feat(rewrite): tambah application layer — port traits & use cases TypeScript

Paket @zesdex/application (apps/packages/application):
- ports: ProviderService (chat/chatStream+abort), PasswordService,
  TokenService, AuthService
- agent: AgentTurnServiceImpl (loop 50 iterasi, auto-compact 60k chars,
  adaptive max-tokens 800/1600/4096, temp 0.2/0.7, ErrorTracker,
  eksekusi tool read-only paralel terbatas mempertahankan urutan)
  + compact_messages_with_ai
- auth: OAuthUseCase (PKCE S256 + CSRF state), SessionServiceImpl
- cms: ConversationServiceImpl, MemoryServiceImpl, SettingsServiceImpl
- 11 unit test Bun (PKCE, OAuth CSRF, turn_service helper)
- tsconfig paths untuk workspace @zesdex/*

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

apps/packages/application/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "@zesdex/application",
+  "version": "1.21.2",
+  "private": true,
+  "type": "module",
+  "description": "Zesdex application layer — port traits, use cases, turn service (depends only on @zesdex/domain)",
+  "exports": {
+    ".": "./src/index.ts"
+  },
+  "scripts": {
+    "test": "bun test",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@zesdex/domain": "workspace:*"
+  },
+  "devDependencies": {
+    "@types/bun": "^1.2.0",
+    "typescript": "^5.7.0"
+  }
+}