API Changes Review

Step 1: Identify what changed

Read .claude/skills/comparison-base/SKILL.md and execute it with HEAD as $REVIEW_REF. This is required; use the target and comparison commit it resolves.

Compare the selected base with the working tree, not just HEAD, because this skill is often called immediately after API reports have been regenerated and those edits may be uncommitted:

git diff "$BASE_COMMIT" -- ':(glob)**/api-report/*.md'
git ls-files --others --exclude-standard -- ':(glob)**/api-report/*.md'

Treat the union of both command outputs as the changed API reports. For each untracked report, read the full file as a new API surface because it has no Git diff until staged.