[Bug] GitHub connector missing from MCP list despite showing in settings

Bug Description
GitHub is listed at claude.ai/settings/connectors but does not appear in /mcp in the Claude Code CLI. All other 19 connectors sync correctly. GitHub shows neither "connected", "needs authentication", nor "failed" — it simply does not
appear in the list at all.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.62
• Feedback ID: d3c522be-5548-4bf3-952f-d7fc728809bb

Errors

[{"error":"Error: Failed to delete keychain entry\n    at rcB (/$bunfs/root/claude:3655:6018)\n    at async zD0 (/$bunfs/root/claude:6272:685)\n    at async cbA (/$bunfs/root/claude:6272:589)\n    at async fdT (/$bunfs/root/claude:2418:2222)\n    at async gdT (/$bunfs/root/claude:2442:5405)\n    at async <anonymous> (/$bunfs/root/claude:2458:3956)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-27T20:52:31.415Z"},{"error":"Error: Request was aborted.\n    at makeRequest (/$bunfs/root/claude:307:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-27T21:04:24.730Z"},{"error":"Error: Request was aborted.\n    at nhR (/$bunfs/root/claude:820:96592)\n    at next (native:1:11)\n    at E_0 (/$bunfs/root/claude:6022:6980)\n    at next (native:1:11)\n    at N_0 (/$bunfs/root/claude:6027:9145)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-27T21:04:32.702Z"}]