feat: complete Phase 1-3 architecture optimization

Phase 1 - Security:
- Add AES-GCM encryption for localStorage fallback
- Enforce WSS protocol for non-localhost WebSocket connections
- Add URL sanitization to prevent XSS in markdown links

Phase 2 - Domain Reorganization:
- Create Intelligence Domain with Valtio store and caching
- Add unified intelligence-client for Rust backend integration
- Migrate from legacy agent-memory, heartbeat, reflection modules

Phase 3 - Core Optimization:
- Add virtual scrolling for ChatArea with react-window
- Implement LRU cache with TTL for intelligence operations
- Add message virtualization utilities

Additional:
- Add OpenFang compatibility test suite
- Update E2E test fixtures
- Add audit logging infrastructure
- Update project documentation and plans

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

desktop/tests/config-parser.test.ts

@@ -8,9 +8,8 @@ import { describe, it, expect } from 'vitest';
 import {
   configParser,
   ConfigParseError,
-  ConfigValidationError,
 } from '../src/lib/config-parser';
-import type { OpenFangConfig } from '../src/types/config';
+import type { OpenFangConfig, ConfigValidationError } from '../src/types/config';
 
 describe('configParser', () => {
   const validToml = `