Google Drive connector works in chat but is invisible to list_connectors/cloud routine attachment

Summary
A Google Drive connector shows as Connected on the Connectors settings page and works correctly for direct tool calls in a chat session, but is completely invisible to the routine-creation connector list, so it can't be attached to a scheduled cloud routine.

Environment

• Claude Code CLI, connected via a persistent homelab session
• Connector: Google Drive, connected via claude.ai/customize/connectors

Steps to reproduce

1. Connect a Google Drive connector at claude.ai/customize/connectors (shows checkmark/Connected)
2. In a Claude Code chat session, confirm the connector works -- e.g. a Drive search tool call successfully returns real files owned by the connected account
3. Attempt to list connectors for cloud-routine attachment (the flow used when creating a scheduled /schedule routine that needs mcp_connections)

Expected: the connected Google Drive connector appears in the list and can be attached to a routine.

Actual: the connector list is empty, every time, across many retries over an extended period (spanning hours).

Troubleshooting already tried, no effect:

• Waiting (connector had already been connected for days, not a fresh-connect propagation issue)
• Full disconnect + reconnect (twice -- including once with a deliberate wait between disconnect and reconnect, since the first reconnect attempt showed a stale "still connected" state immediately after disconnecting)
• Confirmed same account both via the settings page and by the connector successfully returning real files owned by that account in chat

Key detail for triage: the connector is not broken -- it works for live chat tool calls. Only the routine-attachment path can't see it. That suggests the two paths read connector state from different places, and one of them isn't in sync.