Add CI/CD pipelines, NSIS installer, ES module bundling, and ruff linting

- Add Gitea Actions workflows: test.yml (lint + test on push/PR) and
  release.yml (build + NSIS installer + upload on v* tags)
- Add NSIS installer with optional desktop shortcut and auto-start
- Add esbuild bundler: ES module migration with IIFE bundle output
- Add build-dist-windows.sh for cross-building Windows distribution
- Fix all ruff lint errors (import sorting, unused imports, line length)
- Remove redundant scripts (start-server.bat, stop-server.bat,
  start-server-background.vbs)
- Update CLAUDE.md with CI/CD and release documentation

media_server/static/index.html

@@ -651,14 +651,6 @@
         </div>
     </footer>
 
-    <script src="/static/js/core.js"></script>
-    <script src="/static/js/player.js"></script>
-    <script src="/static/js/websocket.js"></script>
-    <script src="/static/js/scripts.js"></script>
-    <script src="/static/js/callbacks.js"></script>
-    <script src="/static/js/browser.js"></script>
-    <script src="/static/js/links.js"></script>
-    <script src="/static/js/background.js"></script>
-    <script src="/static/js/main.js"></script>
+    <script src="/static/dist/app.bundle.js"></script>
 </body>
 </html>