feat(scripts): add unified startup scripts for full stack development

Add comprehensive startup scripts for managing all ZCLAW services:

Windows (PowerShell):
- start.ps1 / start-all.ps1 - Unified service launcher
- Supports -NoBrowser, -NoGateway, -Dev, -Stop flags

Unix (Bash):
- start.sh - Cross-platform launcher for macOS/Linux

Makefile:
- make start / make start-unix
- make desktop / make desktop-build
- make setup / make test / make clean

pnpm commands:
- pnpm start - Start all services
- pnpm start:dev - Development mode with hot reload
- pnpm start:no-browser - Skip ChromeDriver
- pnpm start:no-gateway - Skip OpenFang gateway
- pnpm desktop - Start Tauri only
- pnpm chromedriver - Start ChromeDriver only

Services managed:
1. ChromeDriver (port 4444) - Browser automation
2. OpenFang Gateway (port 4200) - AI Agent runtime
3. Tauri Desktop - React + Rust frontend

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

desktop/package.json

@@ -14,10 +14,15 @@
     "prepare:tauri-tools": "node scripts/preseed-tauri-tools.mjs",
     "prepare:tauri-tools:dry-run": "node scripts/preseed-tauri-tools.mjs --dry-run",
     "tauri": "tauri",
+    "tauri:dev": "tauri dev",
+    "tauri:build": "tauri build",
     "tauri:build:bundled": "pnpm prepare:openfang-runtime && node scripts/tauri-build-bundled.mjs",
     "tauri:build:bundled:debug": "pnpm prepare:openfang-runtime && node scripts/tauri-build-bundled.mjs --debug",
     "tauri:build:nsis:debug": "pnpm prepare:openfang-runtime && node scripts/tauri-build-bundled.mjs --debug --bundles nsis",
-    "tauri:build:msi:debug": "pnpm prepare:openfang-runtime && node scripts/tauri-build-bundled.mjs --debug --bundles msi"
+    "tauri:build:msi:debug": "pnpm prepare:openfang-runtime && node scripts/tauri-build-bundled.mjs --debug --bundles msi",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@tauri-apps/api": "^2",
@@ -36,6 +41,7 @@
     "zustand": "^5.0.11"
   },
   "devDependencies": {
+    "@playwright/test": "^1.58.2",
     "@tailwindcss/vite": "^4.2.1",
     "@tauri-apps/cli": "^2",
     "@types/react": "^19.1.8",
@@ -44,6 +50,7 @@
     "@types/uuid": "^10.0.0",
     "@vitejs/plugin-react": "^4.6.0",
     "autoprefixer": "^10.4.27",
+    "playwright": "^1.58.2",
     "postcss": "^8.5.8",
     "tailwindcss": "^4.2.1",
     "typescript": "~5.8.3",