Add sql-review skill

Read-only SQL review against 10 rules (SQL Server + pyodbc). The review
runs in a subagent and every issue lands in query_tracker.md with a
before/after fix plan.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -7,5 +7,6 @@ Claude skills for RPA projects. Each folder in `skills/` is one skill: copy it i
 | `rpa-run-tab` | Adds a Tebra-style Run tab (Trigger button, Excel input, progress, live log, checkpoints) to a desktop PyQt6 bot in about 5 minutes. |
 | `rpa-dashboard-no-ai` | Builds a full dashboard (run panel, overview, report, optional checkpoints, admin and login) for a bot with no AI. Desktop or web. |
 | `rpa-dashboard-ai` | The same dashboard, plus confidence bands, review-and-approve and a cost/ROI page, for a bot that uses an LLM or OCR. Install it together with `rpa-dashboard-no-ai`. |
+| `sql-review` | Reviews SQL code (SQL Server + pyodbc) against 10 rules through a subagent and writes every issue with a before/after fix plan to `query_tracker.md`. Read-only. |
 
 Run all tests: `uv run --with pytest --with playwright pytest tests`