Implement Open Source edition limits and feature restrictions

- Add 5 mutation types (paraphrase, noise, tone_shift, prompt_injection, custom)
- Cap mutations at 50 per test run
- Force sequential execution only
- Disable GitHub Actions integration (Cloud feature)
- Add upgrade prompts throughout CLI
- Update README with feature comparison
- Add limits.py module for centralized limit management
- Add cloud and limits CLI commands
- Update all documentation with Cloud upgrade messaging

.pre-commit-config.yaml

@@ -0,0 +1,73 @@
+# Pre-commit hooks for Entropix
+# Install: pip install pre-commit && pre-commit install
+# Run manually: pre-commit run --all-files
+
+default_language_version:
+  python: python3.10
+
+repos:
+  # General file checks
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-yaml
+        args: [--unsafe]  # Allow custom tags in YAML
+      - id: check-json
+      - id: check-toml
+      - id: check-added-large-files
+        args: ['--maxkb=1000']
+      - id: check-merge-conflict
+      - id: debug-statements
+      - id: check-case-conflict
+
+  # Black - Code formatter
+  - repo: https://github.com/psf/black
+    rev: 24.3.0
+    hooks:
+      - id: black
+        language_version: python3.10
+        args: [--config=pyproject.toml]
+
+  # Ruff - Fast Python linter (replaces flake8, isort, etc.)
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.3.4
+    hooks:
+      # Run the linter
+      - id: ruff
+        args: [--fix, --exit-non-zero-on-fix]
+      # Run the formatter (alternative to black, but we use black)
+      # - id: ruff-format
+
+  # MyPy - Static type checker
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v1.9.0
+    hooks:
+      - id: mypy
+        additional_dependencies:
+          - pydantic>=2.0.0
+          - types-PyYAML
+          - types-aiofiles
+        args: [--config-file=pyproject.toml]
+        # Only check src directory to avoid checking untyped dependencies
+        files: ^src/
+
+  # Security checks
+  - repo: https://github.com/PyCQA/bandit
+    rev: 1.7.8
+    hooks:
+      - id: bandit
+        args: [-c, pyproject.toml, -r, src/]
+        additional_dependencies: ["bandit[toml]"]
+
+# CI configuration
+ci:
+  autofix_commit_msg: |
+    [pre-commit.ci] auto fixes from pre-commit hooks
+  autofix_prs: true
+  autoupdate_branch: ''
+  autoupdate_commit_msg: '[pre-commit.ci] pre-commit autoupdate'
+  autoupdate_schedule: weekly
+  skip: []
+  submodules: false