[BUG] Scheduled tasks cannot access MCP connectors until a user message warms the session (request to reopen of auto closed #35899)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Session ID: session_011uHJWNUcxyRTrpfrwTxDnP

1. A routine task that used to work now fails, it seems the issue where some tools are not loaded until a user message still happens. (similar to #35899 but I'm not able to reopen it)

1. What really worried me, is that the links to authorize Notion and authorize GitHub (see screenshot) both led to a Google Drive OAuth screen. but I'll open a separate issue for it...

Relevant part of the session:

<img width="818" height="445" alt="Image" src="https://github.com/user-attachments/assets/5868f9da-3051-4675-8812-b26da26b645d" />

What happens when you click the Notion or GitHub auth links

<img width="1126" height="806" alt="Image" src="https://github.com/user-attachments/assets/c4df998e-a390-480b-9790-17d85bc19001" />

What Should Happen?

1. Routine tasks should load all connectors successfully, and not wait for user input.
2. Authentication links to GitHub or Notion should not take you to a Google Drive OAuth screen...

Error Messages/Logs

Steps to Reproduce

1. Create a schedule routine task with connectors (slack, office, notion, github) in Claude Code Web
2. Wait a few days
3. Observe that some tasks are stuck claiming you need to re-authenticate

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

N/A (web)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Reopen request of:

• https://github.com/anthropics/claude-code/issues/35899 (I was not able to reopen as github automation closed it, and asked to create a new one referencing it)

Related to:

• https://github.com/anthropics/claude-code/issues/48878 (could be related to the Notion auth issue, however it also said it can't connect to github, which is a bit weird as this is a Claude Code routine task, GitHub is the one thing it should have access to, and after the user message, it did indeed admit it does have access to GitHub, the Notion issue might be an additional unrelated issue)