Please update app/main.py to expose two new debug endpoints using the helpers we just added to app/db.py.

1) Ensure imports

At the top of app/main.py, make sure these are imported (add them if they are missing, but avoid duplicates):

from uuid import UUID
from fastapi import HTTPException, Depends
from app.db import get_conversation_with_messages, list_conversations_for_customer

If HTTPException or Depends are already imported, just extend the existing import line instead of creating a new one.

2) Add the debug endpoints

After the existing /api/conversations/* endpoints (or in the same area), add the following two endpoints:

@app.get("/api/debug/conversations/{conversation_id}", dependencies=[Depends(require_api_key)])
async def debug_get_conversation(conversation_id: UUID):
    """
    Debug endpoint: return a single conversation and all its messages.
    """
    result = await get_conversation_with_messages(conversation_id)
    if not result:
        raise HTTPException(status_code=404, detail="Conversation not found")
    return result


@app.get("/api/debug/customers/{customer_id}/conversations", dependencies=[Depends(require_api_key)])
async def debug_list_customer_conversations(customer_id: UUID):
    """
    Debug endpoint: list all conversations for a customer (no messages, just summary).
    """
    conversations = await list_conversations_for_customer(customer_id)
    return {
        "customer_id": str(customer_id),
        "count": len(conversations),
        "conversations": conversations,
    }

3) Save app/main.py and restart the server to ensure there are no syntax errors.

4) (Optional sanity test for you, the human, not the agent):

Once the server is running, you can test via curl:

- Single conversation (replace CONV_UUID):

curl -s -X GET "http://localhost:8000/api/debug/conversations/CONV_UUID" \
  -H "x-api-key: lia_renewal_2025_super_secret_1" | python3 -m json.tool

- All conversations for a customer (replace CUST_UUID):

curl -s -X GET "http://localhost:8000/api/debug/customers/CUST_UUID/conversations" \
  -H "x-api-key: lia_renewal_2025_super_secret_1" | python3 -m json.tool