feat(rag): steering notes — tune how Brain answers, stored in Postgres and injected into every system prompt

app/main.py

@@ -16,6 +16,7 @@ from fastapi.staticfiles import StaticFiles
 from app.api.chat import router as chat_router
 from app.api.docs import router as docs_router
 from app.api.health import router as health_router
+from app.api.steering import router as steering_router
 from app.api.suggestions import router as suggestions_router
 from app.config import get_settings
 from app.core.debugging import configure_debugging
@@ -36,6 +37,7 @@ def create_app() -> FastAPI:
     app.include_router(suggestions_router, prefix="/api")
     app.include_router(docs_router, prefix="/api")
     app.include_router(chat_router, prefix="/api")
+    app.include_router(steering_router, prefix="/api")
 
     static_dir = Path(settings.static_dir).resolve()
     if static_dir.is_dir():