feat: add source-grounded evolution and Ollama assistant

backend/app/api/routes/assistant.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from uuid import UUID
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+
+from app.db.session import get_db
+from app.schemas.assistant import AssistantQueryRequest
+from app.services.geo_assistant_service import GeoAssistantService
+from app.utils.response import envelope
+
+
+router = APIRouter(tags=["assistant"])
+
+
+@router.get("/assistant/status", response_model=dict)
+def assistant_status() -> dict:
+    return envelope(GeoAssistantService().status().model_dump())
+
+
+@router.get("/assistant/models", response_model=dict)
+def assistant_models() -> dict:
+    service = GeoAssistantService()
+    models = service.list_models()
+    return envelope(
+        {
+            "items": [model.model_dump() for model in models],
+            "total": len(models),
+            "default_model": service.settings.ollama_default_model,
+        }
+    )
+
+
+@router.post("/projects/{project_id}/assistant/query", response_model=dict)
+def assistant_query(
+    project_id: UUID,
+    payload: AssistantQueryRequest,
+    db: Session = Depends(get_db),
+) -> dict:
+    return envelope(GeoAssistantService().query(db, project_id=project_id, payload=payload).model_dump())