**3 issues found** across 9 files

Prompt for AI agents (unresolved issues)

```text Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately. P1: `client_cert`/`client_key` are silently ignored when `ca_cert` is not provided, falling through to an insecure channel. A user who forgets `ca_cert` gets a plaintext connection with no indication that their mTLS credentials were discarded. Raise a `ValueError` when client credentials are supplied without a CA certificate. P2: Close the gRPC channel in the retry loop even when `ListQueues` fails; currently the error path leaks channels during readiness polling. P2: Missing `compression` field when reconstructing `ClientCallDetails`. The sync interceptor in `client.py` correctly forwards `client_call_details.compression`, but the async interceptor drops it. This silently resets per-RPC compression settings to `None` for any call passing through the interceptor. ```

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