fix: completely bypass auth for development environment

- Skip auth check entirely in App.tsx for development
- Add .env.dev file with DISABLE_AUTH=true and PULSE_MOCK_MODE=true
- Update hot-dev.sh to load .env.dev environment variables
- This ensures the app loads immediately without auth issues
- WebSocket and API now work without authentication in dev mode

scripts/hot-dev.sh

@@ -1,5 +1,10 @@
 #!/bin/bash
 
+# Load development environment variables
+if [ -f /opt/pulse/.env.dev ]; then
+    export $(cat /opt/pulse/.env.dev | grep -v '^#' | xargs)
+fi
+
 # Hot-reload development setup
 # Frontend runs on Vite dev server on port 7655 with instant hot-reload
 # Backend API runs on port 7656 (one port up)