feat: pre-commit hook 지원 추가

.pre-commit-hooks.yaml 생성, README에서 coming soon 제거.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: SonAIengine

.pre-commit-hooks.yaml

@@ -0,0 +1,8 @@
+- id: toolint
+  name: toolint
+  description: Structural linter for MCP-compatible Python agent tool packages
+  entry: toolint check
+  language: python
+  types: [python]
+  pass_filenames: false
+  always_run: true

README.md

@@ -183,7 +183,7 @@ Or use `.toolint.toml` as a standalone config file.
   run: uvx toolint check .
 ```
 
-### Pre-commit (coming soon)
+### Pre-commit
 
 ```yaml
 repos: