fix(frontend): include frontend/dist in npm package and support static file serving

- Add ccw/frontend/dist/ to package.json files field
- Modify react-frontend.ts to detect and use production build
- Add static file serving to server.ts with MIME type support
- Update prepublishOnly to build frontend before publishing
- Fix unused import in TerminalDashboardPage.tsx

This fixes the 'Could not find React frontend directory' error when users install from npm.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-code-workflow",
-  "version": "7.0.0",
+  "version": "7.0.1",
   "description": "JSON-driven multi-agent development framework with intelligent CLI orchestration (Gemini/Qwen/Codex), context-first architecture, and automated workflow execution",
   "type": "module",
   "main": "ccw/dist/index.js",
@@ -19,7 +19,7 @@
     "test": "node --experimental-strip-types --test ccw/tests/*.test.js",
     "test:visual": "node --experimental-strip-types --test ccw/tests/visual/**/*.visual.test.ts",
     "test:e2e": "node --experimental-strip-types --test ccw/tests/e2e/*.e2e.test.ts",
-    "prepublishOnly": "npm run build && node ccw/scripts/prepublish-clean.mjs && echo 'Ready to publish @dyw/claude-code-workflow'",
+    "prepublishOnly": "npm run build && npm run frontend:build && node ccw/scripts/prepublish-clean.mjs && echo 'Ready to publish @dyw/claude-code-workflow'",
     "frontend": "npm run dev --workspace=ccw/frontend",
     "frontend:build": "npm run build --workspace=ccw/frontend",
     "ws:install": "npm install",
@@ -65,6 +65,7 @@
     "ccw/bin/",
     "ccw/dist/",
     "ccw/scripts/",
+    "ccw/frontend/dist/",
     ".claude/agents/",
     ".claude/commands/",
     ".claude/scripts/",