Initial commit: OpenClaw WebUI with LDAP SSO

Features:
- Modern chat interface with streaming responses
- Multi-file upload support
- Code canvas panel for code viewing/editing
- Chat history persistence
- LDAP SSO authentication
- OpenAI-compatible API proxy to OpenClaw gateway
- Model/agent selection
- Dark theme

.gitignore

@@ -0,0 +1,7 @@
+node_modules/
+dist/
+data/
+.DS_Store
+*.log
+.env
+.env.local