PR Cache Cleanup

Remove cache files for PRs that have been merged or closed.

When to Use

Invoke this skill when:

• User wants to clean up stale cache files
• User says "clean up cache", "cleanup merged PR caches", "remove old caches", or "clear review cache"
• User wants to free up space from old cache files

Note: This skill has disable-model-invocation: true because it deletes files and should only be user-triggered.

Workflow

Step 1: Preview (Dry Run)

Always start with a dry run to show what would be deleted:

${CLAUDE_PLUGIN_ROOT}/scripts/cache-cleanup.sh --dry-run

Step 2: Confirm with User

Present the preview results to the user:

• How many files would be deleted
• Which PRs they belong to
• PR states (MERGED, CLOSED, NOT_FOUND)

Ask for confirmation before proceeding.

Step 3: Execute Cleanup

Only after user confirmation:

${CLAUDE_PLUGIN_ROOT}/scripts/cache-cleanup.sh

Step 4: Report Results

Inform the user:

• Number of files deleted
• Number of files kept (open PRs)
• Any errors encountered

Options

Flag	Description
--dry-run	Preview only, don't delete
--all	Remove ALL cache files including open PRs (use with caution)

Example Output

=== PR Review Cache Cleanup ===

DRY RUN - no files will be deleted

Scanning cache files...

Would delete: .pr-review-cache/pr-123.json (PR #123, state: MERGED, cached: 2026-02-01T10:00:00Z)
Would delete: .pr-review-cache/pr-124.json (PR #124, state: CLOSED, cached: 2026-02-02T10:00:00Z)
Keeping: .pr-review-cache/pr-125.json (PR #125 is still open)

=== Summary ===
Would delete: 2 files
Kept: 1 files

See Also

完整工作流程說明請參閱 pr-review-workflow.md。