Fix Kuzu graph write lock error and suppress pip/transformer warnings

pipeline/graph_store.py

@@ -86,8 +86,9 @@ def store_entities(entities: list[dict], source: str, tier: str = "extended", se
     if not conn:
         return
     
-    # Store nodes
-    for ent in entities:
+    with _db_lock:
+        # Store nodes
+        for ent in entities:
         if not isinstance(ent, dict):
             continue
         ent_name = ent.get("name") or ent.get("entity") or ent.get("id")

start.sh

@@ -98,7 +98,8 @@ fi
 
 # ── Uninstall conflicting torchaudio to prevent OSError ─────────────────────────
 echo "[pre-flight] Removing torchaudio to prevent transformers loading issues on HF..."
-python -m pip uninstall -y torchaudio || true
+export TRANSFORMERS_NO_ADVISORY_WARNINGS=1
+python -m pip uninstall -y torchaudio --root-user-action=ignore || true
 
 # ── Start embed_llm on port 8003 ──────────────────────────────────────────────
 echo "[1/3] Starting embed_llm (port 8003)..."