refactor: migrate from bump2version to bump-my-version for version management

- Removed .bumpversion.cfg and integrated version management into pyproject.toml.
- Updated pre-commit hooks and dependencies for code formatting, linting, and type checking.
- Added new functionality to JSONSchemaMessageInstance for generating default values from JSON schema.
- Enhanced test coverage for the new default value generation feature.

.pre-commit-config.yaml

@@ -1,81 +1,77 @@
+# MsgCenterPy pre-commit hooks
+# All tool configs are centralised in pyproject.toml
+
 repos:
-  # Code formatting
+  # ── Code formatting ───────────────────────────────────────────
   - repo: https://github.com/psf/black
-    rev: 23.12.1
+    rev: 26.1.0
     hooks:
       - id: black
         language_version: python3
-        args: ["--line-length=120"]
+        # Reads [tool.black] from pyproject.toml
 
-  # Import sorting
+  # ── Import sorting ────────────────────────────────────────────
   - repo: https://github.com/pycqa/isort
-    rev: 5.13.2
+    rev: 6.1.0
     hooks:
       - id: isort
-        args: ["--profile", "black", "--multi-line", "3"]
+        # Reads [tool.isort] from pyproject.toml
 
-  # Linting
+  # ── Linting ───────────────────────────────────────────────────
   - repo: https://github.com/pycqa/flake8
-    rev: 7.0.0
+    rev: 7.3.0
     hooks:
       - id: flake8
-        args:
-          - "--max-line-length=200" # Allow longer lines after black formatting
-          - "--extend-ignore=E203,W503,F401,E402,E721,F841"
-          - "--exclude=build,dist,__pycache__,.mypy_cache,.pytest_cache,htmlcov,.idea,.vscode,docs/_build,msgcenterpy.egg-info"
+        additional_dependencies: ["Flake8-pyproject"]
+        # Reads [tool.flake8] from pyproject.toml via Flake8-pyproject
 
-  # Type checking
+  # ── Type checking ─────────────────────────────────────────────
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.8.0
+    rev: v1.19.1
     hooks:
       - id: mypy
-        additional_dependencies: [types-PyYAML, types-jsonschema, pydantic]
-        args: ["--ignore-missing-imports", "--disable-error-code=unused-ignore"]
-        files: "^(msgcenterpy/)" # Check both source code and tests
+        args: ["--config-file=pyproject.toml"]
+        files: "^(msgcenterpy/)"
+        additional_dependencies:
+          - "pydantic>=2.0"
+          - "types-PyYAML"
+          - "types-jsonschema"
 
-  # General pre-commit hooks
+  # ── Basic file checks ────────────────────────────────────────
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.5.0
+    rev: v6.0.0
     hooks:
-      # File checks
       - id: trailing-whitespace
-        args: [--markdown-linebreak-ext=md]
       - id: end-of-file-fixer
       - id: check-yaml
       - id: check-json
       - id: check-toml
-      - id: check-xml
-
-      # Security
       - id: check-merge-conflict
       - id: check-case-conflict
       - id: check-symlinks
       - id: check-added-large-files
-        args: ["--maxkb=1000"]
-
-      # Python specific
       - id: check-ast
       - id: debug-statements
       - id: name-tests-test
-        args: ["--django"]
+        args: ["--pytest-test-first"]
 
-  # Security scanning
+  # ── Security scanning ────────────────────────────────────────
   - repo: https://github.com/PyCQA/bandit
-    rev: 1.7.5
+    rev: 1.9.3
     hooks:
       - id: bandit
         args: ["-c", "pyproject.toml"]
         additional_dependencies: ["bandit[toml]", "pbr"]
-        exclude: "^tests/"
+        exclude: "^(tests/)"
 
-  # YAML/JSON formatting
+  # ── YAML/JSON/Markdown formatting ────────────────────────────
   - repo: https://github.com/pre-commit/mirrors-prettier
     rev: v4.0.0-alpha.8
     hooks:
       - id: prettier
         types_or: [yaml, json, markdown]
-        exclude: "^(build/|dist/|__pycache__/|\\.mypy_cache/|\\.pytest_cache/|htmlcov/|\\.idea/|\\.vscode/|docs/_build/|msgcenterpy\\.egg-info/)"
+        exclude: "^(build/|dist/|__pycache__/|\\.mypy_cache/|\\.pytest_cache/|htmlcov/|\\.vscode/|docs/_build/|msgcenterpy\\.egg-info/)"
 
 # Global settings
-default_stages: [pre-commit, pre-push]
+default_stages: [pre-commit]
 fail_fast: false