providers: presets for polza/openai/ollama (--provider), keys from env, gpt-5.6-luna default for polza, multimodal heuristic for cloud ids

testbed/chat.py

@@ -32,11 +32,14 @@ import sys
 from aicc.client import AICCClient
 from aicc.transport.websocket import WebSocketClientTransport
 
-from testbed.llm_agent import CHAT_MISSION, LLMController, ollama_models
+from testbed.llm_agent import (
+    CHAT_MISSION,
+    LLMController,
+    ollama_models,
+    resolve_provider,
+)
 
 DEFAULT_URL = "ws://127.0.0.1:8765"
-DEFAULT_BASE_URL = "http://localhost:11434/v1"
-DEFAULT_MODEL = "gemma4:e2b"
 
 HELP = """\
 You are talking to the capsule's brain (LLM). Type what you want, e.g.:
@@ -393,12 +396,26 @@ def main() -> int:
         help=f"bridge WebSocket URL (default {DEFAULT_URL})",
     )
     parser.add_argument(
-        "--base-url", default=DEFAULT_BASE_URL, help="OpenAI-compatible endpoint"
+        "--base-url",
+        default=None,
+        help="OpenAI-compatible endpoint (default per --provider)",
     )
     parser.add_argument(
-        "--model", default=DEFAULT_MODEL, help="model id on the endpoint"
+        "--provider",
+        choices=["polza", "openai", "ollama"],
+        default=None,
+        help="provider preset: endpoint + key from env (POLZA_API_KEY/OPENAI_API_KEY)",
+    )
+    parser.add_argument(
+        "--model",
+        default=None,
+        help="model id on the endpoint (default per provider: polza -> openai/gpt-5.6-luna)",
+    )
+    parser.add_argument(
+        "--api-key",
+        default=None,
+        help="API key (default: $POLZA_API_KEY / $OPENAI_API_KEY per provider)",
     )
-    parser.add_argument("--api-key", default="ollama", help="API key for the endpoint")
     parser.add_argument(
         "--auto-steps",
         type=int,
@@ -447,6 +464,18 @@ def main() -> int:
         help="attach a fresh camera frame every N turns (0 disables; default 3)",
     )
     args = parser.parse_args()
+    try:
+        args.base_url, args.api_key, args.model = resolve_provider(
+            provider=args.provider,
+            base_url=args.base_url,
+            api_key=args.api_key,
+            model=args.model,
+        )
+        if args.provider:
+            print(f"[chat] provider: {args.provider} -> {args.base_url}  model: {args.model}")
+    except ValueError as exc:
+        print(f"[chat] {exc}")
+        return 1
     try:
         return asyncio.run(run(args))
     except KeyboardInterrupt: