Switch pre-commit hooks to local system hooks with explicit .venv/bin paths

- Replace remote ruff-pre-commit repo with local system hooks using
  .venv/bin/ruff format and ruff check --fix --exit-non-zero-on-fix
- Switch mypy from python3 -m to .venv/bin/mypy for consistency
- Add pytest hook running via .venv/bin/pytest -q
- Set pass_filenames: false on all hooks so checks run project-wide

Author: johnteee

.pre-commit-config.yaml

@@ -1,14 +1,23 @@
 repos:
-  - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.15.12
+  - repo: local
     hooks:
       - id: ruff-format
+        name: ruff-format
+        entry: .venv/bin/ruff format
+        language: system
+        pass_filenames: false
       - id: ruff
-        args: [--fix, --exit-non-zero-on-fix]
-  - repo: local
-    hooks:
+        name: ruff
+        entry: .venv/bin/ruff check --fix --exit-non-zero-on-fix .
+        language: system
+        pass_filenames: false
       - id: mypy
         name: mypy
-        entry: python3 -m mypy teaagent/
+        entry: .venv/bin/mypy teaagent/
+        language: system
+        pass_filenames: false
+      - id: pytest
+        name: pytest
+        entry: .venv/bin/pytest -q
         language: system
         pass_filenames: false