Bug: /schedule remote-account creation persistently failing for 48+ hours

Summary

Trying to create scheduled remote agents (routines) via /schedule consistently fails with the error:

"We're having trouble connecting with your remote claude.ai account to set up a scheduled task. Please try /schedule again in a few minutes."

Failure history

Same project, same account, same machine (M1 MacBook):

• 2026-04-30 — first attempt failed
• 2026-05-01 — second attempt failed (next session)
• 2026-05-02 — third attempt failed (today)

All three sessions had healthy network + claude.ai access verified. Existing scheduled tasks list and run successfully via the same MCP server.

Pattern

The pattern is specifically create_scheduled_task failing while list_scheduled_tasks works. Could be:

• Backend-side issue affecting routine creation specifically
• Account-level rate limiting
• Token-refresh edge case
• Remote-agent provisioning bottleneck

Environment

• Claude Code: latest (Opus 4.7 model)
• OS: macOS Darwin 24.6.0 (M1 MacBook Pro)
• Happy to provide session IDs or transcripts if useful for debugging.