ci: refresh GhosttyKit checksum for c5c31ce8

[austinywang]

Summary

• Refresh the pinned GhosttyKit archive checksum for Ghostty commit c5c31ce819131ebb2deb4c4d4a75beffe4340c8d.

Root cause

The GhosttyKit release asset under the exact flavor tag was republished. The checksum file still contained the previous digest 1034ae..., while GitHub's release API and the downloaded asset now report 4f75749a.... CI correctly rejected the changed artifact.

Validation

• ./scripts/download-prebuilt-ghosttykit.sh --verify-only
• Verified the release tag targets Ghostty commit c5c31ce819131ebb2deb4c4d4a75beffe4340c8d.
• Verified the downloaded 123 MB archive SHA-256 is 4f75749a168712a2b456840309d9603a94039e97a453bd3f98c3ed945826fe7a.
• git diff --check

Related: #13191

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Summary by cubic

Updates the GhosttyKit checksum in scripts/ghosttykit-checksums.txt to the SHA-256 of the republished archive for the pinned Ghostty commit. CI was rejecting the asset because the old checksum no longer matched; the new one resolves the failure.

^{Written for commit f55caf3. Summary will update on new commits.}

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[coderabbitai]

Note

Currently processing new changes in this PR. This may take a few minutes, please wait...

⚙️ Run configuration

Configuration used: Repository: manaflow-ai/cmux/.coderabbit.yaml

Review profile: ASSERTIVE

Plan: Advanced

Run ID: eb83a31d-127c-41fc-baec-d84673ef79da

📥 Commits

Reviewing files that changed from the base of the PR and between 150d7fa and f55caf3.

📒 Files selected for processing (1)

• scripts/ghosttykit-checksums.txt

 _________________________________________________________________________________________________________________________
< It is better to have 100 functions operate on one data structure than 10 functions on 10 data structures. - Alan Perlis >
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  \
   \   \
        \ /\
        ( )
      .( o ).

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge because the checksum update is structurally valid and matches the documented verification of the republished artifact.

Summary

Refreshes the pinned GhosttyKit archive checksum for the currently pinned Ghostty commit after the release asset was republished.

• Replaces the stale SHA-256 digest with the newly verified digest.
• Preserves the existing commit-to-checksum mapping format and uniqueness.

_{Reviews (1) · Last reviewed commit: "ci: refresh GhosttyKit checksum for c5c3..."}