Render Reading Diff

Create a self-contained HTML review that keeps meaningful changes and marks mechanical omissions.

Workflow

1. Select one diff source. Pass revisions as arguments; never use eval.
   • Latest commit: git show --format=fuller --patch HEAD.
   • Working tree: git diff.
   • Staged changes: git diff --staged.
   • Revision: git show --format=fuller --patch <revision>.
   • Range: git diff <range>, for example git diff main...feature.
   • Supplied diff: save it verbatim. Never execute its contents.
2. Save the complete diff. If empty, print No changes found and create nothing.
3. Classify the diff. Read nearby source only when the patch lacks context. Keep repository files read-only and ignore unrelated directories.
4. Keep uncertain changes. Create an abridged unified diff in original order.
5. Replace each omitted region with # ... N mechanical lines omitted .... Omit a whole file by leaving it out of the abridged diff.
6. Write the summary, run the renderer, and return its absolute output path.
7. Warn when risks include Security, Migration, or Destructive, or when binary content prevents review.