PR Cache Sync

Synchronize local cache with the latest PR review comment from GitHub.

When to Use

Invoke this skill when:

• User wants to ensure their local cache is up-to-date
• User suspects the cache might be stale
• User says "sync PR cache", "pull latest review", "refresh cache", or "update local cache"

Workflow

Step 1: Get PR Number (Cache-Aware)

PR_NUMBER=$("${CLAUDE_PLUGIN_ROOT}/scripts/get-pr-number.sh")

This uses the branch-to-PR-number cache (branch-map.json) with 1-hour TTL, falling back to GitHub API on cache miss.

If no PR exists for the current branch, inform the user and stop.

Step 2: Run Sync Script

${CLAUDE_PLUGIN_ROOT}/scripts/cache-sync.sh "$PR_NUMBER"

The script will:

1. Show previous cache timestamp (if exists)
2. Force refresh from GitHub
3. Compare hashes to detect changes
4. Report results

Step 3: Report Results

Inform the user:

• Whether the cache was updated
• If content changed since last cache
• The new cache timestamp

Example Output

=== PR Review Cache Sync ===
PR #123

Previous cache: 2026-02-05T10:30:00Z
Previous hash: sha256:abc123...

Fetching from GitHub...

New cache: 2026-02-05T14:45:00Z
New hash: sha256:def456...

⚠️  Content changed since last cache!

=== Sync complete ===

See Also

完整工作流程說明請參閱 pr-review-workflow.md。