Merge main into feat/cursor-cli-integration

Carefully merged latest changes from main branch into the Cursor CLI integration
branch. This merge brings in important improvements and fixes while preserving
all Cursor-related functionality.

Key changes from main:
- Sandbox mode security improvements and cloud storage compatibility
- Version-based settings migrations (v2 schema)
- Port configuration centralization
- System paths utilities for CLI detection
- Enhanced error handling in HttpApiClient
- Windows MCP process cleanup fixes
- New validation and build commands
- GitHub issue templates and release process improvements

Resolved conflicts in:
- apps/server/src/routes/context/routes/describe-image.ts
  (Combined Cursor provider routing with secure-fs imports)
- apps/server/src/services/auto-mode-service.ts
  (Merged failure tracking with raw output logging)
- apps/server/tests/unit/services/terminal-service.test.ts
  (Updated to async tests with systemPathExists mocking)
- libs/platform/src/index.ts
  (Combined WSL utilities with system-paths exports)
- libs/types/src/settings.ts
  (Merged DEFAULT_PHASE_MODELS with SETTINGS_VERSION constants)

All Cursor CLI integration features remain intact including:
- CursorProvider and CliProvider base class
- Phase-based model configuration
- Provider registry and factory patterns
- WSL support for Windows
- Model override UI components
- Cursor-specific settings and configurations

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

apps/ui/src/lib/electron.ts

@@ -95,7 +95,7 @@ import type {
 } from '@/types/electron';
 
 // Import HTTP API client (ES module)
-import { getHttpApiClient } from './http-api-client';
+import { getHttpApiClient, getServerUrlSync } from './http-api-client';
 
 // Feature type - Import from app-store
 import type { Feature } from '@/store/app-store';
@@ -432,6 +432,7 @@ export interface SaveImageResult {
 export interface ElectronAPI {
   ping: () => Promise<string>;
   getApiKey?: () => Promise<string | null>;
+  quit?: () => Promise<void>;
   openExternalLink: (url: string) => Promise<{ success: boolean; error?: string }>;
   openDirectory: () => Promise<DialogResult>;
   openFile: (options?: object) => Promise<DialogResult>;
@@ -710,7 +711,7 @@ export const checkServerAvailable = async (): Promise<boolean> => {
 
   serverCheckPromise = (async () => {
     try {
-      const serverUrl = import.meta.env.VITE_SERVER_URL || 'http://localhost:3008';
+      const serverUrl = import.meta.env.VITE_SERVER_URL || getServerUrlSync();
       const response = await fetch(`${serverUrl}/api/health`, {
         method: 'GET',
         signal: AbortSignal.timeout(2000),