Stabilize core correctness and sync project plan state

src/atocore/main.py

@@ -3,7 +3,7 @@
 from fastapi import FastAPI
 
 from atocore.api.routes import router
-from atocore.config import settings
+import atocore.config as _config
 from atocore.context.project_state import init_project_state_schema
 from atocore.models.database import init_db
 from atocore.observability.logger import setup_logging
@@ -29,7 +29,7 @@ if __name__ == "__main__":
 
     uvicorn.run(
         "atocore.main:app",
-        host=settings.host,
-        port=settings.port,
+        host=_config.settings.host,
+        port=_config.settings.port,
         reload=True,
     )