Fix Phase 1 server validation defects

ansible/roles/cezen-backend/files/main.py

@@ -2412,6 +2412,11 @@ def _ollama_embed(texts: list[str], model: str = OLLAMA_EMBED) -> list[list[floa
                 log_context=f"_ollama_embed(model={model})", log_exc=e)
     return embeddings
 
+def _chroma_collection_id(name: str) -> str:
+    """Resolve a stable Chroma collection name to the UUID required by data routes."""
+    collection = _chroma_req("GET", f"/api/v1/collections/{name}")
+    return collection["id"]
+
 # Collections
 @app.get("/api/rag/collections")
 async def list_collections(admin: dict = Depends(admin_only)):
@@ -2554,7 +2559,8 @@ async def delete_document(cid: int, doc_id: int, admin: dict = Depends(admin_onl
     # Remove chunks from ChromaDB
     if col:
         try:
-            _chroma_req("POST", f"/api/v1/collections/{col['chroma_name']}/delete",
+            chroma_id = _chroma_collection_id(col["chroma_name"])
+            _chroma_req("POST", f"/api/v1/collections/{chroma_id}/delete",
                         body={"where": {"doc_id": {"$eq": doc_id}}})
         except Exception:
             pass
@@ -2598,7 +2604,8 @@ async def rag_query(body: dict, user: dict = Depends(current_user)):
         raise HTTPException(status_code=503, detail="Failed to embed query")
 
     # Query ChromaDB
-    result = _chroma_req("POST", f"/api/v1/collections/{col['chroma_name']}/query", body={
+    chroma_id = _chroma_collection_id(col["chroma_name"])
+    result = _chroma_req("POST", f"/api/v1/collections/{chroma_id}/query", body={
         "query_embeddings": embed,
         "n_results": n_results,
         "include": ["documents", "metadatas", "distances"]