feat(dm-dashboard): Wave 1 — auth fixes, DB schema, Open5e interfaces, AI clients

- Fix auth anti-patterns (JWT, OAuth, logout, middleware, url.origin)
- Extend DB schema with tier, npcs, counters, translations, notes, initiative
- Expand Open5e TypeScript interfaces (Monster, Spell) to full V2
- Build OpenRouter API client for FREE tier
- Build Kimi API client for PRO tier
- Add comprehensive tests for all modules

tests/setup.ts

@@ -1,14 +1,5 @@
-import "vitest";
+import { webcrypto } from 'node:crypto';
 
-Object.defineProperty(globalThis, "crypto", {
-  value: {
-    getRandomValues: (arr: Uint8Array) => {
-      for (let i = 0; i < arr.length; i++) {
-        arr[i] = Math.floor(Math.random() * 256);
-      }
-      return arr;
-    },
-    subtle: {},
-    randomUUID: () => "00000000-0000-0000-0000-000000000000",
-  },
+Object.defineProperty(globalThis, 'crypto', {
+  value: webcrypto,
 });