refactor: rename review tools for clarity and consistency

- Renamed `review_code` tool to `codereview` for better naming convention
- Renamed `review_changes` tool to `precommit` to better reflect its purpose
- Updated all tool descriptions to remove "Triggers:" sections and improve clarity
- Updated all imports and references throughout the codebase
- Renamed test files to match new tool names
- Updated server.py tool registrations
- All existing functionality preserved with improved naming

This refactoring improves code organization and makes tool purposes clearer.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

tests/test_docker_path_integration.py

@@ -156,10 +156,10 @@ def test_review_changes_docker_path_translation():
             utils.file_utils.CONTAINER_WORKSPACE = container_workspace
 
             # Import after reloading to get updated environment
-            from tools.review_changes import ReviewChanges
+            from tools.precommit import Precommit
 
             # Create tool instance
-            tool = ReviewChanges()
+            tool = Precommit()
 
             # Test path translation in prepare_prompt
             request = tool.get_request_model()(
@@ -209,10 +209,10 @@ def test_review_changes_docker_path_error():
             utils.file_utils.CONTAINER_WORKSPACE = container_workspace
 
             # Import after reloading to get updated environment
-            from tools.review_changes import ReviewChanges
+            from tools.precommit import Precommit
 
             # Create tool instance
-            tool = ReviewChanges()
+            tool = Precommit()
 
             # Test path translation with an inaccessible path
             request = tool.get_request_model()(