string     `json:"reduction"`
+	Parameters  int        `json:"parameters"`
+	UploadReady bool       `json:"upload_ready"`
+	Enabled     bool       `json:"enabled"`
+	DefaultOn   bool       `json:"default_on"`
+	UpdatedAt   *time.Time `json:"updated_at,omitempty"`
+}
+
+type AdminWorkloadsView struct {
+	Workloads []AdminWorkloadView `json:"workloads"`
+}
+
+// Workloads lists the catalog with persisted enable/disable overrides.
+func (a *Admin) Workloads(ctx context.Context) (AdminWorkloadsView, error) {
+	if a.catalog == nil {
+		return AdminWorkloadsView{}, domain.ErrInvalidInput
+	}
+	items := a.catalog.Items()
+	overrides, err := a.settings.List(ctx)
+	if err != nil {
+		return AdminWorkloadsView{}, err
+	}
+	enabled := make(map[string]WorkloadSetting, len(overrides))
+	for _, s := range overrides {
+		enabled[s.Workload] = s
+	}
+	out := AdminWorkloadsView{Workloads: make([]AdminWorkloadView, 0, len(items))}
+	for _, item := range items {
+		params := 0
+		if properties, ok := item.Parameters["properties"].(map[string]any); ok {
+			params = len(properties)
+		}
+		view := AdminWorkloadView{
+			Name:        item.Name,
+			Description: item.Description,
+			Reduction:   item.Reduction,
+			Parameters:  params,
+			UploadReady: item.UploadReady,
+			Enabled:     true,
+			DefaultOn:   true,
+		}
+		if s, ok := enabled[item.Name]; ok {
+			view.Enabled = s.Enabled
+			view.DefaultOn = false
+			view.UpdatedAt = &s.UpdatedAt
+		}
+		out.Workloads = append(out.Workloads, view)
+	}
+	return out, nil
+}
+
+// SetWorkloadEnabled flips the persisted enable flag. An unknown workload is
+// rejected: the admin console must not invent catalog entries.
+func (a *Admin) SetWorkloadEnabled(ctx context.Context, name string, enabled bool) error {
+	if a.catalog == nil || a.catalog.ByName(name) == nil {
+		return domain.ErrInvalidInput
+	}
+	return a.settings.SetEnabled(ctx, name, enabled, a.now())
+}
+
+// AdminSettingsView is the read-only cluster configuration the Settings page
+// shows. The token is never included; it is revealed only through
+// RevealWorkerToken, which audits.
+type AdminSettingsView struct {
+	PublicURL string `json:"public_url"`
+	Addr      string `json:"addr"`
+	DataDir   string `json:"data_dir"`
+	DBEngine  string `json:"db_engine"`
+	Binary    string `json:"binary"`
+}
+
+func (a *Admin) Settings() AdminSettingsView {
+	return AdminSettingsView{
+		PublicURL: a.node.PublicURL,
+		Addr:      a.node.Addr,
+		DataDir:   a.node.DataDir,
+		DBEngine:  a.node.DBEngine,
+		Binary:    a.node.Binary,
+	}
+}
+
+// RevealWorkerToken returns the shared worker token for the Settings page and
+// records the reveal in the audit log. It must only be called for an admin
+// session.
+func (a *Admin) RevealWorkerToken(ctx context.Context, actor string) string {
+	token := a.revealToken(ctx, actor)
+	if a.audit != nil {
+		a.audit(ctx, "worker token revealed", "by "+actor)
+	}
+	if a.log != nil {
+		a.log.Warn("admin console revealed the worker token", "actor", actor)
+	}
+	return token
+}

coordinator/internal/usecase/admin_test.go

@@ -0,0 +1,338 @@
+package usecase
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/domain"
+	"github.com/emil28092005/SciMesh/coordinator/internal/workloads"
+)
+
+type fakeAdminRead struct {
+	jobs       []domain.Job
+	taskCounts map[uuid.UUID]map[string]int
+	sizes      map[string]int64
+	byDay      map[string]int
+	byWorkload map[string]int
+	completed  int64
+	failed     int64
+	avg        float64
+	dbSize     int64
+}
+
+func (f *fakeAdminRead) ListJobsPaginated(ctx context.Context, status string, limit, offset int) ([]domain.Job, int, error) {
+	var out []domain.Job
+	for _, j := range f.jobs {
+		if status == "" || string(j.Status) == status {
+			out = append(out, j)
+		}
+	}
+	total := len(out)
+	if offset >= len(out) {
+		return nil, total, nil
+	}
+	if offset+limit < len(out) {
+		out = out[offset : offset+limit]
+	} else {
+		out = out[offset:]
+	}
+	return out, total, nil
+}
+
+func (f *fakeAdminRead) CountJobsByStatus(ctx context.Context) (map[string]int, error) {
+	out := map[string]int{}
+	for _, j := range f.jobs {
+		out[string(j.Status)]++
+	}
+	return out, nil
+}
+
+func (f *fakeAdminRead) TaskCountsByJobs(ctx context.Context, jobIDs []uuid.UUID) (map[uuid.UUID]map[string]int, error) {
+	return f.taskCounts, nil
+}
+
+func (f *fakeAdminRead) JobCountsByDay(ctx context.Context, since time.Time) (map[string]int, error) {
+	return f.byDay, nil
+}
+func (f *fakeAdminRead) JobCountsByWorkload(ctx context.Context) (map[string]int, error) {
+	return f.byWorkload, nil
+}
+func (f *fakeAdminRead) TaskStats(ctx context.Context) (int64, int64, float64, error) {
+	return f.completed, f.failed, f.avg, nil
+}
+func (f *fakeAdminRead) ArtifactSizeByKind(ctx context.Context) (map[string]int64, error) {
+	return f.sizes, nil
+}
+func (f *fakeAdminRead) DatabaseSizeBytes(ctx context.Context) (int64, error) { return f.dbSize, nil }
+
+type fakeUIRead struct {
+	UIReadRepository // embedded: only ListWorkers is exercised
+	workers          []domain.Worker
+}
+
+type fakeSettings struct {
+	WorkloadSettingsRepository // embedded: only the methods below are exercised
+	overrides                  map[string]bool
+}
+
+func (f *fakeSettings) GetEnabled(ctx context.Context, workload string) (bool, error) {
+	if enabled, ok := f.overrides[workload]; ok {
+		return enabled, nil
+	}
+	return true, nil
+}
+
+func (f *fakeSettings) List(ctx context.Context) ([]WorkloadSetting, error) {
+	out := make([]WorkloadSetting, 0, len(f.overrides))
+	for name, enabled := range f.overrides {
+		out = append(out, WorkloadSetting{Workload: name, Enabled: enabled, UpdatedAt: time.Now()})
+	}
+	return out, nil
+}
+
+func (f *fakeSettings) SetEnabled(ctx context.Context, workload string, enabled bool, now time.Time) error {
+	if f.overrides == nil {
+		f.overrides = map[string]bool{}
+	}
+	f.overrides[workload] = enabled
+	return nil
+}
+
+func (f *fakeUIRead) ListWorkers(ctx context.Context, limit int) ([]domain.Worker, error) {
+	return f.workers, nil
+}
+
+func adminFixture() *Admin {
+	return NewAdmin(
+		&fakeAdminRead{},
+		&fakeUIRead{},
+		nil, // workers repo
+		&fakeSettings{},
+		nil, // catalog
+		AdminNodeInfo{
+			Version: "1.1.0-alpha.1", StartedAt: time.Unix(1_000_000, 0).UTC(),
+			Binary: "/usr/local/bin/coordinator", Addr: ":8080", DataDir: "/var/lib/scimesh",
+			DBEngine: "sqlite", PublicURL: "http://192.168.1.10:8080", Userservice: "http://127.0.0.1:41273",
+		},
+		func(context.Context) error { return nil },
+		func() time.Time { return time.Unix(1_000_000+3600*3, 0).UTC() },
+	)
+}
+
+func TestAdminSystemAssemblesKpis(t *testing.T) {
+	owner := uuid.New()
+	a := adminFixture()
+	a.read = &fakeAdminRead{
+		jobs: []domain.Job{
+			{ID: uuid.New(), Status: domain.JobRunning, Workload: "similarity-search"},
+			{ID: uuid.New(), Status: domain.JobPending, Workload: "similarity-search", OwnerID: &owner},
+			{ID: uuid.New(), Status: domain.JobCompleted, Workload: "molwt-filter"},
+		},
+		sizes:  map[string]int64{"input": 1 << 20, "shard": 2 << 20},
+		dbSize: 34 << 20,
+	}
+	a.uiRead = &fakeUIRead{workers: []domain.Worker{
+		{Status: domain.WorkerOnline},
+		{Status: domain.WorkerBusy},
+		{Status: domain.WorkerOffline},
+	}}
+
+	v, err := a.System(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if v.Version != "1.1.0-alpha.1" {
+		t.Errorf("version = %q", v.Version)
+	}
+	if v.ActiveJobs != 2 || v.WaitingJobs != 1 || v.RunningJobs != 1 {
+		t.Errorf("jobs: active=%d waiting=%d running=%d, want 2/1/1", v.ActiveJobs, v.WaitingJobs, v.RunningJobs)
+	}
+	if v.WorkersOnline != 2 || v.WorkersBusy != 1 || v.WorkersTotal != 3 {
+		t.Errorf("workers: online=%d busy=%d total=%d, want 2/1/3", v.WorkersOnline, v.WorkersBusy, v.WorkersTotal)
+	}
+	if v.UptimeSeconds != 10800 {
+		t.Errorf("uptime = %d, want 10800", v.UptimeSeconds)
+	}
+	if v.Storage.DatasetsBytes != 1<<20 || v.Storage.ArtifactsBytes != 2<<20 || v.Storage.DatabaseBytes != 34<<20 {
+		t.Errorf("storage = %+v", v.Storage)
+	}
+	if v.Health.Database != "connected" || v.Health.Userservice != "embedded" || v.Health.Reducer != "idle" {
+		t.Errorf("health = %+v", v.Health)
+	}
+	if v.Node.Binary != "/usr/local/bin/coordinator" || v.Node.DBEngine != "sqlite" {
+		t.Errorf("node = %+v", v.Node)
+	}
+}
+
+func TestAdminSystemReportsUnhealthyDatabase(t *testing.T) {
+	a := adminFixture()
+	a.ready = func(context.Context) error { return errors.New("connection refused") }
+	v, err := a.System(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if v.Health.Database != "error" {
+		t.Errorf("database health = %q, want error", v.Health.Database)
+	}
+}
+
+func TestAdminJobsDerivesStatusAndResolvesOwners(t *testing.T) {
+	jobID := uuid.New()
+	owner := uuid.New()
+	a := adminFixture()
+	a.read = &fakeAdminRead{
+		jobs: []domain.Job{{ID: jobID, Status: domain.JobPending, Workload: "similarity-graph", OwnerID: &owner, CreatedAt: time.Unix(100, 0)}},
+		taskCounts: map[uuid.UUID]map[string]int{
+			jobID: {"completed": 5, "failed": 1, "running": 2},
+		},
+	}
+
+	view, err := a.Jobs(context.Background(), "", 1, 20, map[uuid.UUID]string{owner: "alice@lab.org"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(view.Jobs) != 1 {
+		t.Fatalf("jobs = %d, want 1", len(view.Jobs))
+	}
+	card := view.Jobs[0]
+	if card.Owner != "alice@lab.org" || card.OwnerID != owner.String() {
+		t.Errorf("owner = %q (%s)", card.Owner, card.OwnerID)
+	}
+	if card.Total != 8 || card.Completed != 5 || card.Failed != 1 {
+		t.Errorf("progress: total=%d completed=%d failed=%d", card.Total, card.Completed, card.Failed)
+	}
+	if card.Status != "running" {
+		t.Errorf("derived status = %q, want running (5 completed / 8 with 1 failed)", card.Status)
+	}
+	if view.Counts["pending"] != 1 {
+		t.Errorf("counts = %v", view.Counts)
+	}
+}
+
+func TestAdminJobsFallsBackWithoutOwners(t *testing.T) {
+	jobID := uuid.New()
+	a := adminFixture()
+	a.read = &fakeAdminRead{jobs: []domain.Job{{ID: jobID, Status: domain.JobPending, Workload: "x", CreatedAt: time.Unix(100, 0)}}}
+	view, err := a.Jobs(context.Background(), "", 1, 20, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if view.Jobs[0].Owner != "cluster token" {
+		t.Errorf("owner fallback = %q, want cluster token", view.Jobs[0].Owner)
+	}
+}
+
+func TestAdminMetricsBuckets(t *testing.T) {
+	now := time.Unix(1_000_000+3600*3, 0).UTC()
+	since := now.Add(-6 * 24 * time.Hour).Truncate(24 * time.Hour)
+	day := func(offset int) string { return since.Add(time.Duration(offset) * 24 * time.Hour).Format("2006-01-02") }
+	a := adminFixture()
+	a.read = &fakeAdminRead{
+		byDay:      map[string]int{day(1): 1, day(6): 4},
+		byWorkload: map[string]int{"molwt-filter": 1, "similarity-search": 5},
+		completed:  100, failed: 4, avg: 2.5,
+	}
+	v, err := a.Metrics(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(v.JobsByDay) != 7 || v.JobsLast7Days != 5 {
+		t.Errorf("by day: %d entries, total %d (want 7 / 5)", len(v.JobsByDay), v.JobsLast7Days)
+	}
+	if v.JobsByDay[6].Count != 4 || v.JobsByDay[1].Count != 1 {
+		t.Errorf("by day = %+v", v.JobsByDay)
+	}
+	if v.JobsByWorkload[0].Workload != "similarity-search" || v.JobsByWorkload[0].Count != 5 {
+		t.Errorf("by workload = %+v", v.JobsByWorkload)
+	}
+	if v.FailureRate != 4.0/104.0 || v.AvgShardSeconds != 2.5 {
+		t.Errorf("rate=%.4f avg=%.2f", v.FailureRate, v.AvgShardSeconds)
+	}
+}
+
+type fakeWorkerRepo struct {
+	WorkerRepository // embedded: only SetTrust is exercised
+}
+
+func (f *fakeWorkerRepo) SetTrust(ctx context.Context, id uuid.UUID, trust domain.WorkerTrust) error {
+	return nil
+}
+
+func TestAdminWorkersAndTrust(t *testing.T) {
+	owner := uuid.New()
+	a := adminFixture()
+	a.uiRead = &fakeUIRead{workers: []domain.Worker{
+		{ID: uuid.New(), Name: "lab-node-01", Status: domain.WorkerBusy, TrustLevel: domain.WorkerTrusted, Capabilities: []string{"similarity-search"}},
+		{ID: uuid.New(), Name: "emil-laptop", Status: domain.WorkerOnline, TrustLevel: domain.WorkerUntrusted, OwnerID: &owner},
+	}}
+	view, err := a.Workers(context.Background(), map[uuid.UUID]string{owner: "alice@lab.org"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(view.Workers) != 2 {
+		t.Fatalf("workers = %d, want 2", len(view.Workers))
+	}
+	if view.Workers[0].Trust != "trusted" || view.Workers[1].Trust != "untrusted" {
+		t.Errorf("trust flags wrong: %+v", view.Workers)
+	}
+	if view.Workers[1].Owner != "alice@lab.org" {
+		t.Errorf("owner = %q, want alice@lab.org", view.Workers[1].Owner)
+	}
+}
+
+func TestAdminSetTrust(t *testing.T) {
+	called := false
+	a := adminFixture()
+	a.workers = &fakeWorkerRepo{}
+	_ = called
+	if err := a.SetTrust(context.Background(), uuid.New(), false); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestAdminWorkloadsWithOverrides(t *testing.T) {
+	catalog, err := workloads.Load()
+	if err != nil {
+		t.Fatal(err)
+	}
+	a := adminFixture()
+	a.catalog = catalog
+	a.settings = &fakeSettings{overrides: map[string]bool{"molwt-filter": false}}
+	view, err := a.Workloads(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	found := false
+	for _, w := range view.Workloads {
+		if w.Name == "molwt-filter" {
+			found = true
+			if w.Enabled || w.DefaultOn {
+				t.Errorf("molwt-filter: enabled=%v default_on=%v, want disabled override", w.Enabled, w.DefaultOn)
+			}
+		}
+		if w.Name == "similarity-search" && !w.Enabled {
+			t.Error("similarity-search must stay enabled (no override)")
+		}
+	}
+	if !found {
+		t.Error("molwt-filter missing from the catalog view")
+	}
+	if err := a.SetWorkloadEnabled(context.Background(), "similarity-search", false); err != nil {
+		t.Fatal(err)
+	}
+	if err := a.SetWorkloadEnabled(context.Background(), "nope", false); err == nil {
+		t.Error("unknown workload must be rejected")
+	}
+}
+
+func TestAdminRevealToken(t *testing.T) {
+	a := adminFixture()
+	a.node.WorkerToken = func() string { return "sm_live_secret" }
+	if got := a.RevealWorkerToken(context.Background(), "admin:user"); got != "sm_live_secret" {
+		t.Errorf("token = %q", got)
+	}
+}

coordinator/internal/usecase/ports.go

@@ -94,6 +94,9 @@ type WorkerRepository interface {
 	// MarkStaleOffline flips every worker last seen before cutoff to offline and
 	// reports how many changed.
 	MarkStaleOffline(ctx context.Context, cutoff time.Time) (int64, error)
+	// SetTrust reclassifies a worker's trust level (trusted/untrusted). Returns
+	// ErrNotFound when the id is unknown.
+	SetTrust(ctx context.Context, id uuid.UUID, trust domain.WorkerTrust) error
 }
 
 // ArtifactRepository persists artifact metadata. The bytes live in a BlobStore;
@@ -131,6 +134,26 @@ type Clock interface {
 	Now() time.Time
 }
 
+// WorkloadSetting is one persisted enable/disable override from the admin
+// console. A workload with no row in the store is enabled by default.
+type WorkloadSetting struct {
+	Workload  string    `json:"workload"`
+	Enabled   bool      `json:"enabled"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+// WorkloadSettingsRepository persists the admin enable/disable overrides on
+// top of the embedded workload catalog.
+type WorkloadSettingsRepository interface {
+	// GetEnabled reports whether the workload is enabled. True when the
+	// workload has no override row (catalog default).
+	GetEnabled(ctx context.Context, workload string) (bool, error)
+	// List returns every override row, newest update first.
+	List(ctx context.Context) ([]WorkloadSetting, error)
+	// SetEnabled upserts the override.
+	SetEnabled(ctx context.Context, workload string, enabled bool, now time.Time) error
+}
+
 // ErrNotImplemented marks scaffold code with no body yet. Unlike the errors in
 // domain, it describes the state of this codebase, not a business rule.
 var ErrNotImplemented = errors.New("not implemented")

coordinator/internal/usecase/upload.go

@@ -24,17 +24,27 @@ type SubmitDataset struct {
 	clk         Clock
 	maxAttempts int
 	catalog     *workloads.Catalog
+	settings    WorkloadSettingsRepository
 }
 
 func NewSubmitDataset(blobs BlobStore, artifacts ArtifactRepository, jobs JobRepository,
-	tasks TaskRepository, tx TxManager, clk Clock, maxAttempts int, catalog *workloads.Catalog) *SubmitDataset {
-	return &SubmitDataset{blobs: blobs, artifacts: artifacts, jobs: jobs, tasks: tasks, tx: tx, clk: clk, maxAttempts: maxAttempts, catalog: catalog}
+	tasks TaskRepository, tx TxManager, clk Clock, maxAttempts int, catalog *workloads.Catalog, settings WorkloadSettingsRepository) *SubmitDataset {
+	return &SubmitDataset{blobs: blobs, artifacts: artifacts, jobs: jobs, tasks: tasks, tx: tx, clk: clk, maxAttempts: maxAttempts, catalog: catalog, settings: settings}
 }
 
 func (uc *SubmitDataset) Execute(ctx context.Context, in SubmitDatasetInput) (SubmitDatasetResult, error) {
 	if err := validateUploadedWorkload(uc.catalog, in.Workload, in.Parameters); err != nil {
 		return SubmitDatasetResult{}, err
 	}
+	if uc.settings != nil {
+		enabled, err := uc.settings.GetEnabled(ctx, in.Workload)
+		if err != nil {
+			return SubmitDatasetResult{}, err
+		}
+		if !enabled {
+			return SubmitDatasetResult{}, domain.ErrWorkloadDisabled
+		}
+	}
 	if uc.maxAttempts < 1 {
 		return SubmitDatasetResult{}, domain.ErrInvalidInput
 	}

coordinator/internal/usecase/usecase_test.go

@@ -42,6 +42,7 @@ type harness struct {
 	blobs       *memstore.BlobStore
 	clk         *memstore.Clock
 	taskResults *memstore.TaskResultRepo
+	settings    *memSettings
 
 	createJob   *usecase.CreateJob
 	submit      *usecase.SubmitDataset
@@ -70,10 +71,11 @@ func newHarness() *harness {
 		blobs:       memstore.NewBlobStore(),
 		clk:         memstore.NewClock(time.Date(2026, 7, 21, 12, 0, 0, 0, time.UTC)),
 		taskResults: memstore.NewTaskResultRepo(),
+		settings:    newMemSettings(),
 	}
 	tx := memstore.Tx{}
 	h.createJob = usecase.NewCreateJob(h.jobs, h.tasks, tx, h.clk)
-	h.submit = usecase.NewSubmitDataset(h.blobs, h.arts, h.jobs, h.tasks, tx, h.clk, 3, testCatalog())
+	h.submit = usecase.NewSubmitDataset(h.blobs, h.arts, h.jobs, h.tasks, tx, h.clk, 3, testCatalog(), h.settings)
 	h.claim = usecase.NewClaimTask(h.tasks, h.jobs, h.work, tx, h.clk, lease, testCatalog())
 	h.renew = usecase.NewRenewLease(h.tasks, h.work, tx, h.clk, lease)
 	h.complete = usecase.NewCompleteTask(h.tasks, h.jobs, h.arts, h.work, h.taskResults, tx, h.clk, 2, testCatalog())
@@ -935,3 +937,46 @@ func TestFinalLeaseExpiryPersistsFailedJobAndCannotBeCancelled(t *testing.T) {
 		t.Errorf("cancel terminal lease failure = %v, want ErrJobNotCancellable", err)
 	}
 }
+
+// memSettings is an in-memory WorkloadSettingsRepository for tests.
+type memSettings struct {
+	overrides map[string]bool
+}
+
+func newMemSettings() *memSettings { return &memSettings{overrides: map[string]bool{}} }
+
+func (m *memSettings) GetEnabled(ctx context.Context, workload string) (bool, error) {
+	if enabled, ok := m.overrides[workload]; ok {
+		return enabled, nil
+	}
+	return true, nil
+}
+
+func (m *memSettings) List(ctx context.Context) ([]usecase.WorkloadSetting, error) { return nil, nil }
+
+func (m *memSettings) SetEnabled(ctx context.Context, workload string, enabled bool, now time.Time) error {
+	m.overrides[workload] = enabled
+	return nil
+}
+
+func TestSubmitDatasetRejectsDisabledWorkload(t *testing.T) {
+	h := newHarness()
+	h.settings.SetEnabled(ctx, "molwt-filter", false, h.clk.Now())
+	_, err := h.submit.Execute(ctx, usecase.SubmitDatasetInput{
+		Workload: "molwt-filter", Parameters: map[string]any{"min_molwt": 100, "max_molwt": 600},
+		RowsPerShard: 2, Filename: "m.tsv", ContentType: "text/tab-separated-values",
+		Body: strings.NewReader("smiles\nCC\n"),
+	})
+	if !errors.Is(err, domain.ErrWorkloadDisabled) {
+		t.Fatalf("err = %v, want ErrWorkloadDisabled", err)
+	}
+	// Re-enabling accepts the same submit.
+	h.settings.SetEnabled(ctx, "molwt-filter", true, h.clk.Now())
+	if _, err := h.submit.Execute(ctx, usecase.SubmitDatasetInput{
+		Workload: "molwt-filter", Parameters: map[string]any{"min_molwt": 100, "max_molwt": 600},
+		RowsPerShard: 2, Filename: "m.tsv", ContentType: "text/tab-separated-values",
+		Body: strings.NewReader("chembl_id\tcanonical_smiles\nA\tCC\n"),
+	}); err != nil {
+		t.Fatalf("submit after re-enable: %v", err)
+	}
+}

coordinator/internal/userservice/embedded.go

@@ -51,15 +51,18 @@ func Serve(ctx context.Context, cfg Config) (string, func() error, error) {
 	issuer := auth.NewIssuer(cfg.JWTSecret, 24*time.Hour, clock.Now)
 
 	uc := usershttp.UseCases{
-		Register:          usecase.NewRegister(users, hasher, clock),
-		Login:             usecase.NewLogin(users, hasher, issuer),
-		SetVerified:       usecase.NewSetVerified(users),
-		SetRole:           usecase.NewSetRole(users),
-		CreateWorkerKey:   usecase.NewCreateWorkerKey(workerKeys, clock),
-		ListWorkerKeys:    usecase.NewListWorkerKeys(workerKeys),
-		RevokeWorkerKey:   usecase.NewRevokeWorkerKey(workerKeys),
-		ExchangeWorkerKey: usecase.NewExchangeWorkerKey(workerKeys, users, issuer, 24*time.Hour),
-		Users:             users,
+		Register:             usecase.NewRegister(users, hasher, clock),
+		Login:                usecase.NewLogin(users, hasher, issuer),
+		SetVerified:          usecase.NewSetVerified(users),
+		SetRole:              usecase.NewSetRole(users),
+		CreateWorkerKey:      usecase.NewCreateWorkerKey(workerKeys, clock),
+		ListWorkerKeys:       usecase.NewListWorkerKeys(workerKeys),
+		ListWorkerKeysAll:    usecase.NewListWorkerKeysAll(workerKeys),
+		RevokeWorkerKey:      usecase.NewRevokeWorkerKey(workerKeys),
+		RevokeWorkerKeyAdmin: usecase.NewRevokeWorkerKeyAdmin(workerKeys),
+		ExchangeWorkerKey:    usecase.NewExchangeWorkerKey(workerKeys, users, issuer, 24*time.Hour),
+		ListUsers:            usecase.NewListUsers(users),
+		Users:                users,
 	}
 
 	if cfg.AdminEmail != "" && cfg.AdminPassword != "" {
@@ -77,10 +80,10 @@ func Serve(ctx context.Context, cfg Config) (string, func() error, error) {
 	handler := usershttp.NewServer(cfg.Log, uc, issuer)
 	handler = http.TimeoutHandler(handler, 15*time.Second, `{"error":"request timeout"}`)
 
-	// A fixed loopback port lets the coordinator's proxy reuse its config
-	// unchanged; collisions are unlikely (no other process binds 18081 on a
-	// fresh machine) and fail loudly.
-	listener, err := (&net.ListenConfig{}).Listen(ctx, "tcp", "127.0.0.1:18081")
+	// Bind an ephemeral loopback port so a second serve instance can never
+	// collide with the first; the coordinator's proxy uses the returned
+	// address and needs no fixed-port assumption.
+	listener, err := (&net.ListenConfig{}).Listen(ctx, "tcp", "127.0.0.1:0")
 	if err != nil {
 		_ = db.Close()
 		return "", nil, fmt.Errorf("listen for embedded userservice: %w", err)

coordinator/internal/userservice/memstore/memstore.go

@@ -4,6 +4,7 @@ package memstore
 
 import (
 	"context"
+	"sort"
 	"sync"
 	"time"
 
@@ -84,7 +85,105 @@ func (r *UserRepo) SetRole(_ context.Context, id uuid.UUID, role domain.Role) er
 	return nil
 }
 
+// ListUsers returns every account, oldest first. It copies, so callers cannot
+// corrupt the store through the returned slice.
+func (r *UserRepo) ListUsers(_ context.Context) ([]*domain.User, error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	users := make([]*domain.User, 0, len(r.byID))
+	for _, u := range r.byID {
+		copy := u
+		users = append(users, &copy)
+	}
+	sort.Slice(users, func(i, j int) bool { return users[i].CreatedAt.Before(users[j].CreatedAt) })
+	return users, nil
+}
+
 // Clock is a fixed usecase.Clock for deterministic tests.
 type Clock struct{ T time.Time }
 
 func (c Clock) Now() time.Time { return c.T }
+
+// WorkerKeyRepo is an in-memory usecase.WorkerKeyRepository.
+type WorkerKeyRepo struct {
+	mu   sync.Mutex
+	keys map[uuid.UUID]*domain.WorkerKey
+}
+
+func NewWorkerKeyRepo() *WorkerKeyRepo {
+	return &WorkerKeyRepo{keys: map[uuid.UUID]*domain.WorkerKey{}}
+}
+
+func (r *WorkerKeyRepo) Insert(_ context.Context, k *domain.WorkerKey) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.keys[k.ID] = k
+	return nil
+}
+
+func (r *WorkerKeyRepo) ListByUser(_ context.Context, userID uuid.UUID) ([]*domain.WorkerKey, error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	var out []*domain.WorkerKey
+	for _, k := range r.keys {
+		if k.UserID == userID && !k.Revoked() {
+			out = append(out, k)
+		}
+	}
+	return out, nil
+}
+
+func (r *WorkerKeyRepo) ListAll(_ context.Context) ([]*domain.WorkerKey, error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	out := make([]*domain.WorkerKey, 0, len(r.keys))
+	for _, k := range r.keys {
+		out = append(out, k)
+	}
+	return out, nil
+}
+
+func (r *WorkerKeyRepo) GetActiveByHash(_ context.Context, tokenHash string) (*domain.WorkerKey, error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	for _, k := range r.keys {
+		if k.TokenHash == tokenHash && !k.Revoked() {
+			return k, nil
+		}
+	}
+	return nil, usecase.ErrWorkerKeyNotFound
+}
+
+func (r *WorkerKeyRepo) Revoke(_ context.Context, id, userID uuid.UUID) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	k, ok := r.keys[id]
+	if !ok || k.UserID != userID || k.Revoked() {
+		return usecase.ErrWorkerKeyNotFound
+	}
+	now := time.Now()
+	k.RevokedAt = &now
+	return nil
+}
+
+func (r *WorkerKeyRepo) RevokeAny(_ context.Context, id uuid.UUID) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	k, ok := r.keys[id]
+	if !ok || k.Revoked() {
+		return usecase.ErrWorkerKeyNotFound
+	}
+	now := time.Now()
+	k.RevokedAt = &now
+	return nil
+}
+
+func (r *WorkerKeyRepo) TouchLastUsed(_ context.Context, id uuid.UUID) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	if k, ok := r.keys[id]; ok {
+		now := time.Now()
+		k.LastUsedAt = &now
+	}
+	return nil
+}

coordinator/internal/userservice/storage/sqlite/sqlite.go

@@ -93,6 +93,24 @@ func (r *UserRepo) SetRole(ctx context.Context, id uuid.UUID, role domain.Role)
 	return rowsAffectedOrNotFound(res, usecase.ErrUserNotFound)
 }
 
+// ListUsers returns every account, oldest first.
+func (r *UserRepo) ListUsers(ctx context.Context) ([]*domain.User, error) {
+	rows, err := r.db.QueryContext(ctx, "SELECT "+userColumns+" FROM users ORDER BY created_at ASC, id ASC")
+	if err != nil {
+		return nil, err
+	}
+	defer func() { _ = rows.Close() }()
+	var users []*domain.User
+	for rows.Next() {
+		user, err := scanUser(rows)
+		if err != nil {
+			return nil, err
+		}
+		users = append(users, user)
+	}
+	return users, rows.Err()
+}
+
 const workerKeyColumns = `id, user_id, name, token_hash, prefix, created_at, last_used_at, revoked_at`
 
 func scanWorkerKey(row interface{ Scan(dest ...any) error }) (*domain.WorkerKey, error) {
@@ -154,6 +172,25 @@ func (r *WorkerKeyRepo) ListByUser(ctx context.Context, userID uuid.UUID) ([]*do
 	return keys, rows.Err()
 }
 
+// ListAll returns every key, revoked included, newest first. Admin-only.
+func (r *WorkerKeyRepo) ListAll(ctx context.Context) ([]*domain.WorkerKey, error) {
+	rows, err := r.db.QueryContext(ctx,
+		"SELECT "+workerKeyColumns+" FROM worker_keys ORDER BY created_at DESC, id DESC")
+	if err != nil {
+		return nil, err
+	}
+	defer func() { _ = rows.Close() }()
+	var keys []*domain.WorkerKey
+	for rows.Next() {
+		key, err := scanWorkerKey(rows)
+		if err != nil {
+			return nil, err
+		}
+		keys = append(keys, key)
+	}
+	return keys, rows.Err()
+}
+
 func (r *WorkerKeyRepo) GetActiveByHash(ctx context.Context, tokenHash string) (*domain.WorkerKey, error) {
 	row := r.db.QueryRowContext(ctx,
 		"SELECT "+workerKeyColumns+" FROM worker_keys WHERE token_hash = ? AND revoked_at IS NULL",
@@ -172,6 +209,17 @@ func (r *WorkerKeyRepo) Revoke(ctx context.Context, id, userID uuid.UUID) error
 	return rowsAffectedOrNotFound(res, usecase.ErrWorkerKeyNotFound)
 }
 
+// RevokeAny retires a key by id regardless of its owner.
+func (r *WorkerKeyRepo) RevokeAny(ctx context.Context, id uuid.UUID) error {
+	res, err := r.db.ExecContext(ctx,
+		"UPDATE worker_keys SET revoked_at = ? WHERE id = ? AND revoked_at IS NULL",
+		time.Now().UnixNano(), id.String())
+	if err != nil {
+		return err
+	}
+	return rowsAffectedOrNotFound(res, usecase.ErrWorkerKeyNotFound)
+}
+
 func (r *WorkerKeyRepo) TouchLastUsed(ctx context.Context, id uuid.UUID) error {
 	_, err := r.db.ExecContext(ctx,
 		"UPDATE worker_keys SET last_used_at = ? WHERE id = ?",

coordinator/internal/userservice/transport/http/dto.go

@@ -79,6 +79,27 @@ type workerKeysResponse struct {
 	WorkerKeys []workerKeyResponse `json:"worker_keys"`
 }
 
+// adminWorkerKeyResponse extends the public view with the owning user and the
+// revocation state, both needed by the coordinator admin console.
+type adminWorkerKeyResponse struct {
+	workerKeyResponse
+	UserID    string `json:"user_id"`
+	RevokedAt string `json:"revoked_at,omitempty"`
+}
+
+func toAdminWorkerKeyResponse(k *domain.WorkerKey) adminWorkerKeyResponse {
+	resp := adminWorkerKeyResponse{workerKeyResponse: toWorkerKeyResponse(k), UserID: k.UserID.String()}
+	if k.RevokedAt != nil {
+		resp.RevokedAt = k.RevokedAt.UTC().Format(time.RFC3339)
+	}
+	return resp
+}
+
+// usersResponse is the admin list of accounts, password hashes excluded.
+type usersResponse struct {
+	Users []userResponse `json:"users"`
+}
+
 func toWorkerKeyResponse(k *domain.WorkerKey) workerKeyResponse {
 	resp := workerKeyResponse{
 		ID:        k.ID.String(),

coordinator/internal/userservice/transport/http/handlers.go

@@ -14,16 +14,19 @@ import (
 
 // Handlers holds the use cases each endpoint drives.
 type Handlers struct {
-	register          *usecase.Register
-	login             *usecase.Login
-	setVerified       *usecase.SetVerified
-	setRole           *usecase.SetRole
-	createWorkerKey   *usecase.CreateWorkerKey
-	listWorkerKeys    *usecase.ListWorkerKeys
-	revokeWorkerKey   *usecase.RevokeWorkerKey
-	exchangeWorkerKey *usecase.ExchangeWorkerKey
-	users             usecase.UserRepository
-	log               *slog.Logger
+	register             *usecase.Register
+	login                *usecase.Login
+	setVerified          *usecase.SetVerified
+	setRole              *usecase.SetRole
+	createWorkerKey      *usecase.CreateWorkerKey
+	listWorkerKeys       *usecase.ListWorkerKeys
+	listWorkerKeysAll    *usecase.ListWorkerKeysAll
+	revokeWorkerKey      *usecase.RevokeWorkerKey
+	revokeWorkerKeyAdmin *usecase.RevokeWorkerKeyAdmin
+	exchangeWorkerKey    *usecase.ExchangeWorkerKey
+	listUsers            *usecase.ListUsers
+	users                usecase.UserRepository
+	log                  *slog.Logger
 }
 
 // handleHealth is an unauthenticated liveness probe for the container and load
@@ -173,15 +176,42 @@ func (h *Handlers) handleListWorkerKeys(w http.ResponseWriter, r *http.Request)
 	writeJSON(w, http.StatusOK, workerKeysResponse{WorkerKeys: out})
 }
 
+// handleListWorkerKeysAll returns every key in the service — revoked included,
+// with the owning user id — for the coordinator admin console. Admin-only.
+func (h *Handlers) handleListWorkerKeysAll(w http.ResponseWriter, r *http.Request) {
+	keys, err := h.listWorkerKeysAll.Execute(r.Context())
+	if err != nil {
+		writeError(w, r, h.log, err)
+		return
+	}
+	out := make([]adminWorkerKeyResponse, 0, len(keys))
+	for _, k := range keys {
+		out = append(out, toAdminWorkerKeyResponse(k))
+	}
+	writeJSON(w, http.StatusOK, struct {
+		WorkerKeys []adminWorkerKeyResponse `json:"worker_keys"`
+	}{WorkerKeys: out})
+}
+
+// handleListUsers returns every account for the coordinator admin console.
+// Password hashes never leave the service: only the public projection is sent.
+func (h *Handlers) handleListUsers(w http.ResponseWriter, r *http.Request) {
+	users, err := h.listUsers.Execute(r.Context())
+	if err != nil {
+		writeError(w, r, h.log, err)
+		return
+	}
+	out := make([]userResponse, 0, len(users))
+	for _, u := range users {
+		out = append(out, toUserResponse(u))
+	}
+	writeJSON(w, http.StatusOK, usersResponse{Users: out})
+}
+
 // handleRevokeWorkerKey retires one of the caller's keys. The repository scopes
 // the delete to the owner, so a mismatched id is a clean 404, not another user's
 // key.
 func (h *Handlers) handleRevokeWorkerKey(w http.ResponseWriter, r *http.Request) {
-	userID, ok := userIDFrom(r.Context())
-	if !ok {
-		unauthorized(w, r)
-		return
-	}
 	keyID, err := uuid.Parse(r.PathValue("id"))
 	if err != nil {
 		writeJSON(w, http.StatusBadRequest, errorResponse{
@@ -190,6 +220,20 @@ func (h *Handlers) handleRevokeWorkerKey(w http.ResponseWriter, r *http.Request)
 		})
 		return
 	}
+	// An admin may revoke any key; a plain user only their own.
+	if role, ok := r.Context().Value(roleKey).(domain.Role); ok && role == domain.RoleAdmin {
+		if err := h.revokeWorkerKeyAdmin.Execute(r.Context(), keyID); err != nil {
+			writeError(w, r, h.log, err)
+			return
+		}
+		w.WriteHeader(http.StatusNoContent)
+		return
+	}
+	userID, ok := userIDFrom(r.Context())
+	if !ok {
+		unauthorized(w, r)
+		return
+	}
 	if err := h.revokeWorkerKey.Execute(r.Context(), userID, keyID); err != nil {
 		writeError(w, r, h.log, err)
 		return

coordinator/internal/userservice/transport/http/server.go

@@ -14,31 +14,37 @@ import (
 
 // UseCases bundles the application services the handlers drive.
 type UseCases struct {
-	Register          *usecase.Register
-	Login             *usecase.Login
-	SetVerified       *usecase.SetVerified
-	SetRole           *usecase.SetRole
-	CreateWorkerKey   *usecase.CreateWorkerKey
-	ListWorkerKeys    *usecase.ListWorkerKeys
-	RevokeWorkerKey   *usecase.RevokeWorkerKey
-	ExchangeWorkerKey *usecase.ExchangeWorkerKey
-	Users             usecase.UserRepository
+	Register             *usecase.Register
+	Login                *usecase.Login
+	SetVerified          *usecase.SetVerified
+	SetRole              *usecase.SetRole
+	CreateWorkerKey      *usecase.CreateWorkerKey
+	ListWorkerKeys       *usecase.ListWorkerKeys
+	ListWorkerKeysAll    *usecase.ListWorkerKeysAll
+	RevokeWorkerKey      *usecase.RevokeWorkerKey
+	RevokeWorkerKeyAdmin *usecase.RevokeWorkerKeyAdmin
+	ExchangeWorkerKey    *usecase.ExchangeWorkerKey
+	ListUsers            *usecase.ListUsers
+	Users                usecase.UserRepository
 }
 
 // NewServer wires the routes and the middleware stack and returns the handler.
 // The issuer verifies tokens for the JWT-protected routes.
 func NewServer(log *slog.Logger, uc UseCases, issuer auth.Issuer) http.Handler {
 	h := &Handlers{
-		register:          uc.Register,
-		login:             uc.Login,
-		setVerified:       uc.SetVerified,
-		setRole:           uc.SetRole,
-		createWorkerKey:   uc.CreateWorkerKey,
-		listWorkerKeys:    uc.ListWorkerKeys,
-		revokeWorkerKey:   uc.RevokeWorkerKey,
-		exchangeWorkerKey: uc.ExchangeWorkerKey,
-		users:             uc.Users,
-		log:               log,
+		register:             uc.Register,
+		login:                uc.Login,
+		setVerified:          uc.SetVerified,
+		setRole:              uc.SetRole,
+		createWorkerKey:      uc.CreateWorkerKey,
+		listWorkerKeys:       uc.ListWorkerKeys,
+		listWorkerKeysAll:    uc.ListWorkerKeysAll,
+		revokeWorkerKey:      uc.RevokeWorkerKey,
+		revokeWorkerKeyAdmin: uc.RevokeWorkerKeyAdmin,
+		exchangeWorkerKey:    uc.ExchangeWorkerKey,
+		listUsers:            uc.ListUsers,
+		users:                uc.Users,
+		log:                  log,
 	}
 
 	mux := http.NewServeMux()
@@ -68,6 +74,12 @@ func NewServer(log *slog.Logger, uc UseCases, issuer auth.Issuer) http.Handler {
 	mux.Handle("POST /users/{id}/demote",
 		chain(h.handleSetRole(domain.RoleUser), withJWT(issuer), withAdmin))
 
+	// Admin console: lists of every account and every worker key, and the key
+	// revoke path the admin console calls (the same DELETE endpoint already
+	// lets an admin revoke any key).
+	mux.Handle("GET /users", chain(http.HandlerFunc(h.handleListUsers), withJWT(issuer), withAdmin))
+	mux.Handle("GET /worker-keys/all", chain(http.HandlerFunc(h.handleListWorkerKeysAll), withJWT(issuer), withAdmin))
+
 	// Outermost first: every request gets an ID and an access-log line.
 	return chain(mux, withRequestID, withAccessLog(log))
 }

coordinator/internal/userservice/transport/http/server_test.go

@@ -25,17 +25,25 @@ const secret = "server-test-secret-32-bytes-long!!!!"
 
 func newTestServer() http.Handler {
 	users := memstore.NewUserRepo()
+	keys := memstore.NewWorkerKeyRepo()
 	hasher := auth.NewHasher(4)
 	clk := memstore.Clock{T: time.Date(2026, 7, 26, 0, 0, 0, 0, time.UTC)}
 	// Real clock for the issuer so tokens are valid at verification time.
 	issuer := auth.NewIssuer(secret, time.Hour, nil)
 
 	uc := apihttp.UseCases{
-		Register:    usecase.NewRegister(users, hasher, clk),
-		Login:       usecase.NewLogin(users, hasher, issuer),
-		SetVerified: usecase.NewSetVerified(users),
-		SetRole:     usecase.NewSetRole(users),
-		Users:       users,
+		Register:             usecase.NewRegister(users, hasher, clk),
+		Login:                usecase.NewLogin(users, hasher, issuer),
+		SetVerified:          usecase.NewSetVerified(users),
+		SetRole:              usecase.NewSetRole(users),
+		CreateWorkerKey:      usecase.NewCreateWorkerKey(keys, clk),
+		ListWorkerKeys:       usecase.NewListWorkerKeys(keys),
+		ListWorkerKeysAll:    usecase.NewListWorkerKeysAll(keys),
+		RevokeWorkerKey:      usecase.NewRevokeWorkerKey(keys),
+		RevokeWorkerKeyAdmin: usecase.NewRevokeWorkerKeyAdmin(keys),
+		ExchangeWorkerKey:    usecase.NewExchangeWorkerKey(keys, users, issuer, time.Hour),
+		ListUsers:            usecase.NewListUsers(users),
+		Users:                users,
 	}
 	log := slog.New(slog.NewTextHandler(io.Discard, nil))
 	return apihttp.NewServer(log, uc, issuer)
@@ -216,10 +224,16 @@ func TestMeInternalError(t *testing.T) {
 }
 
 // mintToken issues a token with the package secret for a synthetic caller of the
-// given role — enough to drive the admin-gated endpoints.
+// given role — enough to drive the admin-gated endpoints. userID defaults to a
+// fresh random id; pass one to act as an existing account.
 func mintToken(t *testing.T, role domain.Role) string {
 	t.Helper()
-	token, err := auth.NewIssuer(secret, time.Hour, nil).Issue(&domain.User{ID: uuid.New(), Role: role})
+	return mintTokenFor(t, role, uuid.New())
+}
+
+func mintTokenFor(t *testing.T, role domain.Role, userID uuid.UUID) string {
+	t.Helper()
+	token, err := auth.NewIssuer(secret, time.Hour, nil).Issue(&domain.User{ID: userID, Role: role})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -370,3 +384,98 @@ func TestUnverifyRevokes(t *testing.T) {
 		t.Error("verified should be false after unverify")
 	}
 }
+
+func TestAdminListsUsersAndKeys(t *testing.T) {
+	h := newTestServer()
+	userID, _ := uuid.Parse(registerUser(t, h, "listed@example.com"))
+	userToken := mintTokenFor(t, domain.RoleUser, userID)
+	// Mint a worker key as the plain user.
+	keyRec := do(t, h, http.MethodPost, "/worker-keys", userToken, map[string]string{"name": "lab-node"})
+	if keyRec.Code != http.StatusCreated {
+		t.Fatalf("create key: got %d, body %s", keyRec.Code, keyRec.Body)
+	}
+	var created struct {
+		ID string `json:"id"`
+	}
+	_ = json.Unmarshal(keyRec.Body.Bytes(), &created)
+
+	// Admin lists users: emails present, password hashes absent.
+	rec := do(t, h, http.MethodGet, "/users", mintToken(t, domain.RoleAdmin), nil)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("list users: got %d, body %s", rec.Code, rec.Body)
+	}
+	var users struct {
+		Users []struct {
+			Email        string `json:"email"`
+			Role         string `json:"role"`
+			PasswordHash string `json:"password_hash"`
+		} `json:"users"`
+	}
+	if err := json.Unmarshal(rec.Body.Bytes(), &users); err != nil {
+		t.Fatal(err)
+	}
+	found := false
+	for _, u := range users.Users {
+		if u.PasswordHash != "" {
+			t.Error("password hash leaked through the admin users list")
+		}
+		if u.Email == "listed@example.com" {
+			found = true
+		}
+	}
+	if !found {
+		t.Error("listed user missing from the admin list")
+	}
+
+	// Admin lists all keys: the owner is attached, no secret.
+	rec = do(t, h, http.MethodGet, "/worker-keys/all", mintToken(t, domain.RoleAdmin), nil)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("list all keys: got %d", rec.Code)
+	}
+	var keys struct {
+		WorkerKeys []struct {
+			ID     string `json:"id"`
+			UserID string `json:"user_id"`
+			Name   string `json:"name"`
+		} `json:"worker_keys"`
+	}
+	if err := json.Unmarshal(rec.Body.Bytes(), &keys); err != nil {
+		t.Fatal(err)
+	}
+	if len(keys.WorkerKeys) != 1 || keys.WorkerKeys[0].UserID != userID.String() {
+		t.Errorf("all keys = %+v, want the one key owned by %s", keys.WorkerKeys, userID)
+	}
+
+	// Plain users cannot see either list.
+	for _, path := range []string{"/users", "/worker-keys/all"} {
+		if rec := do(t, h, http.MethodGet, path, mintToken(t, domain.RoleUser), nil); rec.Code != http.StatusForbidden {
+			t.Errorf("%s as user: got %d, want 403", path, rec.Code)
+		}
+	}
+
+	// An admin revokes a key that belongs to another user; the plain owner of
+	// that key could not (it would be a 404, scoped to their own keys).
+	// The owner of the key revokes it themselves: 204.
+	if rec := do(t, h, http.MethodDelete, "/worker-keys/"+created.ID, userToken, nil); rec.Code != http.StatusNoContent {
+		t.Errorf("user revoke own key: got %d, want 204", rec.Code)
+	}
+	// Another plain user cannot revoke it: scoped to their own keys, so a
+	// mismatch reads as 404.
+	otherID, _ := uuid.Parse(registerUser(t, h, "other@example.com"))
+	if rec := do(t, h, http.MethodDelete, "/worker-keys/"+created.ID, mintTokenFor(t, domain.RoleUser, otherID), nil); rec.Code != http.StatusNotFound {
+		t.Errorf("other user revoke: got %d, want 404", rec.Code)
+	}
+	// An admin revokes a key that belongs to someone else: 204.
+	keyRec = do(t, h, http.MethodPost, "/worker-keys", userToken, map[string]string{"name": "lab-node-2"})
+	var second struct {
+		ID string `json:"id"`
+	}
+	_ = json.Unmarshal(keyRec.Body.Bytes(), &second)
+	if rec := do(t, h, http.MethodDelete, "/worker-keys/"+second.ID, mintToken(t, domain.RoleAdmin), nil); rec.Code != http.StatusNoContent {
+		t.Errorf("admin revoke other's key: got %d, want 204", rec.Code)
+	}
+	// Admin cannot revoke an unknown key.
+	if rec := do(t, h, http.MethodDelete, "/worker-keys/"+uuid.NewString(), mintToken(t, domain.RoleAdmin), nil); rec.Code != http.StatusNotFound {
+		t.Errorf("admin revoke unknown key: got %d, want 404", rec.Code)
+	}
+}

coordinator/internal/userservice/usecase/errorpaths_test.go

@@ -35,6 +35,7 @@ func (s stubRepo) SetVerified(context.Context, uuid.UUID, bool) error {
 func (s stubRepo) SetRole(context.Context, uuid.UUID, domain.Role) error {
 	return usecase.ErrUserNotFound
 }
+func (s stubRepo) ListUsers(context.Context) ([]*domain.User, error) { return nil, nil }
 
 type stubHasher struct {
 	hashErr    error

coordinator/internal/userservice/usecase/ports.go

@@ -28,6 +28,10 @@ type UserRepository interface {
 	// SetRole changes a user's role, returning ErrUserNotFound if no such user
 	// exists.
 	SetRole(ctx context.Context, id uuid.UUID, role domain.Role) error
+	// ListUsers returns every account, oldest first. Admin-only: used by the
+	// coordinator admin console; the response must never carry password hashes
+	// (the caller projects the entity).
+	ListUsers(ctx context.Context) ([]*domain.User, error)
 }
 
 // WorkerKeyRepository persists and looks up the long-lived worker keys a user
@@ -38,12 +42,18 @@ type WorkerKeyRepository interface {
 	Insert(ctx context.Context, k *domain.WorkerKey) error
 	// ListByUser returns a user's live (non-revoked) keys, newest first.
 	ListByUser(ctx context.Context, userID uuid.UUID) ([]*domain.WorkerKey, error)
+	// ListAll returns every key (revoked included), newest first. Admin-only:
+	// backs the coordinator admin console's key table.
+	ListAll(ctx context.Context) ([]*domain.WorkerKey, error)
 	// GetActiveByHash returns the non-revoked key with the given hash, or
 	// ErrWorkerKeyNotFound.
 	GetActiveByHash(ctx context.Context, tokenHash string) (*domain.WorkerKey, error)
 	// Revoke retires a key the user owns, returning ErrWorkerKeyNotFound when no
 	// live key with that id belongs to the user.
 	Revoke(ctx context.Context, id, userID uuid.UUID) error
+	// RevokeAny retires a key by id regardless of its owner. Admin-only; the
+	// coordinator admin console uses it to cut a key immediately.
+	RevokeAny(ctx context.Context, id uuid.UUID) error
 	// TouchLastUsed records a successful exchange. Best-effort: a failure here
 	// must not fail the exchange itself.
 	TouchLastUsed(ctx context.Context, id uuid.UUID) error

coordinator/internal/userservice/usecase/users.go

@@ -0,0 +1,21 @@
+package usecase
+
+import (
+	"context"
+
+	"github.com/emil28092005/SciMesh/coordinator/internal/userservice/domain"
+)
+
+// ListUsers returns every account for the coordinator admin console. The
+// handler must project the entities so password hashes never leave the service.
+type ListUsers struct {
+	users UserRepository
+}
+
+func NewListUsers(users UserRepository) *ListUsers {
+	return &ListUsers{users: users}
+}
+
+func (uc *ListUsers) Execute(ctx context.Context) ([]*domain.User, error) {
+	return uc.users.ListUsers(ctx)
+}

coordinator/internal/userservice/usecase/workerkey.go

@@ -47,6 +47,34 @@ func (uc *ListWorkerKeys) Execute(ctx context.Context, userID uuid.UUID) ([]*dom
 	return uc.keys.ListByUser(ctx, userID)
 }
 
+// ListWorkerKeysAll returns every key in the service, revoked included, for
+// the coordinator admin console. Admin-only.
+type ListWorkerKeysAll struct {
+	keys WorkerKeyRepository
+}
+
+func NewListWorkerKeysAll(keys WorkerKeyRepository) *ListWorkerKeysAll {
+	return &ListWorkerKeysAll{keys: keys}
+}
+
+func (uc *ListWorkerKeysAll) Execute(ctx context.Context) ([]*domain.WorkerKey, error) {
+	return uc.keys.ListAll(ctx)
+}
+
+// RevokeWorkerKeyAdmin retires any key, regardless of owner. Admin-only; used
+// by the coordinator admin console when a key must be cut immediately.
+type RevokeWorkerKeyAdmin struct {
+	keys WorkerKeyRepository
+}
+
+func NewRevokeWorkerKeyAdmin(keys WorkerKeyRepository) *RevokeWorkerKeyAdmin {
+	return &RevokeWorkerKeyAdmin{keys: keys}
+}
+
+func (uc *RevokeWorkerKeyAdmin) Execute(ctx context.Context, id uuid.UUID) error {
+	return uc.keys.RevokeAny(ctx, id)
+}
+
 // RevokeWorkerKey retires one of the caller's keys.
 type RevokeWorkerKey struct {
 	keys WorkerKeyRepository

coordinator/internal/userservice/usecase/workerkey_test.go

@@ -64,6 +64,24 @@ func (r *fakeKeyRepo) TouchLastUsed(_ context.Context, id uuid.UUID) error {
 	return nil
 }
 
+func (r *fakeKeyRepo) ListAll(_ context.Context) ([]*domain.WorkerKey, error) {
+	out := make([]*domain.WorkerKey, 0, len(r.byID))
+	for _, k := range r.byID {
+		out = append(out, k)
+	}
+	return out, nil
+}
+
+func (r *fakeKeyRepo) RevokeAny(_ context.Context, id uuid.UUID) error {
+	k, ok := r.byID[id]
+	if !ok || k.Revoked() {
+		return usecase.ErrWorkerKeyNotFound
+	}
+	now := time.Now()
+	k.RevokedAt = &now
+	return nil
+}
+
 func newKeyFixtures(t *testing.T) (*usecase.CreateWorkerKey, *usecase.ExchangeWorkerKey, *usecase.RevokeWorkerKey, *usecase.ListWorkerKeys, *fakeKeyRepo, *domain.User) {
 	t.Helper()
 	users := memstore.NewUserRepo()

coordinator/internal/workloads/catalog.go

@@ -176,6 +176,12 @@ func (c *Catalog) Enabled() []*Workload {
 	return result
 }
 
+// Items returns every workload in the catalog, sorted by name (the same
+// ordering as Enabled). The caller must not mutate the entries.
+func (c *Catalog) Items() []*Workload {
+	return c.workloads
+}
+
 // ByName returns the workload with the given name, or nil.
 func (c *Catalog) ByName(name string) *Workload {
 	for _, workload := range c.workloads {

docs/ui-admin-worker-plan.md

@@ -0,0 +1,181 @@
+# План реализации: Coordinator Admin UI и Worker Setup UI
+
+> Статус: **реализовано (M1–M3), E2E проверено**. Визуал утверждён — мокапы:
+> [`ui-mockups/coordinator-admin.html`](ui-mockups/coordinator-admin.html),
+> [`ui-mockups/worker-setup.html`](ui-mockups/worker-setup.html).
+> Два UI живут в **разных бинарниках**: админка кластера — в `coordinator`
+> (`/ui/admin`), визард установки воркера — в `worker-agent`
+> (`worker-agent setup`, локально на 127.0.0.1).
+
+## 1. Цель
+
+1. **Coordinator Admin UI** — консоль админа распределённого кластера:
+   System, Jobs, Workers, Users & keys, Workloads, Metrics, Settings.
+   Реальные данные, никакой симуляции; только роль `admin`.
+2. **Worker Setup UI** — локальный визард в бинарнике `worker-agent` для
+   машины, на которой стоит только воркер: подключение (URL + токен/ключ),
+   параметры машины, preflight-проверка, запуск/остановка, статус и лог.
+
+## 2. Что уже есть в коде (фундамент)
+
+- `requireAdmin` middleware и `/ui/admin` (`internal/transport/http/ui_admin.go`)
+  — сейчас минимальная панель: прокси `promote/demote/verify/unverify` в
+  userservice.
+- Userservice (`internal/userservice/`): `POST /users/{id}/promote|demote|
+  verify|unverify` (admin), `GET/POST/DELETE /worker-keys` (per-user),
+  `POST /worker-tokens/exchange`. **Нет**: list users, list all keys.
+- `domain.Worker.TrustLevel` (`trusted`/`untrusted`) + quorum для untrusted —
+  колонка в БД есть, нужен только метод смены и отображение.
+- `domain.Job.OwnerID *uuid.UUID` — владелец джобы из JWT `sub` (может быть nil).
+- Каталог ворклоадов `internal/workloads` (embedded `workloads.json`) —
+  enable/disable кладём поверх через таблицу настроек.
+- UIReadRepo (`ui_read_repo.go` в обоих движках) — bounded read model для UI.
+- Агент целиком конфигурируется env (таблица в `mkdocs/sdk/worker-integration.md`);
+  `--config` маппится на ту же поверхность `agent.Config`.
+
+## 3. Coordinator Admin UI
+
+### 3.1 Страницы ↔ API ↔ данные
+
+Все API — JSON, под `withUISession` + `requireAdmin`, префикс
+`/ui/admin/api/`. Страница `admin.html` — оболочка из мокапа (сайдбар,
+7 разделов), данные подтягивает JS через fetch (паттерн dashboard).
+
+| Раздел | API | Данные |
+| --- | --- | --- |
+| System | `GET /system` | version, uptime, storage stats, health (db/userservice/reducer), node info |
+| Jobs | `GET /jobs?status=&page=` | пагинированный список + счётчики по статусам; owner email резолвится через userservice |
+| Workers | `GET /workers`, `POST /workers/{id}/trust` | список + trust, смена trust (trusted/untrusted) |
+| Users & keys | `GET /users`, `POST /users/{id}/role`, `GET /worker-keys`, `POST /worker-keys/{id}/revoke` | прокси/агрегация userservice |
+| Workloads | `GET /workloads`, `POST /workloads/{name}/enabled` | каталог + persisted enabled-флаг |
+| Metrics | `GET /metrics` | jobs/day (7d), jobs by workload, shards, failure rate, avg shard time |
+| Settings | `GET /settings`, `POST /token/reveal` | read-only конфиг + reveal токена (audit-лог) |
+
+### 3.2 Userservice — новые эндпоинты
+
+- `GET /users` (admin) — `id, email, role, verified, created_at`.
+- `GET /worker-keys/all` (admin) — все ключи + owner email.
+- Репозитории: `ListUsers(ctx)`, `ListWorkerKeysAll(ctx)` в `memstore` и
+  `storage/sqlite` (+ тесты). Координатор вызывает их через
+  `callUserserviceAuthed` и отдаёт в свой bounded API — браузер юзерсервис
+  не касается.
+
+### 3.3 Storage координатора — новые методы
+
+- `WorkerRepository.SetTrust(ctx, id, trust)` — оба движка + тесты.
+- `UIReadRepo.ListJobsPaginated(ctx, status string, limit, offset int)`
+  → `([]UIJob, total int, counts map[string]int)` — фильтр по статусу,
+  счётчики для табов.
+- `UIReadRepo.JobMetrics(ctx, since time.Time)` → jobs/day, by workload,
+  shards completed/failed, avg shard duration (из `tasks`).
+- `UIReadRepo.StorageStats(ctx)` → суммы байт по kind артефактов
+  (datasets/artifacts) + размер файла БД (sqlite: `page_count*page_size`;
+  postgres: `pg_database_size(current_database())`).
+- Миграция `0002_workload_settings` (оба движка):
+  `workload_settings(workload TEXT PRIMARY KEY, enabled BOOL NOT NULL,
+  updated_at TIMESTAMP NOT NULL)`; отсутствие строки = enabled (default).
+  Repo: `WorkloadSettingsRepo{ List, Set }`.
+- **Enforcement**: `SubmitDataset` отклоняет disabled-ворклоад;
+  `/ui/api/workloads` и форма new-job помечают disabled (скрываем из выбора).
+
+### 3.4 Usecase — `internal/usecase/admin.go`
+
+`AdminSystem`, `ListJobsAdmin(status,page)` (+owner emails), `ListWorkersAdmin`,
+`SetWorkerTrust`, `ListUsersAdmin`, `SetUserRole` (через userservice promote/demote),
+`ListWorkerKeysAdmin`, `RevokeWorkerKeyAdmin`, `ListWorkloadsAdmin`,
+`SetWorkloadEnabled`, `AdminMetrics`, `RevealWorkerToken` (читает
+`worker.token`/env, пишет audit-лог).
+
+### 3.5 Шаблон
+
+`templates/admin.html` заменяется на дизайн мокапа: сайдбар (Operate /
+Access / Platform), topbar с env-бейджем (serve/postgres, addr), 7 разделов,
+рендер через JS. Имя ворклоада — реальное `descriptor-batch`.
+
+## 4. Worker Setup UI (бинарник `worker-agent`)
+
+### 4.1 Новые файлы
+
+```
+coordinator/internal/agent/
+  configfile.go        # ConfigFile (json), Load/Save (0600), путь по умолчанию
+  check.go             # CheckCoordinator(url, auth) — health + версии + python/scimesh
+  setupui/
+    server.go          # локальный HTTP 127.0.0.1:12700, API + запуск/остановка
+    template.html      # визард + статус (по мокапу), go:embed
+coordinator/cmd/worker-agent/main.go   # + setup / --config / --check
+```
+
+### 4.2 CLI
+
+- `worker-agent setup [--port 12700] [--no-open]` — визард; печатает URL,
+  открывает браузер.
+- `worker-agent --config <path>` — демон из JSON-конфига; env имеет приоритет.
+- `worker-agent --check [--coordinator-url URL]` — пинг `/health`, auth
+  (token → claim-endpoint 401/200 probe или exchange для ключа), python3 +
+  `import scimesh`; exit 0/1. Используется визардом на шаге 3.
+
+### 4.3 config.json
+
+`~/.scimesh-worker/config.json` (переопределяется `WORKER_CONFIG`), права 0600:
+```json
+{
+  "coordinator_url": "http://192.168.1.10:8080",
+  "token": "…",                     // или
+  "worker_key": "…", "userservice_url": "http://…:8081",
+  "work_dir": "…", "worker_name": "emil-laptop",
+  "cpu_count": 8, "memory_mb": 16384,
+  "task_runner": ["python", "-m", "scimesh.worker.task"]
+}
+```
+
+### 4.4 API визарда (только 127.0.0.1, без auth)
+
+| Метод | Путь | Назначение |
+| --- | --- | --- |
+| GET | `/api/status` | конфиг (секрет маскирован), running (pid alive), статистика из лога, runtime |
+| POST | `/api/config` | валидация + сохранение `config.json` (0600) |
+| POST | `/api/test` | preflight: coordinator reachable, auth ok, python, scimesh |
+| POST | `/api/start` | spawn `worker-agent --config <path>` (лог → `worker.log`, pid-файл) |
+| POST | `/api/stop` | SIGTERM по pid-файлу |
+| GET | `/api/logs?tail=` | хвост `worker.log` |
+
+Статистика — парсинг лога (registered/claimed/completed/failed/heartbeat).
+Spawner — интерфейс, в тестах подменяется.
+
+## 5. Милестоуны
+
+- **M1. Admin-фундамент** — ✅ done: оболочка `admin.html` по мокапу +
+  `GET /system` (storage stats, health, node) + `GET /jobs`
+  (фильтр+пагинация+счётчики) + `GET /metrics`; тесты на sqlite, 403 для
+  не-админа.
+- **M2. Access & Platform** — ✅ done: userservice `ListUsers`/
+  `ListWorkerKeysAll` + admin revoke (mem+sqlite+http), `SetTrust` (оба
+  движка), users/keys/trust разделы, `workload_settings` (миграции 0002/
+  0014) + enforcement в `SubmitDataset` и форме, settings + audited token
+  reveal. Все секции админки на живых данных.
+- **M3. Worker Setup** — ✅ done: `configfile.go` (0600), `--config` (env
+  wins), `--check`, `setupui` (сервер на 127.0.0.1, 6 API, шаблон по мокапу),
+  тесты (roundtrip, права, check, API с fake supervisor).
+- **M4. E2E + docs** — ✅ done: браузерный E2E (admin видит реальные
+  данные; визард запустил реального воркера → `wizard-machine online` в
+  админке), обновлены `mkdocs/index.md` и `mkdocs/standalone.md`
+  (`worker-agent setup`), README, статусы CTX-19/CTX-20 в `PLAN.md`.
+
+## 6. Тестирование
+
+- **Go unit**: usecase admin (fakes + sqlite), repos обоих движков
+  (SetTrust, pagination, metrics, settings, storage stats), userservice
+  List/ListAll (mem+sqlite), HTTP permission (user → 403 на все `/ui/admin/api/*`),
+  enforcement disabled-ворклоада, configfile/check/setupui агента.
+- **Go integration (postgres)**: миграция 0002 и parity новых методов —
+  через существующий docker-хелпер, skip без docker.
+- **E2E браузер**: M4.
+
+## 7. Открытые решения (зафиксировано)
+
+- Локальный визард без аутентификации — слушает только 127.0.0.1.
+- Settings-раздел v1 — read-only + reveal токена; редактирование конфигурации
+  и prune/reset (danger zone) — v2, в UI помечены как таковые.
+- `owner` джобы: email из userservice по `OwnerID`; при nil — «cluster token».
+- Статистика воркера в визарде — из лога, без новых эндпоинтов координатора.

docs/ui-mockups/coordinator-admin.html

@@ -0,0 +1,388 @@
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>SciMesh · Coordinator Admin</title>
+<style>
+:root{
+  --bg:#0b0e13;--panel:#11151d;--panel-2:#161c27;--border:#1f2634;--border-soft:#181f2b;
+  --text:#e9ecf3;--text-2:#98a2b5;--text-3:#5d6879;
+  --accent:#5b8cff;--accent-soft:#5b8cff1f;--accent-strong:#3f6fe0;
+  --green:#3fce8a;--green-soft:#3fce8a1a;--amber:#e5b64f;--amber-soft:#e5b64f1a;--red:#f2647c;--red-soft:#f2647c1a;
+  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,monospace;
+  color-scheme:dark;
+}
+*{box-sizing:border-box;margin:0;padding:0}
+body{background:var(--bg);color:var(--text);font:14px/1.55 Inter,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
+button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
+input,select{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:8px 11px;outline:none}
+input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
+code{font-family:var(--mono);font-size:.86em}
+
+.layout{display:flex;min-height:100vh}
+
+/* ── sidebar ─────────────────────────────── */
+.sidebar{position:sticky;top:0;height:100vh;width:232px;flex:none;display:flex;flex-direction:column;background:var(--panel);border-right:1px solid var(--border-soft)}
+.brand{display:flex;align-items:center;gap:11px;padding:20px 20px 18px;border-bottom:1px solid var(--border-soft)}
+.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#5b8cff,#7c5cff);box-shadow:0 4px 14px #5b8cff40}
+.brand-mark svg{width:17px;height:17px;stroke:#fff}
+.brand-name{font-weight:700;font-size:14.5px;letter-spacing:-.01em}
+.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em}
+.nav{flex:1;overflow-y:auto;padding:14px 12px}
+.nav-label{margin:16px 10px 6px;font-size:10.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3)}
+.nav-label:first-child{margin-top:0}
+.nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:8px;color:var(--text-2);font-weight:500;text-align:left;transition:background .12s,color .12s}
+.nav-item svg{width:16px;height:16px;stroke:currentColor;flex:none}
+.nav-item:hover{background:var(--panel-2);color:var(--text)}
+.nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:600}
+.nav-item .count{margin-left:auto;font-size:11px;font-weight:600;color:var(--text-3);background:var(--panel-2);border-radius:99px;padding:1px 7px}
+.nav-item.active .count{color:var(--accent);background:#5b8cff26}
+.side-foot{padding:14px;border-top:1px solid var(--border-soft)}
+.user-chip{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;background:var(--panel-2)}
+.avatar{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#3fce8a,#2ea56c);color:#08130d;font-weight:800;font-size:12px;flex:none}
+.user-chip b{display:block;font-size:12.5px;line-height:1.25}
+.user-chip span{display:block;font-size:11px;color:var(--text-3)}
+.back-link{display:block;margin-top:9px;padding:7px 10px;color:var(--text-3);font-size:12.5px;text-decoration:none;border-radius:8px}
+.back-link:hover{color:var(--text);background:var(--panel-2)}
+
+/* ── main ────────────────────────────────── */
+.main{flex:1;min-width:0;display:flex;flex-direction:column}
+.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 32px;background:#0b0e13e6;backdrop-filter:blur(10px);border-bottom:1px solid var(--border-soft)}
+.topbar h1{font-size:17px;font-weight:700;letter-spacing:-.015em}
+.topbar p{font-size:12.5px;color:var(--text-3);margin-top:1px}
+.env-badge{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-2);border:1px solid var(--border);border-radius:99px;padding:5px 12px;background:var(--panel)}
+.env-badge i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
+.content{flex:1;padding:26px 32px 60px;max-width:1120px;width:100%;margin:0 auto}
+.page{display:none}.page.active{display:block;animation:fade .18s ease}
+@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1}}
+
+/* ── shared components ───────────────────── */
+.card{background:var(--panel);border:1px solid var(--border-soft);border-radius:13px}
+.card-pad{padding:20px}
+.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 20px;border-bottom:1px solid var(--border-soft)}
+.card-head h3{font-size:13.5px;font-weight:650}
+.card-head span{font-size:12px;color:var(--text-3)}
+.grid-kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:14px}
+.kpi{background:var(--panel);border:1px solid var(--border-soft);border-radius:13px;padding:16px 18px}
+.kpi .k-label{display:flex;align-items:center;gap:7px;font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-3)}
+.kpi .k-label svg{width:14px;height:14px;stroke:currentColor}
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+.kpi .k-sub.up{color:var(--green)}
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+.pill i{width:6px;height:6px;border-radius:50%;background:currentColor}
+.pill-success{background:var(--green-soft);color:var(--green)}
+.pill-active{background:var(--accent-soft);color:var(--accent)}
+.pill-waiting{background:#ffffff12;color:var(--text-2)}
+.pill-danger{background:var(--red-soft);color:var(--red)}
+.pill-amber{background:var(--amber-soft);color:var(--amber)}
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+.btn svg{width:14px;height:14px;stroke:currentColor}
+.btn-primary{background:var(--accent);color:#0a1222}
+.btn-primary:hover{background:var(--accent-strong);color:#fff}
+.btn-ghost{background:var(--panel-2);border-color:var(--border);color:var(--text-2)}
+.btn-ghost:hover{color:var(--text);border-color:#2a3446}
+.btn-danger{background:var(--red-soft);color:var(--red)}
+.btn-danger:hover{background:#f2647c2e}
+.btn-sm{padding:5px 10px;font-size:12px;border-radius:7px}
+table{width:100%;border-collapse:collapse}
+th{padding:10px 20px;text-align:left;font-size:11px;font-weight:650;letter-spacing:.07em;text-transform:uppercase;color:var(--text-3);border-bottom:1px solid var(--border-soft)}
+td{padding:12px 20px;border-bottom:1px solid var(--border-soft);vertical-align:middle}
+tr:last-child td{border-bottom:0}
+tbody tr{transition:background .1s}
+tbody tr:hover{background:var(--panel-2)}
+.t-main{font-weight:600;font-size:13.5px}
+.t-sub{font-size:11.5px;color:var(--text-3);font-family:var(--mono)}
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+.bar span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#5b8cff,#3fce8a)}
+.bar-label{font-size:11.5px;color:var(--text-2);font-family:var(--mono);margin-top:5px}
+.tabs{display:flex;gap:4px;padding:4px;background:var(--panel);border:1px solid var(--border-soft);border-radius:10px;width:max-content;margin-bottom:14px}
+.tab{padding:6px 13px;border-radius:7px;font-size:12.5px;font-weight:600;color:var(--text-2)}
+.tab:hover{color:var(--text)}
+.tab.active{background:var(--panel-2);color:var(--text);box-shadow:inset 0 0 0 1px var(--border)}
+.tab .n{color:var(--text-3);font-weight:500;margin-left:5px}
+.tab.active .n{color:var(--accent)}
+.section-title{margin:26px 0 12px;font-size:13px;font-weight:700;letter-spacing:-.01em;color:var(--text)}
+.section-title:first-child{margin-top:0}
+.section-note{font-size:12px;color:var(--text-3);margin:-8px 0 12px}
+.kv{display:grid;grid-template-columns:210px 1fr;row-gap:0}
+.kv dt{padding:11px 20px;font-size:12.5px;color:var(--text-3);border-bottom:1px solid var(--border-soft)}
+.kv dd{padding:11px 20px;font-size:13px;border-bottom:1px solid var(--border-soft)}
+.kv dt:last-of-type,.kv dd:last-of-type{border-bottom:0}
+.stack{display:grid;gap:14px}
+.split{display:grid;grid-template-columns:1fr 1fr;gap:14px}
+.toggle{position:relative;width:36px;height:20px;border-radius:99px;background:#ffffff17;transition:background .15s;flex:none}
+.toggle:after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#8b95a5;transition:transform .15s,background .15s}
+.toggle.on{background:var(--accent)}
+.toggle.on:after{transform:translateX(16px);background:#fff}
+.storage-bar{display:flex;height:10px;border-radius:99px;overflow:hidden;margin:14px 20px 6px}
+.storage-bar div{height:100%}
+.legend{display:flex;gap:20px;padding:10px 20px 18px;flex-wrap:wrap}
+.legend span{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--text-2)}
+.legend i{width:9px;height:9px;border-radius:3px}
+.footer-row{display:flex;align-items:center;justify-content:space-between;padding:11px 20px;font-size:12px;color:var(--text-3)}
+.pager{display:flex;gap:4px}
+.pager button{width:26px;height:26px;border-radius:7px;font-size:12px;color:var(--text-2)}
+.pager button.cur{background:var(--accent-soft);color:var(--accent);font-weight:700}
+.secret{display:flex;align-items:center;gap:10px}
+.secret code{background:var(--panel-2);border:1px solid var(--border);border-radius:7px;padding:6px 10px;letter-spacing:.08em}
+.chart{width:100%;height:auto;display:block}
+.chart-bar{fill:#2c3a52;rx:4}
+.chart-bar.hot{fill:var(--accent)}
+.chart-grid{stroke:#ffffff08}
+.chart-label{font:10px var(--mono);fill:var(--text-3)}
+.warn-strip{display:flex;gap:10px;align-items:flex-start;background:var(--amber-soft);border:1px solid #e5b64f33;border-radius:10px;padding:12px 14px;font-size:12.5px;color:#eecf8d}
+.warn-strip svg{width:15px;height:15px;stroke:var(--amber);flex:none;margin-top:1px}
+@media(max-width:960px){.sidebar{display:none}.grid-kpi,.split{grid-template-columns:1fr 1fr}}
+</style>
+</head>
+<body>
+<div class="layout">
+
+<aside class="sidebar">
+  <div class="brand">
+    <div class="brand-mark"><svg viewBox="0 0 24 24" fill="none" stroke-width="2" stroke-linecap="round"><circle cx="6" cy="6" r="2.4"/><circle cx="18" cy="7" r="2.4"/><circle cx="12" cy="17" r="2.4"/><path d="M8 7.5l7.6-1M7 8.3l3.7 6.5M16.6 9.2l-3.2 5.6"/></svg></div>
+    <div><div class="brand-name">SciMesh</div><div class="brand-sub">Coordinator Admin</div></div>
+  </div>
+  <nav class="nav" id="nav">
+    <div class="nav-label">Operate</div>
+    <button class="nav-item active" data-page="system"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><rect x="3" y="3" width="8" height="8" rx="2"/><rect x="13" y="3" width="8" height="5" rx="2"/><rect x="13" y="10" width="8" height="11" rx="2"/><rect x="3" y="13" width="8" height="8" rx="2"/></svg>System</button>
+    <button class="nav-item" data-page="jobs"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><path d="M4 6h16M4 12h16M4 18h10"/></svg>Jobs<span class="count">26</span></button>
+    <button class="nav-item" data-page="workers"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><rect x="3" y="4" width="18" height="12" rx="2"/><path d="M8 20h8M12 16v4"/></svg>Workers<span class="count">3</span></button>
+    <div class="nav-label">Access</div>
+    <button class="nav-item" data-page="users"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><circle cx="9" cy="8" r="3.2"/><path d="M3.5 19c.7-3 2.9-4.5 5.5-4.5s4.8 1.5 5.5 4.5"/><circle cx="17" cy="9" r="2.4"/><path d="M15.5 14.6c2.6.2 4.3 1.7 5 4.4"/></svg>Users &amp; keys</button>
+    <div class="nav-label">Platform</div>
+    <button class="nav-item" data-page="workloads"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><path d="M12 3l8 4.5v9L12 21l-8-4.5v-9L12 3z"/><path d="M12 12l8-4.5M12 12v9M12 12L4 7.5"/></svg>Workloads</button>
+    <button class="nav-item" data-page="metrics"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><path d="M4 19V5M4 19h16"/><path d="M8 15v-4M12 15V7M16 15v-6M20 15V9"/></svg>Metrics</button>
+    <button class="nav-item" data-page="settings"><svg viewBox="0 0 24 24" fill="none" stroke-width="1.8" stroke-linecap="round"><circle cx="12" cy="12" r="3"/><path d="M19 12a7 7 0 0 0-.1-1.2l2-1.6-2-3.4-2.4 1a7 7 0 0 0-2-1.2L14 3h-4l-.5 2.6a7 7 0 0 0-2 1.2l-2.4-1-2 3.4 2 1.6A7 7 0 0 0 5 12c0 .4 0 .8.1 1.2l-2 1.6 2 3.4 2.4-1a7 7 0 0 0 2 1.2L10 21h4l.5-2.6a7 7 0 0 0 2-1.2l2.4 1 2-3.4-2-1.6c.1-.4.1-.8.1-1.2z"/></svg>Settings</button>
+  </nav>
+  <div class="side-foot">
+    <div class="user-chip"><div class="avatar">A</div><div><b>admin@scimesh.local</b><span>admin · serve bootstrap</span></div></div>
+    <a class="back-link" href="#">← Back to control room</a>
+  </div>
+</aside>
+
+<div class="main">
+  <header class="topbar">
+    <div><h1 id="page-title">System</h1><p id="page-sub">Cluster state and node information</p></div>
+    <div class="env-badge"><i></i>serve mode · sqlite · 127.0.0.1:8080</div>
+  </header>
+  <div class="content">
+
+  <!-- ═══ SYSTEM ═══ -->
+  <section class="page active" id="page-system">
+    <div class="grid-kpi">
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M12 3l8 4.5v9L12 21l-8-4.5v-9L12 3z"/></svg>Version</div><div class="k-value">1.1.0</div><div class="k-sub">alpha.1 · linux/amd64</div></div>
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><circle cx="12" cy="12" r="9"/><path d="M12 7v5l3 3"/></svg>Uptime</div><div class="k-value">3d 14h</div><div class="k-sub">since Jul 30, 09:12</div></div>
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M4 6h16M4 12h16M4 18h10"/></svg>Active jobs</div><div class="k-value">2</div><div class="k-sub up">1 running · 1 waiting</div></div>
+      <div class="kpi"><div class="k-label"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><rect x="3" y="4" width="18" height="12" rx="2"/><path d="M8 20h8"/></svg>Workers online</div><div class="k-value">3<span style="font-size:15px;color:var(--text-3);font-weight:500"> / 5</span></div><div class="k-sub">2 busy · 1 idle</div></div>
+    </div>
+    <div class="split">
+      <div class="card">
+        <div class="card-head"><h3>Storage usage</h3><span>2.1 GB total</span></div>
+        <div class="storage-bar"><div style="width:38%;background:#5b8cff"></div><div style="width:57%;background:#7c5cff"></div><div style="width:5%;background:#3fce8a"></div></div>
+        <div class="legend">
+          <span><i style="background:#5b8cff"></i>Datasets · 812 MB</span>
+          <span><i style="background:#7c5cff"></i>Artifacts · 1.2 GB</span>
+          <span><i style="background:#3fce8a"></i>Database · 34 MB</span>
+        </div>
+      </div>
+      <div class="card">
+        <div class="card-head"><h3>Health</h3><span>all checks pass</span></div>
+        <dl class="kv">
+          <dt>Database</dt><dd><span class="pill pill-success"><i></i>Connected</span> <span style="color:var(--text-3);font-size:12px">sqlite · wal</span></dd>
+          <dt>Userservice</dt><dd><span class="pill pill-success"><i></i>Embedded</span> <span style="color:var(--text-3);font-size:12px">127.0.0.1:41273</span></dd>
+          <dt>Reducer</dt><dd><span class="pill pill-waiting"><i></i>Idle</span> <span style="color:var(--text-3);font-size:12px">last merge 12 min ago</span></dd>
+        </dl>
+      </div>
+    </div>
+    <div class="section-title">Node information</div>
+    <div class="card">
+      <dl class="kv">
+        <dt>Binary</dt><dd><code>/usr/local/bin/coordinator</code></dd>
+        <dt>Listen address</dt><dd><code>127.0.0.1:8080</code></dd>
+        <dt>Data directory</dt><dd><code>~/.scimesh</code> <span style="color:var(--text-3)">(jwt.secret · worker.token · venv)</span></dd>
+        <dt>Database engine</dt><dd>sqlite · <code>~/.scimesh/scimesh.db</code></dd>
+        <dt>Public URL</dt><dd><code>http://192.168.1.10:8080</code></dd>
+      </dl>
+    </div>
+  </section>
+
+  <!-- ═══ JOBS ═══ -->
+  <section class="page" id="page-jobs">
+    <div class="tabs">
+      <button class="tab active">All<span class="n">26</span></button>
+      <button class="tab">Running<span class="n">1</span></button>
+      <button class="tab">Waiting<span class="n">1</span></button>
+      <button class="tab">Completed<span class="n">21</span></button>
+      <button class="tab">Failed<span class="n">2</span></button>
+      <button class="tab">Cancelled<span class="n">1</span></button>
+    </div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Job</th><th>Workload</th><th>Owner</th><th>Status</th><th>Progress</th><th>Submitted</th><th></th></tr></thead>
+        <tbody>
+          <tr><td><div class="t-main">kinase-inhibitors-topk</div><div class="t-sub">7f3a…c91e</div></td><td><code style="color:var(--text-2)">similarity-search</code></td><td style="color:var(--text-2)">alice@lab.org</td><td><span class="pill pill-active"><i></i>Running</span></td><td><div class="bar"><span style="width:62%"></span></div><div class="bar-label">124 / 200 shards</div></td><td style="color:var(--text-2);font-size:12.5px">12 min ago</td><td><button class="btn btn-ghost btn-sm">Open</button></td></tr>
+          <tr><td><div class="t-main">chembl-2d-descriptors</div><div class="t-sub">a102…77bd</div></td><td><code style="color:var(--text-2)">descriptors</code></td><td style="color:var(--text-2)">bob@lab.org</td><td><span class="pill pill-waiting"><i></i>Waiting</span></td><td><div class="bar"><span style="width:0%"></span></div><div class="bar-label">0 / 48 shards</div></td><td style="color:var(--text-2);font-size:12.5px">4 min ago</td><td><button class="btn btn-ghost btn-sm">Open</button></td></tr>
+          <tr><td><div class="t-main">fragment-library-graph</div><div class="t-sub">55e0…0a3f</div></td><td><code style="color:var(--text-2)">similarity-graph</code></td><td style="color:var(--text-2)">alice@lab.org</td><td><span class="pill pill-success"><i></i>Completed</span></td><td><div class="bar"><span style="width:100%"></span></div><div class="bar-label">96 / 96 shards · 3m 41s</div></td><td style="color:var(--text-2);font-size:12.5px">1 h ago</td><td><button class="btn btn-ghost btn-sm">Open</button></td></tr>
+          <tr><td><div class="t-main">leadopt-molwt-450</div><div class="t-sub">9b41…e2c8</div></td><td><code style="color:var(--text-2)">molwt-filter</code></td><td style="color:var(--text-2)">admin@scimesh.local</td><td><span class="pill pill-success"><i></i>Completed</span></td><td><div class="bar"><span style="width:100%"></span></div><div class="bar-label">12 / 12 shards · 24s</div></td><td style="color:var(--text-2);font-size:12.5px">3 h ago</td><td><button class="btn btn-ghost btn-sm">Open</button></td></tr>
+          <tr><td><div class="t-main">hts-plate-14-search</div><div class="t-sub">c7d9…4b60</div></td><td><code style="color:var(--text-2)">similarity-search</code></td><td style="color:var(--text-2)">bob@lab.org</td><td><span class="pill pill-danger"><i></i>Failed</span></td><td><div class="bar"><span style="width:34%;background:linear-gradient(90deg,#5b8cff,#f2647c)"></span></div><div class="bar-label">18 / 53 shards · 2 failed</div></td><td style="color:var(--text-2);font-size:12.5px">yesterday</td><td><button class="btn btn-ghost btn-sm">Open</button></td></tr>
+        </tbody>
+      </table>
+      <div class="footer-row"><span>1–5 of 26 jobs</span><div class="pager"><button>‹</button><button class="cur">1</button><button>2</button><button>3</button><button>›</button></div></div>
+    </div>
+  </section>
+
+  <!-- ═══ WORKERS ═══ -->
+  <section class="page" id="page-workers">
+    <div class="section-note">Workers register themselves. Trust controls whether a machine may claim tasks from this cluster.</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Worker</th><th>Status</th><th>Capabilities</th><th>Trust</th><th>Completed</th><th>Last signal</th></tr></thead>
+        <tbody>
+          <tr><td><div class="t-main">lab-node-01</div><div class="t-sub">w-01HZZ…a4</div></td><td><span class="pill pill-active"><i></i>Busy</span></td><td><span class="cap">similarity-search</span><span class="cap">similarity-graph</span></td><td><select><option selected>Trusted</option><option>Untrusted</option></select></td><td style="font-family:var(--mono);font-size:12.5px">341</td><td style="color:var(--text-2);font-size:12.5px">4 s ago</td></tr>
+          <tr><td><div class="t-main">emil-laptop</div><div class="t-sub">w-01HZZ…9c</div></td><td><span class="pill pill-success"><i></i>Idle</span></td><td><span class="cap">similarity-search</span><span class="cap">descriptors</span><span class="cap">molwt-filter</span></td><td><select><option selected>Trusted</option><option>Untrusted</option></select></td><td style="font-family:var(--mono);font-size:12.5px">87</td><td style="color:var(--text-2);font-size:12.5px">2 s ago</td></tr>
+          <tr><td><div class="t-main">lab-node-02</div><div class="t-sub">w-01HZZ…d1</div></td><td><span class="pill pill-active"><i></i>Busy</span></td><td><span class="cap">similarity-search</span></td><td><select><option>Trusted</option><option selected>Untrusted</option></select></td><td style="font-family:var(--mono);font-size:12.5px">12</td><td style="color:var(--text-2);font-size:12.5px">6 s ago</td></tr>
+          <tr><td><div class="t-main">old-workstation</div><div class="t-sub">w-01HZX…7f</div></td><td><span class="pill pill-waiting"><i></i>Offline</span></td><td><span class="cap">similarity-search</span></td><td><select><option selected>Trusted</option><option>Untrusted</option></select></td><td style="font-family:var(--mono);font-size:12.5px">1 204</td><td style="color:var(--text-2);font-size:12.5px">2 days ago</td></tr>
+        </tbody>
+      </table>
+    </div>
+  </section>
+
+  <!-- ═══ USERS & KEYS ═══ -->
+  <section class="page" id="page-users">
+    <div class="section-title">Users</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Email</th><th>Role</th><th>Jobs</th><th>Created</th><th>Last active</th><th></th></tr></thead>
+        <tbody>
+          <tr><td><div class="t-main">admin@scimesh.local</div></td><td><span class="pill pill-amber"><i></i>admin</span></td><td style="font-family:var(--mono);font-size:12.5px">9</td><td style="color:var(--text-2);font-size:12.5px">Jul 30</td><td style="color:var(--text-2);font-size:12.5px">now</td><td><button class="btn btn-ghost btn-sm">Edit</button></td></tr>
+          <tr><td><div class="t-main">alice@lab.org</div></td><td><select><option selected>user</option><option>admin</option></select></td><td style="font-family:var(--mono);font-size:12.5px">11</td><td style="color:var(--text-2);font-size:12.5px">Jul 30</td><td style="color:var(--text-2);font-size:12.5px">12 min ago</td><td><button class="btn btn-ghost btn-sm">Edit</button></td></tr>
+          <tr><td><div class="t-main">bob@lab.org</div></td><td><select><option selected>user</option><option>admin</option></select></td><td style="font-family:var(--mono);font-size:12.5px">6</td><td style="color:var(--text-2);font-size:12.5px">Jul 31</td><td style="color:var(--text-2);font-size:12.5px">1 h ago</td><td><button class="btn btn-ghost btn-sm">Edit</button></td></tr>
+        </tbody>
+      </table>
+      <div class="footer-row"><span>3 users · bootstrap admin cannot be demoted</span><button class="btn btn-ghost btn-sm"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M12 5v14M5 12h14"/></svg>Invite user</button></div>
+    </div>
+    <div class="section-title">Worker keys</div>
+    <div class="section-note">Keys let lab machines register as workers under a user account. Served instances can also use the cluster token.</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Label</th><th>Key prefix</th><th>Owner</th><th>Created</th><th>Last used</th><th></th></tr></thead>
+        <tbody>
+          <tr><td class="t-main">lab-node-01</td><td><code style="color:var(--text-2)">smk_7f3a…</code></td><td style="color:var(--text-2)">alice@lab.org</td><td style="color:var(--text-2);font-size:12.5px">Jul 30</td><td style="color:var(--text-2);font-size:12.5px">4 s ago</td><td><button class="btn btn-danger btn-sm">Revoke</button></td></tr>
+          <tr><td class="t-main">emil-laptop</td><td><code style="color:var(--text-2)">smk_b291…</code></td><td style="color:var(--text-2)">admin@scimesh.local</td><td style="color:var(--text-2);font-size:12.5px">Jul 31</td><td style="color:var(--text-2);font-size:12.5px">2 s ago</td><td><button class="btn btn-danger btn-sm">Revoke</button></td></tr>
+          <tr><td class="t-main" style="color:var(--text-3)">old-workstation</td><td><code style="color:var(--text-3)">smk_44cd…</code></td><td style="color:var(--text-3)">alice@lab.org</td><td style="color:var(--text-3);font-size:12.5px">Jul 30</td><td style="color:var(--text-3);font-size:12.5px">2 days ago</td><td><span class="pill pill-danger"><i></i>Revoked</span></td></tr>
+        </tbody>
+      </table>
+      <div class="footer-row"><span>2 active keys</span><button class="btn btn-primary btn-sm"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M12 5v14M5 12h14"/></svg>Issue key</button></div>
+    </div>
+  </section>
+
+  <!-- ═══ WORKLOADS ═══ -->
+  <section class="page" id="page-workloads">
+    <div class="section-note">Disabled workloads are rejected at submit time and hidden from the job form. The catalog is compiled into the binary; settings persist in the database.</div>
+    <div class="card">
+      <table>
+        <thead><tr><th>Workload</th><th>Reduction</th><th>Parameters</th><th>Dataset upload</th><th>Enabled</th></tr></thead>
+        <tbody>
+          <tr><td><div class="t-main">similarity-search</div><div class="t-sub">top-k Tanimoto search over a TSV of SMILES</div></td><td><span class="pill pill-active"><i></i>top-k</span></td><td style="color:var(--text-2);font-size:12.5px">4 declared</td><td><span class="pill pill-success"><i></i>ready</span></td><td><button class="toggle on" aria-label="enabled"></button></td></tr>
+          <tr><td><div class="t-main">similarity-graph</div><div class="t-sub">threshold graph edges between all pairs</div></td><td><span class="pill pill-active"><i></i>ordered-concat</span></td><td style="color:var(--text-2);font-size:12.5px">2 declared</td><td><span class="pill pill-success"><i></i>ready</span></td><td><button class="toggle on" aria-label="enabled"></button></td></tr>
+          <tr><td><div class="t-main">descriptors</div><div class="t-sub">2D RDKit descriptors per molecule</div></td><td><span class="pill pill-active"><i></i>ordered-concat</span></td><td style="color:var(--text-2);font-size:12.5px">1 declared</td><td><span class="pill pill-success"><i></i>ready</span></td><td><button class="toggle" aria-label="disabled"></button></td></tr>
+          <tr><td><div class="t-main">molwt-filter</div><div class="t-sub">keep molecules inside a weight window</div></td><td><span class="pill pill-active"><i></i>ordered-concat</span></td><td style="color:var(--text-2);font-size:12.5px">2 declared</td><td><span class="pill pill-success"><i></i>ready</span></td><td><button class="toggle on" aria-label="enabled"></button></td></tr>
+        </tbody>
+      </table>
+    </div>
+  </section>
+
+  <!-- ═══ METRICS ═══ -->
+  <section class="page" id="page-metrics">
+    <div class="grid-kpi">
+      <div class="kpi"><div class="k-label">Jobs · 7 days</div><div class="k-value">26</div><div class="k-sub up">+8 vs previous week</div></div>
+      <div class="kpi"><div class="k-label">Shards completed</div><div class="k-value">1 644</div><div class="k-sub">across 5 workers</div></div>
+      <div class="kpi"><div class="k-label">Avg shard time</div><div class="k-value">2.3s</div><div class="k-sub up">−0.4s this week</div></div>
+      <div class="kpi"><div class="k-label">Failure rate</div><div class="k-value" style="color:var(--amber)">1.2%</div><div class="k-sub">20 failed shards</div></div>
+    </div>
+    <div class="split">
+      <div class="card">
+        <div class="card-head"><h3>Jobs per day</h3><span>last 7 days</span></div>
+        <div style="padding:16px 20px 10px">
+          <svg class="chart" viewBox="0 0 460 150">
+            <line class="chart-grid" x1="0" y1="30" x2="460" y2="30"/><line class="chart-grid" x1="0" y1="70" x2="460" y2="70"/><line class="chart-grid" x1="0" y1="110" x2="460" y2="110"/>
+            <rect class="chart-bar" x="18"  y="70"  width="44" height="60"/><rect class="chart-bar" x="82"  y="50"  width="44" height="80"/>
+            <rect class="chart-bar" x="146" y="90"  width="44" height="40"/><rect class="chart-bar" x="210" y="40"  width="44" height="90"/>
+            <rect class="chart-bar hot" x="274" y="20"  width="44" height="110"/><rect class="chart-bar" x="338" y="60"  width="44" height="70"/>
+            <rect class="chart-bar" x="402" y="80"  width="44" height="50"/>
+            <text class="chart-label" x="18"  y="145">Mon</text><text class="chart-label" x="82"  y="145">Tue</text><text class="chart-label" x="146" y="145">Wed</text>
+            <text class="chart-label" x="210" y="145">Thu</text><text class="chart-label" x="274" y="145">Fri</text><text class="chart-label" x="338" y="145">Sat</text>
+            <text class="chart-label" x="402" y="145">Sun</text>
+          </svg>
+        </div>
+      </div>
+      <div class="card">
+        <div class="card-head"><h3>Jobs by workload</h3><span>all time</span></div>
+        <dl class="kv">
+          <dt>similarity-search</dt><dd><div class="bar" style="width:100%"><span style="width:78%"></span></div></dd>
+          <dt>similarity-graph</dt><dd><div class="bar" style="width:100%"><span style="width:41%"></span></div></dd>
+          <dt>molwt-filter</dt><dd><div class="bar" style="width:100%"><span style="width:22%"></span></div></dd>
+          <dt>descriptors</dt><dd><div class="bar" style="width:100%"><span style="width:9%"></span></div></dd>
+        </dl>
+      </div>
+    </div>
+  </section>
+
+  <!-- ═══ SETTINGS ═══ -->
+  <section class="page" id="page-settings">
+    <div class="warn-strip"><svg viewBox="0 0 24 24" fill="none" stroke-width="2" stroke-linecap="round"><path d="M12 9v4M12 17h.01M10.3 3.9L2.6 17a2 2 0 0 0 1.7 3h15.4a2 2 0 0 0 1.7-3L13.7 3.9a2 2 0 0 0-3.4 0z"/></svg><div>The cluster token below authenticates <b>any</b> worker. Reveal it only on a trusted machine, and rotate it if it may have leaked.</div></div>
+    <div class="section-title">Cluster</div>
+    <div class="card">
+      <dl class="kv">
+        <dt>Worker token</dt><dd><div class="secret"><code id="tok">••••••••••••••••••••••••</code><button class="btn btn-ghost btn-sm" id="reveal">Reveal</button><button class="btn btn-ghost btn-sm">Rotate…</button></div></dd>
+        <dt>Public URL</dt><dd><input value="http://192.168.1.10:8080" style="width:320px"></dd>
+        <dt>Listen address</dt><dd><input value="127.0.0.1:8080" style="width:200px"> <span style="color:var(--text-3);font-size:12px">takes effect after restart</span></dd>
+      </dl>
+    </div>
+    <div class="section-title">Storage</div>
+    <div class="card">
+      <dl class="kv">
+        <dt>Data directory</dt><dd><code>~/.scimesh</code></dd>
+        <dt>Database engine</dt><dd><select><option selected>sqlite (embedded)</option><option>postgres (external)</option></select></dd>
+        <dt>Auto-migrate on start</dt><dd><button class="toggle on"></button></dd>
+      </dl>
+      <div class="footer-row"><span></span><button class="btn btn-primary btn-sm">Save changes</button></div>
+    </div>
+    <div class="section-title" style="color:var(--red)">Danger zone</div>
+    <div class="card" style="border-color:#f2647c33">
+      <dl class="kv">
+        <dt>Prune artifacts</dt><dd style="display:flex;justify-content:space-between;align-items:center"><span style="color:var(--text-2);font-size:12.5px">Delete results of completed jobs older than 30 days · frees ~400 MB</span><button class="btn btn-ghost btn-sm">Prune…</button></dd>
+        <dt>Reset cluster</dt><dd style="display:flex;justify-content:space-between;align-items:center"><span style="color:var(--text-2);font-size:12.5px">Drop all jobs, workers and keys. Users are kept.</span><button class="btn btn-danger btn-sm">Reset…</button></dd>
+      </dl>
+    </div>
+  </section>
+
+  </div>
+</div>
+</div>
+
+<script>
+const titles={system:['System','Cluster state and node information'],jobs:['Jobs','Every computation, filterable and paginated'],workers:['Workers','Fleet overview and trust management'],users:['Users & keys','Accounts, roles and worker keys'],workloads:['Workloads','Catalog entries and availability'],metrics:['Metrics','Throughput and reliability, last 7 days'],settings:['Settings','Cluster, storage and security']};
+document.querySelectorAll('.nav-item').forEach(btn=>btn.addEventListener('click',()=>{
+  document.querySelectorAll('.nav-item').forEach(b=>b.classList.remove('active'));
+  document.querySelectorAll('.page').forEach(p=>p.classList.remove('active'));
+  btn.classList.add('active');
+  document.getElementById('page-'+btn.dataset.page).classList.add('active');
+  const [t,s]=titles[btn.dataset.page];
+  document.getElementById('page-title').textContent=t;
+  document.getElementById('page-sub').textContent=s;
+}));
+document.querySelectorAll('.toggle').forEach(t=>t.addEventListener('click',()=>t.classList.toggle('on')));
+document.getElementById('reveal').addEventListener('click',e=>{
+  const tok=document.getElementById('tok');
+  const shown=tok.textContent.startsWith('•');
+  tok.textContent=shown?'sm_live_9f2c7ab41d06e8f3c5a7':'••••••••••••••••••••••••';
+  e.target.textContent=shown?'Hide':'Reveal';
+});
+</script>
+</body>
+</html>

docs/ui-mockups/worker-setup.html

@@ -0,0 +1,244 @@
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>SciMesh Worker · Setup</title>
+<style>
+:root{
+  --bg:#0b0e13;--panel:#11151d;--panel-2:#161c27;--border:#1f2634;--border-soft:#181f2b;
+  --text:#e9ecf3;--text-2:#98a2b5;--text-3:#5d6879;
+  --accent:#5b8cff;--accent-soft:#5b8cff1f;--accent-strong:#3f6fe0;
+  --green:#3fce8a;--green-soft:#3fce8a1a;--amber:#e5b64f;--amber-soft:#e5b64f1a;--red:#f2647c;--red-soft:#f2647c1a;
+  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,monospace;
+  color-scheme:dark;
+}
+*{box-sizing:border-box;margin:0;padding:0}
+body{background:radial-gradient(900px 500px at 50% -180px,#16233d66,transparent),var(--bg);color:var(--text);font:14px/1.55 Inter,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;min-height:100vh}
+button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
+input{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--border);border-radius:9px;padding:10px 13px;width:100%;outline:none;transition:border-color .12s,box-shadow .12s}
+input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
+input::placeholder{color:var(--text-3)}
+code{font-family:var(--mono);font-size:.86em}
+
+.shell{max-width:660px;margin:0 auto;padding:44px 22px 70px}
+.brand{display:flex;align-items:center;justify-content:center;gap:11px;margin-bottom:8px}
+.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#5b8cff,#7c5cff);box-shadow:0 4px 16px #5b8cff40}
+.brand-mark svg{width:18px;height:18px;stroke:#fff}
+.brand-name{font-weight:700;font-size:16px;letter-spacing:-.01em}
+.brand-name span{color:var(--text-3);font-weight:500}
+.tagline{text-align:center;color:var(--text-3);font-size:12.5px;margin-bottom:34px}
+.tagline code{color:var(--text-2)}
+
+/* step indicator */
+.steps{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:30px}
+.step{display:flex;flex-direction:column;align-items:center;gap:7px;width:96px}
+.step-dot{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;border:1.5px solid var(--border);background:var(--panel);color:var(--text-3);font-size:12.5px;font-weight:700;transition:all .2s}
+.step-label{font-size:11px;font-weight:600;color:var(--text-3);letter-spacing:.02em}
+.step.active .step-dot{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);box-shadow:0 0 0 4px #5b8cff14}
+.step.active .step-label{color:var(--text)}
+.step.done .step-dot{border-color:var(--green);background:var(--green-soft);color:var(--green)}
+.step.done .step-label{color:var(--text-2)}
+.step-line{flex:1;max-width:44px;height:1.5px;background:var(--border);margin:0 6px 22px;position:relative;overflow:hidden}
+.step-line.done:after{content:"";position:absolute;inset:0;background:var(--green)}
+
+.card{background:var(--panel);border:1px solid var(--border-soft);border-radius:15px;padding:26px 28px;box-shadow:0 24px 60px #0000004d}
+.card h1{font-size:18px;font-weight:700;letter-spacing:-.02em;margin-bottom:4px}
+.card .sub{color:var(--text-2);font-size:13px;margin-bottom:22px}
+.field{margin-bottom:16px}
+.field label{display:block;font-size:12px;font-weight:650;letter-spacing:.04em;text-transform:uppercase;color:var(--text-3);margin-bottom:7px}
+.field .hint{margin-top:6px;font-size:12px;color:var(--text-3)}
+.field .hint code{color:var(--text-2)}
+
+.radio-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
+.radio-card{border:1px solid var(--border);border-radius:11px;padding:13px 14px;cursor:pointer;transition:all .13s;background:var(--panel-2)}
+.radio-card:hover{border-color:#2a3446}
+.radio-card.sel{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px #5b8cff14}
+.radio-card b{display:flex;align-items:center;gap:8px;font-size:13.5px}
+.radio-card b svg{width:15px;height:15px;stroke:var(--accent)}
+.radio-card p{margin-top:4px;font-size:12px;color:var(--text-2)}
+
+.check-row{display:flex;align-items:center;gap:12px;padding:11px 14px;border:1px solid var(--border-soft);border-radius:10px;margin-bottom:9px;background:var(--panel-2)}
+.check-ic{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;flex:none}
+.check-ic svg{width:13px;height:13px;stroke-width:2.6}
+.check-ok{background:var(--green-soft)}.check-ok svg{stroke:var(--green)}
+.check-bad{background:var(--red-soft)}.check-bad svg{stroke:var(--red)}
+.check-wait{background:#ffffff10}.check-wait svg{stroke:var(--text-3)}
+.check-row b{font-size:13.5px;font-weight:600}
+.check-row span{display:block;font-size:12px;color:var(--text-3)}
+.check-row .ms{margin-left:auto;font:11.5px var(--mono);color:var(--text-3)}
+
+.actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:24px}
+.btn{display:inline-flex;align-items:center;gap:8px;border-radius:9px;padding:10px 18px;font-weight:650;font-size:13.5px;border:1px solid transparent;transition:all .13s}
+.btn svg{width:15px;height:15px;stroke:currentColor}
+.btn-primary{background:var(--accent);color:#0a1222}
+.btn-primary:hover{background:var(--accent-strong);color:#fff}
+.btn-ghost{border-color:var(--border);color:var(--text-2);background:var(--panel-2)}
+.btn-ghost:hover{color:var(--text);border-color:#2a3446}
+.btn-danger{background:var(--red-soft);color:var(--red)}
+.btn-lg{padding:12px 24px;font-size:14.5px;border-radius:10px}
+.link{color:var(--text-3);font-size:13px}
+.link:hover{color:var(--text)}
+
+/* status view */
+.status-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
+.pulse{position:relative;width:12px;height:12px;border-radius:50%;background:var(--green);flex:none}
+.pulse:after{content:"";position:absolute;inset:-5px;border-radius:50%;border:2px solid var(--green);opacity:.5;animation:ping 1.6s ease-out infinite}
+@keyframes ping{from{transform:scale(.6);opacity:.7}to{transform:scale(1.4);opacity:0}}
+.status-head h1{font-size:19px}
+.status-head .sub{font-size:12.5px;color:var(--text-3)}
+.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:18px}
+.stat{background:var(--panel-2);border:1px solid var(--border-soft);border-radius:11px;padding:12px 14px}
+.stat b{display:block;font-size:20px;font-weight:700;letter-spacing:-.02em}
+.stat span{font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-3)}
+.stat.bad b{color:var(--red)}
+.logbox{background:#0a0d12;border:1px solid var(--border-soft);border-radius:11px;padding:14px 16px;font:12px/1.7 var(--mono);color:#8fa3bf;max-height:190px;overflow-y:auto}
+.logbox .t{color:var(--text-3)}
+.logbox .ok{color:var(--green)}
+.logbox .hl{color:#c9d6ea}
+.meta-line{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
+.chip{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:99px;padding:4px 11px;font-size:12px;color:var(--text-2);background:var(--panel-2)}
+.chip svg{width:12px;height:12px;stroke:var(--text-3)}
+
+.wizard-page{display:none}.wizard-page.active{display:block;animation:fade .18s ease}
+@keyframes fade{from{opacity:0;transform:translateY(5px)}to{opacity:1}}
+.demo-toggle{position:fixed;bottom:14px;right:16px;font-size:11.5px;color:var(--text-3);background:var(--panel);border:1px solid var(--border);border-radius:99px;padding:6px 13px;opacity:.8}
+.demo-toggle:hover{color:var(--text)}
+</style>
+</head>
+<body>
+<div class="shell">
+  <div class="brand">
+    <div class="brand-mark"><svg viewBox="0 0 24 24" fill="none" stroke-width="2" stroke-linecap="round"><circle cx="6" cy="6" r="2.4"/><circle cx="18" cy="7" r="2.4"/><circle cx="12" cy="17" r="2.4"/><path d="M8 7.5l7.6-1M7 8.3l3.7 6.5M16.6 9.2l-3.2 5.6"/></svg></div>
+    <div class="brand-name">SciMesh <span>· Worker setup</span></div>
+  </div>
+  <p class="tagline">Local wizard served by <code>worker-agent setup</code> · <code>127.0.0.1:12700</code></p>
+
+  <!-- ═══ WIZARD VIEW ═══ -->
+  <div id="view-wizard">
+    <div class="steps">
+      <div class="step done" id="st1"><div class="step-dot">✓</div><div class="step-label">Connect</div></div>
+      <div class="step-line done" id="sl1"></div>
+      <div class="step active" id="st2"><div class="step-dot">2</div><div class="step-label">Machine</div></div>
+      <div class="step-line" id="sl2"></div>
+      <div class="step" id="st3"><div class="step-dot">3</div><div class="step-label">Check</div></div>
+      <div class="step-line" id="sl3"></div>
+      <div class="step" id="st4"><div class="step-dot">4</div><div class="step-label">Run</div></div>
+    </div>
+
+    <!-- step 1 (kept in DOM for the mockup; step 2 shown) -->
+    <div class="wizard-page" id="wp1">
+      <div class="card">
+        <h1>Connect to a coordinator</h1>
+        <p class="sub">The coordinator hands out work and collects results. Ask your cluster admin for its address.</p>
+        <div class="field"><label>Coordinator URL</label><input value="http://192.168.1.10:8080" placeholder="http://192.168.1.10:8080"><p class="hint">For a served instance this is the address printed by <code>coordinator serve</code>.</p></div>
+        <div class="field"><label>Authentication</label>
+          <div class="radio-grid">
+            <div class="radio-card sel"><b><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><rect x="4" y="10" width="16" height="10" rx="2"/><path d="M8 10V7a4 4 0 0 1 8 0v3"/></svg>Cluster token</b><p>Serve instances: one token for every worker.</p></div>
+            <div class="radio-card"><b><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><circle cx="8" cy="14" r="4"/><path d="M10.8 11.2L20 2M15 4l3 3"/></svg>Worker key</b><p>Shared clusters: a key tied to your account.</p></div>
+          </div>
+        </div>
+        <div class="field"><label>Token</label><input type="password" value="sm_live_9f2c7ab41d06e8f3c5a7"><p class="hint">The admin can copy it from <code>coordinator token</code> on the server.</p></div>
+        <div class="actions"><span class="link">Step 1 of 4</span><button class="btn btn-primary" onclick="goto(2)">Continue →</button></div>
+      </div>
+    </div>
+
+    <!-- step 2 -->
+    <div class="wizard-page active" id="wp2">
+      <div class="card">
+        <h1>This machine</h1>
+        <p class="sub">Where tasks run and how the machine appears in the cluster.</p>
+        <div class="field"><label>Worker name</label><input value="emil-laptop"><p class="hint">Shown in the coordinator’s worker list.</p></div>
+        <div class="field"><label>Work directory</label><input value="/home/emil/scimesh-worker"><p class="hint">Datasets and shard results live here. ~1 GB free space recommended.</p></div>
+        <div class="field"><label>Compute resources advertised</label>
+          <div class="radio-grid">
+            <div class="radio-card sel"><b>8 CPUs · 16 GB</b><p>Detected automatically.</p></div>
+            <div class="radio-card"><b>Custom…</b><p>Limit what this machine advertises.</p></div>
+          </div>
+        </div>
+        <div class="actions"><button class="btn btn-ghost" onclick="goto(1)">← Back</button><button class="btn btn-primary" onclick="goto(3)">Continue →</button></div>
+      </div>
+    </div>
+
+    <!-- step 3 -->
+    <div class="wizard-page" id="wp3">
+      <div class="card">
+        <h1>Preflight check</h1>
+        <p class="sub">Making sure this machine can reach the coordinator and run SciMesh workloads.</p>
+        <div class="check-row"><div class="check-ic check-ok"><svg viewBox="0 0 24 24" fill="none" stroke-linecap="round"><path d="M4 12l5 5L20 6"/></svg></div><div><b>Coordinator reachable</b><span>http://192.168.1.10:8080 · coordinator 1.1.0-alpha.1</span></div><span class="ms">34 ms</span></div>
+        <div class="check-row"><div class="check-ic check-ok"><svg viewBox="0 0 24 24" fill="none" stroke-linecap="round"><path d="M4 12l5 5L20 6"/></svg></div><div><b>Token accepted</b><span>authenticated as cluster worker</span></div><span class="ms">51 ms</span></div>
+        <div class="check-row"><div class="check-ic check-ok"><svg viewBox="0 0 24 24" fill="none" stroke-linecap="round"><path d="M4 12l5 5L20 6"/></svg></div><div><b>Python 3.12 found</b><span>/usr/bin/python3</span></div><span class="ms">8 ms</span></div>
+        <div class="check-row"><div class="check-ic check-bad"><svg viewBox="0 0 24 24" fill="none" stroke-linecap="round"><path d="M6 6l12 12M18 6L6 18"/></svg></div><div><b>scimesh package missing</b><span>run: pip install scimesh — or let the wizard install it</span></div><button class="btn btn-ghost" style="margin-left:auto;padding:6px 12px;font-size:12px">Install</button></div>
+        <div class="actions"><button class="btn btn-ghost" onclick="goto(2)">← Back</button><button class="btn btn-primary" onclick="goto(4)">Continue anyway →</button></div>
+      </div>
+    </div>
+
+    <!-- step 4 -->
+    <div class="wizard-page" id="wp4">
+      <div class="card" style="text-align:center;padding:40px 28px">
+        <div class="brand-mark" style="margin:0 auto 18px;width:46px;height:46px;border-radius:13px"><svg viewBox="0 0 24 24" fill="none" stroke-width="2" stroke-linecap="round" style="width:22px;height:22px"><path d="M6 4l14 8-14 8V4z"/></svg></div>
+        <h1 style="font-size:20px">Ready to join the cluster</h1>
+        <p class="sub" style="max-width:380px;margin:8px auto 26px">The wizard will save your configuration to <code>~/.scimesh-worker/config.json</code> and start the worker as a background process.</p>
+        <div class="meta-line" style="justify-content:center">
+          <span class="chip"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><circle cx="12" cy="12" r="9"/></svg>emil-laptop</span>
+          <span class="chip"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M4 6h16M4 12h16M4 18h16"/></svg>8 CPUs · 16 GB</span>
+          <span class="chip"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><path d="M12 3l8 4.5v9L12 21l-8-4.5v-9L12 3z"/></svg>4 workloads</span>
+        </div>
+        <div class="actions" style="justify-content:space-between;margin-top:30px"><button class="btn btn-ghost" onclick="goto(3)">← Back</button><button class="btn btn-primary btn-lg" onclick="showStatus()">Start worker</button></div>
+      </div>
+    </div>
+  </div>
+
+  <!-- ═══ STATUS VIEW ═══ -->
+  <div id="view-status" style="display:none">
+    <div class="card">
+      <div class="status-head">
+        <div class="pulse"></div>
+        <div><h1>emil-laptop is working</h1><div class="sub">worker id <code>w-01HZZ4T9C6</code> · registered with 192.168.1.10:8080 · up 42 min</div></div>
+        <button class="btn btn-danger" style="margin-left:auto"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><rect x="6" y="6" width="12" height="12" rx="2"/></svg>Stop</button>
+      </div>
+      <div class="stat-row">
+        <div class="stat"><b>14</b><span>claimed</span></div>
+        <div class="stat"><b>12</b><span>completed</span></div>
+        <div class="stat bad"><b>0</b><span>failed</span></div>
+        <div class="stat"><b>2.1s</b><span>avg shard</span></div>
+      </div>
+      <div class="meta-line">
+        <span class="chip">similarity-search</span><span class="chip">similarity-graph</span><span class="chip">descriptors</span><span class="chip">molwt-filter</span>
+        <span class="chip" style="margin-left:auto"><svg viewBox="0 0 24 24" fill="none" stroke-width="2"><circle cx="12" cy="12" r="9"/><path d="M12 7v5l3 3"/></svg>heartbeat 2 s ago</span>
+      </div>
+      <div class="logbox">
+        <div><span class="t">14:02:11</span> agent 1.1.0-alpha.1 · config ~/.scimesh-worker/config.json</div>
+        <div><span class="t">14:02:11</span> coordinator http://192.168.1.10:8080 · token auth</div>
+        <div><span class="t">14:02:12</span> <span class="ok">registered</span> as <span class="hl">emil-laptop</span> (w-01HZZ4T9C6)</div>
+        <div><span class="t">14:02:12</span> capabilities: similarity-search, similarity-graph, descriptors, molwt-filter</div>
+        <div><span class="t">14:03:40</span> claimed task <span class="hl">7f3a…c91e/007</span> · similarity-search</div>
+        <div><span class="t">14:03:42</span> <span class="ok">completed</span> 7f3a…c91e/007 · uploaded shard (2.1s)</div>
+        <div><span class="t">14:05:03</span> claimed task <span class="hl">7f3a…c91e/031</span> · similarity-search</div>
+        <div><span class="t">14:05:05</span> <span class="ok">completed</span> 7f3a…c91e/031 · uploaded shard (1.9s)</div>
+      </div>
+      <div class="actions"><span class="link">Configuration: <code>~/.scimesh-worker/config.json</code></span><button class="btn btn-ghost" onclick="showWizard()">Reconfigure…</button></div>
+    </div>
+  </div>
+</div>
+
+<button class="demo-toggle" onclick="toggleView()">mockup · toggle wizard / status</button>
+
+<script>
+const pages=['wp1','wp2','wp3','wp4'];
+function goto(n){
+  pages.forEach((id,i)=>document.getElementById(id).classList.toggle('active',i===n-1));
+  for(let i=1;i<=4;i++){
+    const st=document.getElementById('st'+i);
+    st.classList.toggle('done',i<n);st.classList.toggle('active',i===n);
+    st.querySelector('.step-dot').textContent=i<n?'✓':i;
+    if(i<4)document.getElementById('sl'+i).classList.toggle('done',i<n);
+  }
+}
+function showStatus(){document.getElementById('view-wizard').style.display='none';document.getElementById('view-status').style.display='block'}
+function showWizard(){document.getElementById('view-wizard').style.display='block';document.getElementById('view-status').style.display='none'}
+function toggleView(){document.getElementById('view-status').style.display==='none'?showStatus():showWizard()}
+document.querySelectorAll('.radio-grid').forEach(g=>g.querySelectorAll('.radio-card').forEach(c=>c.addEventListener('click',()=>{g.querySelectorAll('.radio-card').forEach(x=>x.classList.remove('sel'));c.classList.add('sel')})));
+</script>
+</body>
+</html>

install.ps1

@@ -9,12 +9,23 @@
 $ErrorActionPreference = "Stop"
 
 $Repo = "emil28092005/SciMesh"
+$Component = if ($env:SCIMESH_COMPONENT) { $env:SCIMESH_COMPONENT } else { "coordinator" }
 $Version = if ($env:SCIMESH_VERSION) { $env:SCIMESH_VERSION } else { "latest" }
 $InstallDir = if ($env:SCIMESH_INSTALL_DIR) {
     $env:SCIMESH_INSTALL_DIR
 } else {
     Join-Path $env:LOCALAPPDATA "SciMesh"
 }
+# Auto-start the component right after install and open its UI (the control
+# room for the coordinator, the local setup wizard for the worker). Set
+# SCIMESH_AUTO_START=0 to install only.
+$AutoStart = if ($env:SCIMESH_AUTO_START) { $env:SCIMESH_AUTO_START } else { "1" }
+
+switch ($Component) {
+    "coordinator" { $Binary = "coordinator" }
+    "worker"      { $Binary = "worker-agent" }
+    default       { throw "unknown component: $Component (use 'coordinator' or 'worker')" }
+}
 
 $Arch = switch ($env:PROCESSOR_ARCHITECTURE) {
     "AMD64" { "amd64" }
@@ -39,20 +50,53 @@ if ($Version -eq "latest") {
     }
 }
 
-$Url = "https://github.com/$Repo/releases/download/$Version/coordinator-windows-$Arch.exe"
+$Url = "https://github.com/$Repo/releases/download/$Version/$Binary-windows-$Arch.exe"
 
 New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null
-$Target = Join-Path $InstallDir "coordinator.exe"
+$Target = Join-Path $InstallDir "$Binary.exe"
 
 Write-Host "Downloading $Url"
 Invoke-WebRequest -Uri $Url -OutFile "$Target.tmp"
 Move-Item -Force "$Target.tmp" $Target
 
 Write-Host ""
-Write-Host "SciMesh installed: $Target"
+Write-Host "SciMesh $Component installed: $Target"
 & $Target --version
 Write-Host ""
-Write-Host "Start the platform (one command, everything embedded):"
-Write-Host "  $Target serve --open"
-Write-Host ""
-Write-Host "Your data lives in ~\.scimesh. The admin login is printed on first start."
+if ($Component -eq "coordinator") {
+    if ($AutoStart -eq "1") {
+        Write-Host "Starting the platform and opening the admin console in your browser..."
+        Write-Host "(stop it with Ctrl-C; it keeps your data in ~\.scimesh)"
+        Write-Host ""
+        & $Target serve --open
+    } else {
+        Write-Host "Start the platform (one command, everything embedded):"
+        Write-Host "  $Target serve --open"
+        Write-Host ""
+        Write-Host "Your data lives in ~\.scimesh. The admin login is printed on first start."
+    }
+} else {
+    if ($AutoStart -eq "1") {
+        Write-Host "Starting the local setup wizard in your browser..."
+        Write-Host "(stop it with Ctrl-C; it keeps the configuration in ~\.scimesh-worker)"
+        Write-Host ""
+        & $Target setup
+    } else {
+        Write-Host "The worker needs Python 3 with the scimesh package, then a coordinator"
+        Write-Host "to connect to. Point the local wizard at it:"
+        Write-Host ""
+        Write-Host "  $Target setup"
+        Write-Host ""
+        Write-Host "Or run it with environment variables:"
+        Write-Host ""
+        Write-Host "  set COORDINATOR_URL=http://COORDINATOR_HOST:8080"
+        Write-Host "  set WORKER_AUTH_TOKEN=<worker token from the coordinator>"
+        Write-Host "  set WORK_DIR=%USERPROFILE%\scimesh-worker"
+        Write-Host "  $Target"
+        Write-Host ""
+        Write-Host "For a coordinator started with 'coordinator serve', the worker token is"
+        Write-Host "in ~\.scimesh\worker.token on that machine. Set SCIMESH_PIP_PACKAGE to"
+        Write-Host "install scimesh into a managed venv, or install it yourself:"
+        Write-Host "  pip install scimesh"
+    }
+}

install.sh

@@ -1,18 +1,32 @@
 #!/usr/bin/env bash
-# SciMesh installer: downloads the coordinator binary for this OS/architecture
-# from the latest GitHub release and installs it locally. One command, no
-# picking from a list of files:
+# SciMesh installer: downloads a binary for this OS/architecture from the
+# newest GitHub release, installs it locally, then starts it and opens its UI
+# in the browser (SCIMESH_AUTO_START=0 installs only). One command:
 #
 #   curl -fsSL https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.sh | bash
+#   curl -fsSL https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.sh | bash -s worker
 #
-# Installed to ~/.local/bin/coordinator (Linux/macOS). Then run:
-#
-#   coordinator serve --open
+# The first form installs the coordinator (the whole platform in one binary:
+# databases, userservice, local workers) and opens the admin console. The
+# second installs a standalone worker agent that joins an existing
+# coordinator, and opens its local setup wizard. Installed to ~/.local/bin
+# (Linux/macOS) or %LOCALAPPDATA%\SciMesh (Windows).
 set -eu
 
 REPO="emil28092005/SciMesh"
+COMPONENT="${1:-coordinator}"
 VERSION="${SCIMESH_VERSION:-latest}"
 INSTALL_DIR="${SCIMESH_INSTALL_DIR:-$HOME/.local/bin}"
+# Auto-start the component right after install and open its UI (the control
+# room for the coordinator, the local setup wizard for the worker). Set
+# SCIMESH_AUTO_START=0 to install only.
+AUTO_START="${SCIMESH_AUTO_START:-1}"
+
+case "$COMPONENT" in
+  coordinator) BINARY="coordinator" ;;
+  worker)      BINARY="worker-agent" ;;
+  *) echo "unknown component: $COMPONENT (use 'coordinator' or 'worker')" >&2; exit 1 ;;
+esac
 
 case "$(uname -s)" in
   Linux)  OS="linux" ;;
@@ -41,16 +55,16 @@ if [ "$VERSION" = "latest" ]; then
 fi
 
 mkdir -p "$INSTALL_DIR"
-TARGET="$INSTALL_DIR/coordinator"
+TARGET="$INSTALL_DIR/$BINARY"
 
-URL="https://github.com/${REPO}/releases/download/${VERSION}/coordinator-${OS}-${ARCH}"
+URL="https://github.com/${REPO}/releases/download/${VERSION}/${BINARY}-${OS}-${ARCH}"
 echo "Downloading $URL"
 curl -fsSL -o "$TARGET.tmp" "$URL"
 chmod +x "$TARGET.tmp"
 mv "$TARGET.tmp" "$TARGET"
 
 echo
-echo "SciMesh installed: $TARGET"
+echo "SciMesh $COMPONENT installed: $TARGET"
 INSTALLED_VERSION=$("$TARGET" --version 2>/dev/null | awk '{print $2}')
 "$TARGET" --version
 if [ -n "$INSTALLED_VERSION" ] && [ "$INSTALLED_VERSION" != "${VERSION#v}" ]; then
@@ -60,8 +74,43 @@ if [ -n "$INSTALLED_VERSION" ] && [ "$INSTALLED_VERSION" != "${VERSION#v}" ]; th
   echo "minutes, or pin the version explicitly:"
   echo "  SCIMESH_VERSION=${VERSION} bash <(curl -fsSL https://raw.githubusercontent.com/${REPO}/main/install.sh)"
 fi
-echo
-echo "Start the platform (one command, everything embedded):"
-echo "  $TARGET serve --open"
-echo
-echo "Your data lives in ~/.scimesh. The admin login is printed on first start."
+
+if [ "$COMPONENT" = "coordinator" ]; then
+  if [ "$AUTO_START" = "1" ]; then
+    echo
+    echo "Starting the platform and opening the admin console in your browser..."
+    echo "(stop it with Ctrl-C; it keeps your data in ~/.scimesh)"
+    echo
+    exec "$TARGET" serve --open
+  fi
+  echo
+  echo "Start the platform (one command, everything embedded):"
+  echo "  $TARGET serve --open"
+  echo
+  echo "Your data lives in ~/.scimesh. The admin login is printed on first start."
+else
+  if [ "$AUTO_START" = "1" ]; then
+    echo
+    echo "Starting the local setup wizard in your browser..."
+    echo "(stop it with Ctrl-C; it keeps the configuration in ~/.scimesh-worker)"
+    echo
+    exec "$TARGET" setup
+  fi
+  echo
+  echo "The worker needs Python 3 with the scimesh package, then a coordinator"
+  echo "to connect to. Point the local wizard at it:"
+  echo
+  echo "  $TARGET setup"
+  echo
+  echo "Or run it with environment variables:"
+  echo
+  echo "  export COORDINATOR_URL=http://COORDINATOR_HOST:8080"
+  echo "  export WORKER_AUTH_TOKEN=<worker token from the coordinator>"
+  echo "  export WORK_DIR=~/scimesh-worker"
+  echo "  $TARGET"
+  echo
+  echo "For a coordinator started with 'coordinator serve', the worker token is"
+  echo "in ~/.scimesh/worker.token on that machine. Set SCIMESH_PIP_PACKAGE to"
+  echo "install scimesh into a managed venv, or install it yourself:"
+  echo "  pip install scimesh"
+fi

mkdocs.yml

@@ -47,6 +47,7 @@ markdown_extensions:
 
 nav:
   - Home: index.md
+  - Standalone setup: standalone.md
   - SDK:
       - Overview: sdk/overview.md
       - Authoring workloads: sdk/authoring-workloads.md

mkdocs/index.md

@@ -33,8 +33,10 @@ The two halves of the project:
   resource reservation, and allowlist-driven workload discovery.
 - **An operator UI** served by the coordinator: the control room, a workload
   library page, a workload-agnostic "new computation" form whose controls come
-  from each workload's own `UIElement` declarations, and this documentation
-  site at `/ui/docs/`.
+  from each workload's own `UIElement` declarations, an **admin console**
+  (`/ui/admin`) for cluster operators — system/storage/health, jobs,
+  worker trust, users and worker keys, workload enable/disable, metrics and
+  the worker token — and this documentation site at `/ui/docs/`.
 
 ## Quick start
 
@@ -44,17 +46,16 @@ local workers — is embedded in a single binary; no PostgreSQL, no Docker, no
 Python setup.
 
 ```bash
-# Linux / macOS
+# Linux / macOS — installs and opens the control room automatically
 curl -fsSL https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.sh | bash
-coordinator serve --open
 
 # Windows (PowerShell)
 powershell -ExecutionPolicy Bypass -c "irm https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.ps1 | iex"
-coordinator serve --open
 ```
 
-The first start prints the admin login (also stored under `~/.scimesh`), and
-`--open` opens the UI in the browser. `coordinator serve --workers 2`
+The installer starts the platform and opens the control room in your browser
+(set `SCIMESH_AUTO_START=0` to install only). The first start prints the admin
+login (also stored under `~/.scimesh`). `coordinator serve --workers 2`
 spawns two local workers; `SCIMESH_PIP_PACKAGE` points the managed venv at
 your scimesh wheel so scientific workloads can run.
 
@@ -90,11 +91,32 @@ curl -L -o coordinator https://github.com/emil28092005/SciMesh/releases/latest/d
 chmod +x coordinator
 ```
 
-- **worker-agent** runs anywhere with Python: it spawns
-  `python -m scimesh.worker.task`, so the machine needs the `scimesh`
-  package in a venv (`pip install scimesh`) and the usual environment:
-  `COORDINATOR_URL`, `WORKER_AUTH_TOKEN`, `WORK_DIR`. The same binary can run
-  it via `coordinator agent`.
+- **worker-agent** is installed separately and joins an existing coordinator.
+  Point its **local setup wizard** at the cluster — no need to have the
+  coordinator on this machine:
+
+  ```bash
+  curl -fsSL https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.sh | bash -s worker
+  # the installer opens the local wizard at http://127.0.0.1:12700 automatically
+  ```
+
+  The wizard collects the coordinator URL and token (or worker key), runs a
+  preflight check, saves the configuration under `~/.scimesh-worker/` and
+  starts the worker as a background process — with a live status page and log.
+  Everything can also be done by hand:
+
+  ```bash
+  export COORDINATOR_URL=http://COORDINATOR_HOST:8080
+  export WORKER_AUTH_TOKEN=<worker token from the coordinator>
+  export WORK_DIR=~/scimesh-worker
+  worker-agent
+  ```
+
+  It spawns `python -m scimesh.worker.task`, so the machine needs Python 3
+  with the `scimesh` package (`pip install scimesh`, or let the managed venv
+  do it via `SCIMESH_PIP_PACKAGE`). For a `coordinator serve` instance, the
+  worker token is in `~/.scimesh/worker.token`. On Windows set
+  `SCIMESH_COMPONENT=worker` for `install.ps1`.
 - **coordinator** needs no external services at all in its default mode:
   `coordinator serve` embeds SQLite (both databases), the userservice, and
   local workers. The `SCIMESH_DB=postgres` engine remains for cluster

mkdocs/standalone.md

@@ -0,0 +1,136 @@
+# Standalone (split) setup
+
+The single-binary `coordinator serve` mode is the default for a scientist on
+one machine. The **standalone setup** splits the platform into separate
+processes — the coordinator, the userservice, and any number of workers —
+typically on different machines, backed by PostgreSQL. This is the cluster
+deployment.
+
+```text
+Browser (operator)
+   │
+   ▼
+┌──────────────────────────────┐       ┌───────────────────────────┐
+│  coordinator  (port 8080)    │       │  userservice (port 8081)  │
+│  jobs · tasks · artifacts    │◄─────►│  users · roles · keys     │
+│  PostgreSQL DB "scimesh"     │  JWT  │  PostgreSQL DB             │
+└──────────────┬───────────────┘ secret │  "scimesh_users"          │
+               │                        └───────────────────────────┘
+               │  HTTP (workers connect out)
+               ▼
+      worker-agent × N  (COORDINATOR_URL, WORKER_AUTH_TOKEN)
+        └─ python -m scimesh.worker.task   (needs Python + scimesh)
+```
+
+Each component is a separate process; workers never touch a database — they
+only talk to the coordinator over HTTP.
+
+## What each component needs
+
+| Component | Binary | Configuration |
+| --- | --- | --- |
+| Coordinator | `coordinator` (`SCIMESH_DB=postgres`) | `DATABASE_URL`, `COORDINATOR_ADDR`, `COORDINATOR_TOKEN`, `COORDINATOR_STORAGE_DIR`, `JWT_SECRET`, `USERSERVICE_URL`, `PUBLIC_COORDINATOR_URL` |
+| Userservice | the `users/` service | `USERSERVICE_ADDR`, `DATABASE_URL` (its own DB), `JWT_SECRET` (must match the coordinator), `BOOTSTRAP_ADMIN_EMAIL` / `BOOTSTRAP_ADMIN_PASSWORD` |
+| Worker | `worker-agent` | `COORDINATOR_URL`, `WORKER_AUTH_TOKEN`, `WORK_DIR`, `TASK_RUNNER` (JSON array), `CPU_COUNT`, `MEMORY_MB` |
+
+`JWT_SECRET` is the one secret shared between the coordinator and the
+userservice: the userservice signs tokens with it, the coordinator verifies
+them. It must be at least 32 bytes and identical on both.
+
+## Option A — Docker Compose (fastest)
+
+The repository ships compose files for the whole split stack: PostgreSQL for
+both services, migrations, the coordinator, and the userservice:
+
+```bash
+cd coordinator
+JWT_SECRET='change-me-32-bytes-minimum' \
+BOOTSTRAP_ADMIN_EMAIL='root@scimesh.local' \
+BOOTSTRAP_ADMIN_PASSWORD='choose-a-strong-password' \
+  docker compose -f docker-compose.yml -f docker-compose.users.yml up -d --build
+```
+
+Then install workers on any machines with Python. The worker's own setup
+wizard walks through the rest — URL, token or worker key, work directory —
+and starts the worker for you:
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/emil28092005/SciMesh/main/install.sh | bash -s worker
+# the installer opens the local wizard at http://127.0.0.1:12700 automatically
+```
+
+Or configure by hand:
+
+```bash
+export COORDINATOR_URL=http://COORDINATOR_HOST:8080
+export WORKER_AUTH_TOKEN="$COORDINATOR_TOKEN"   # the coordinator's shared token
+export WORK_DIR=~/scimesh-worker
+worker-agent
+```
+
+## Option B — Manual binaries
+
+1. **Provision PostgreSQL** (two databases, or one server and `CREATE
+   DATABASE`):
+
+   ```bash
+   ./coordinator setup --yes \
+     --db 'postgres://scimesh:scimesh@db-host:5432/scimesh?sslmode=disable' \
+     --env-file /etc/scimesh/coordinator.env
+   ```
+
+   The wizard creates the database when missing and writes the `.env` with a
+   generated `JWT_SECRET`. The userservice needs its own database — create it
+   and apply `users/migrations` (e.g. with the migrate CLI):
+
+   ```bash
+   createdb scimesh_users
+   migrate -path users/migrations \
+     -database 'postgres://scimesh:scimesh@db-host:5432/scimesh_users?sslmode=disable' up
+   ```
+
+2. **Run the userservice** with the *same* `JWT_SECRET`:
+
+   ```bash
+   cd users && make build   # builds the binary into users/bin/
+   USERSERVICE_ADDR=':8081' \
+   DATABASE_URL='postgres://scimesh:scimesh@db-host:5432/scimesh_users?sslmode=disable' \
+   JWT_SECRET='<same secret>' \
+   BOOTSTRAP_ADMIN_EMAIL='root@scimesh.local' \
+   BOOTSTRAP_ADMIN_PASSWORD='choose-a-strong-password' \
+     ./bin/userservice
+   ```
+
+3. **Run the coordinator**:
+
+   ```bash
+   ENV_FILE=/etc/scimesh/coordinator.env ./coordinator
+   # or, without the .env:
+   SCIMESH_DB=postgres \
+   DATABASE_URL='postgres://scimesh:scimesh@db-host:5432/scimesh?sslmode=disable' \
+   COORDINATOR_ADDR=':8080' \
+   COORDINATOR_TOKEN='a-worker-token' \
+   COORDINATOR_STORAGE_DIR='/var/lib/scimesh/artifacts' \
+   JWT_SECRET='<same secret>' \
+   USERSERVICE_URL='http://127.0.0.1:8081' \
+   PUBLIC_COORDINATOR_URL='http://coordinator.example:8080' \
+     ./coordinator
+   ```
+
+   The binary applies its embedded schema migrations on startup
+   (`AUTO_MIGRATE=false` to disable when you manage them out of band).
+
+4. **Attach workers** as in Option A (or via `worker-agent setup`). The UI
+   login uses the userservice session; the workers use `COORDINATOR_TOKEN` or
+   a worker key. The coordinator's admin console (`/ui/admin`) shows the
+   whole cluster: jobs, worker fleet with trust controls, accounts and keys,
+   workload switches and metrics.
+
+## Notes
+
+- The coordinator and the userservice each keep their own PostgreSQL database
+  — different bounded contexts, deliberately not shared.
+- A worker can join by hostname or IP; only outbound HTTP from the worker to
+  the coordinator is required (no inbound firewall rules on workers).
+- For a quick all-in-one alternative, `coordinator serve` embeds all of this
+  on one machine — see the [home page](index.md).

users/Makefile

@@ -21,7 +21,8 @@ help:
 
 # --- build / run ---------------------------------------------------------
 build:
-	go build ./...
+	mkdir -p bin
+	go build -trimpath -ldflags="-s -w" -o bin/userservice ./cmd/userservice
 
 run:
 	go run ./cmd/userservice