[Bug] /ultraplan fails on newly-created repos due to CLI repo-sync lag

Bug Description
Title: /ultraplan can't launch on newly-created repos — CLI repo-sync lags the web session
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▎ Severity: High — blocks Ultraplan entirely for new repos.
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▎ What happens: /ultraplan fails with "cannot launch remote session — The Claude GitHub app must be installed on this repository first" for a repo created minutes earlier, even though the Claude GitHub App has all-repo access
▎ and older repos on the same account launch fine.
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▎ Environment: Claude Code CLI, macOS. GitHub jiusonggao, repo jiusonggao/Black-Jack (private, created same day).
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▎ Repro:
▎ 1. Create + push a new private repo.
▎ 2. Confirm Claude GitHub App has access to it.
▎ 3. Run /ultraplan → fails.
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▎ Key clue: The repo does show up when starting a session manually at claude.ai/code, but /ultraplan in the CLI keeps failing — so the CLI's synced-repo view lags the web's, with no way to force a CLI refresh. Tried:
▎ re-saving the app install, re-adding the repo, disconnect/reconnect GitHub, many retries. Nothing user-side clears it.
▎
▎ Ask: Force/shorten the new-repo sync, give the CLI a "refresh repositories" action, and make the error distinguish "app not installed" from "repo not yet synced."

Environment Info

• Platform: darwin
• Terminal: androidstudio
• Version: 2.1.168
• Feedback ID: 205b8181-53ed-44b7-b5b8-ded648538a13

Errors

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