Initial CSE website content integration

.gitignore

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+# dependencies
+node_modules/
+
+# build output and framework caches
+dist/
+.astro/
+.netlify/
+.vercel/
+
+# local environment and machine state
+.env
+.env.*
+!.env.example
+.DS_Store
+
+# logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# local agent/browser artifacts
+.codex/
+.claude/
+.playwright-mcp/