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

pyproject.toml

@@ -51,6 +51,7 @@ dev = [
     "pytest>=7.0",
     "pytest-asyncio>=0.21",
     "httpx>=0.24",
+    "ruff>=0.4.0",
 ]
 
 [project.urls]
@@ -67,3 +68,18 @@ build-backend = "setuptools.build_meta"
 
 [tool.setuptools.packages.find]
 include = ["media_server*"]
+
+[tool.ruff]
+target-version = "py310"
+line-length = 120
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "W"]
+
+[tool.ruff.lint.per-file-ignores]
+# AppleScript string literals contain long lines that cannot be broken
+"media_server/services/macos_media.py" = ["E501"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+asyncio_mode = "auto"