feat: enhance review_pending_changes tool visibility and triggers

- Update tool description to strongly encourage Claude to use it before commits
- Add 'ALWAYS use this tool before creating any git commit\!' emphasis
- Add comprehensive trigger words in TOOL_TRIGGERS including:
  - 'before commit', 'about to commit', 'ready to commit'
  - 'review pending changes', 'check my changes'
  - 'pre-commit', 'before I commit', 'should I commit'
- Make it clear this is essential for code quality and preventing bugs
- All tests pass (65 tests), ruff linting clean, black formatting applied

config.py

@@ -67,4 +67,21 @@ TOOL_TRIGGERS = {
         "analyze file",
         "analyze these files",
     ],
+    "review_pending_changes": [
+        "review pending changes",
+        "check my changes",
+        "validate changes",
+        "pre-commit review",
+        "before commit",
+        "about to commit",
+        "ready to commit",
+        "review my git changes",
+        "check git changes",
+        "validate my changes",
+        "review staged changes",
+        "review unstaged changes",
+        "pre-commit",
+        "before I commit",
+        "should I commit",
+    ],
 }