PR Phase 3: Author Responds to Review

Implement the author workflow for responding to a pull request review, including resubmitting with updated changes.

Notes

On tangled.org, pull requests are based on a static patch blob at the time of creation. When the author pushes new commits to the source branch in response to review feedback, the PR must be resubmitted with a fresh diff.

Tasks

• Implement tangled pr update <id> [--head <head-branch>] [--base <base-branch>] (or tangled pr resubmit) command.
  • Re-generate the git diff patch between the head and base branches.
  • Gzip-compress the new patch.
  • Upload the new compressed patch as a blob using com.atproto.repo.uploadBlob.
  • Use com.atproto.repo.putRecord to update the existing sh.tangled.repo.pull record with the new patchBlob, updated source.sha, and createdAt.
• Verify that tangled pr comment (from Phase 2) covers the author response / discussion use case.
• Document the expected workflow for authors responding to review feedback (update, resubmit, comment).