refactor(types): comprehensive TypeScript type system improvements

Major type system refactoring and error fixes across the codebase:

**Type System Improvements:**
- Extended OpenFangStreamEvent with 'connected' and 'agents_updated' event types
- Added GatewayPong interface for WebSocket pong responses
- Added index signature to MemorySearchOptions for Record compatibility
- Fixed RawApproval interface with hand_name, run_id properties

**Gateway & Protocol Fixes:**
- Fixed performHandshake nonce handling in gateway-client.ts
- Fixed onAgentStream callback type definitions
- Fixed HandRun runId mapping to handle undefined values
- Fixed Approval mapping with proper default values

**Memory System Fixes:**
- Fixed MemoryEntry creation with required properties (lastAccessedAt, accessCount)
- Replaced getByAgent with getAll method in vector-memory.ts
- Fixed MemorySearchOptions type compatibility

**Component Fixes:**
- Fixed ReflectionLog property names (filePath→file, proposedContent→suggestedContent)
- Fixed SkillMarket suggestSkills async call arguments
- Fixed message-virtualization useRef generic type
- Fixed session-persistence messageCount type conversion

**Code Cleanup:**
- Removed unused imports and variables across multiple files
- Consolidated StoredError interface (removed duplicate)
- Deleted obsolete test files (feedbackStore.test.ts, memory-index.test.ts)

**New Features:**
- Added browser automation module (Tauri backend)
- Added Active Learning Panel component
- Added Agent Onboarding Wizard
- Added Memory Graph visualization
- Added Personality Selector
- Added Skill Market store and components

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

desktop/package.json

@@ -23,6 +23,7 @@
     "@tauri-apps/api": "^2",
     "@tauri-apps/plugin-opener": "^2",
     "clsx": "^2.1.1",
+    "date-fns": "^4.1.0",
     "framer-motion": "^12.36.0",
     "lucide-react": "^0.577.0",
     "react": "^19.1.0",
@@ -31,6 +32,7 @@
     "smol-toml": "^1.6.0",
     "tailwind-merge": "^3.5.0",
     "tweetnacl": "^1.0.3",
+    "uuid": "^11.0.0",
     "zustand": "^5.0.11"
   },
   "devDependencies": {
@@ -39,6 +41,7 @@
     "@types/react": "^19.1.8",
     "@types/react-dom": "^19.1.6",
     "@types/react-window": "^2.0.0",
+    "@types/uuid": "^10.0.0",
     "@vitejs/plugin-react": "^4.6.0",
     "autoprefixer": "^10.4.27",
     "postcss": "^8.5.8",