refactor: replace single PR review with bulk review command

Replace review-pr command with review-pending-prs to enable efficient
batch review of open PRs. New command fetches up to 10 unreviewed PRs,
performs automated checks, and provides bulk actions (close rejected,
label approved, request fixes).

🤖 Generated with Claude Code (https://claude.ai/code)
Co-Authored-By: Claude <[email protected]>

Author: vinta

.claude/commands/review-pending-prs.md

@@ -0,0 +1,65 @@
+# Review Pending PRs
+
+Review pending PRs against [CONTRIBUTING.md](../../CONTRIBUTING.md) acceptance criteria.
+
+## Usage
+
+```
+/review-pending-prs
+```
+
+## Instructions
+
+1. Fetch open PRs (skip reviewed): `gh pr list --repo vinta/awesome-python --limit 20 --json number,title,author,url,labels --jq '[.[] | select(.labels | map(.name) | index("claude reviewed") | not)] | .[:10]'`
+2. For each PR:
+   - Fetch PR details: `gh pr view <number> --repo vinta/awesome-python --json title,body,author,files,url,mergeable,mergeStateStatus`
+   - Fetch PR diff: `gh pr diff <number> --repo vinta/awesome-python`
+   - For each project added, fetch repo stats: `gh api repos/<owner>/<repo> --jq '{stars: .stargazers_count, created: .created_at, updated: .pushed_at, language: .language, archived: .archived}'`
+3. Review against all criteria in [CONTRIBUTING.md](../../CONTRIBUTING.md)
+4. Present summary table of 10 PRs with recommendations
+5. Ask user:
+
+```
+Would you like me to:
+
+1. Close the rejected PRs with comments?
+2. Add "claude reviewed" label to the approved PRs?
+3. Add comments to PRs need to be fixed?
+```
+
+## Quick Rejection Checks
+
+Check these rules first - if any fail, recommend rejection:
+
+- Add more than one project per PR
+- Duplicate of existing entry
+- Placed under an inappropriate category
+- Project is archived or abandoned (no commits in 12+ months)
+- No documentation or unclear use case
+- Less than 100 GitHub stars AND not justified as a hidden gem
+- PR has merge conflicts (notify author to resolve)
+
+## Output Format
+
+Provide a simple review:
+
+1. **Rejection Check** - table with the 3 rules and PASS/FAIL
+2. **Recommendation** - APPROVE for further review, or REJECT with reason
+
+## Closing PRs
+
+If user asks to close/reject:
+
+```bash
+gh pr close <number> --repo vinta/awesome-python --comment "<brief reason>"
+```
+
+## Mark as Reviewed
+
+```bash
+gh pr edit <number> --repo vinta/awesome-python --add-label "claude reviewed"
+```
+
+## Extra Instructions (If Provided)
+
+$ARGUMENTS