Ensure WebUI always loads even if MCP/watcher fail

- Wrap MCP server and watcher startup in try/except.
- Log warnings but never block WebUI launch.

scraibe/__main__.py

@@ -11,6 +11,9 @@ Optionally launches:
 
 import os
 import threading
+import logging
+
+logger = logging.getLogger("scraibe.__main__")
 
 from .webui import create_app
 
@@ -34,15 +37,23 @@ def _run_mcp_server():
 
 
 if __name__ == "__main__":
-    # Optionally start MCP server in background
+    # Optionally start MCP server in background (non-blocking)
     mcp_enabled = os.getenv("MCP_SERVER_ENABLED", "false").strip().lower() in ("true", "1", "yes")
     if mcp_enabled:
-        t = threading.Thread(target=_run_mcp_server, daemon=True)
-        t.start()
+        try:
+            t = threading.Thread(target=_run_mcp_server, daemon=True)
+            t.start()
+            logger.info("MCP server started in background.")
+        except Exception as e:
+            logger.warning("Failed to start MCP server (WebUI will continue): %s", e)
 
-    # Optionally start watch-folder mode
-    from .watcher import start_watcher
-    start_watcher()
+    # Optionally start watch-folder mode (non-blocking)
+    try:
+        from .watcher import start_watcher
+        start_watcher()
+        logger.info("Watch-folder mode started.")
+    except Exception as e:
+        logger.warning("Failed to start watch-folder mode (WebUI will continue): %s", e)
 
     # Always start WebUI (Gradio)
     create_app()