Implement comprehensive CI/CD pipeline with GitHub Actions

## CI Pipeline (.github/workflows/ci.yml)
- Multi-Python version testing (3.10, 3.11, 3.12, 3.13)
- Cross-platform compatibility testing
- Code coverage reporting with Codecov integration
- Security scanning with Bandit
- Package build verification
- Docker containerization testing

## CD Pipeline (.github/workflows/publish.yml)
- Automatic PyPI publishing on version bumps to main branch
- Version existence checking to prevent duplicate publishes
- Test PyPI validation before production publish
- Automatic GitHub release creation with assets
- Manual release workflow support

## Version Management (.github/workflows/version-bump.yml)
- Manual version bump workflow with patch/minor/major options
- Custom version specification support
- Automatic changelog generation
- Pull request creation for version bumps

## Dependencies & Maintenance
- Dependabot configuration for automated dependency updates
- Grouped dependency updates for better PR management
- Monthly GitHub Actions updates

## Documentation & Setup
- Comprehensive CI/CD setup guide (.github/SETUP_CICD.md)
- PyPI API token configuration instructions
- GitHub secrets setup documentation
- Troubleshooting guide and best practices

## Additional Features
- Pull request template improvements
- Enhanced linting configuration with venv exclusions
- CHANGELOG.md initialization with current version history
- Local CI/CD testing script for validation

This implementation provides a complete CI/CD pipeline for:
- ✅ Automated testing on every PR
- ✅ Automated PyPI publishing on version bumps
- ✅ Security scanning and code quality checks
- ✅ Cross-platform and multi-Python version support
- ✅ Dependency management automation
- ✅ Release management with GitHub releases

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

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

.github/dependabot.yml

@@ -0,0 +1,59 @@
+version: 2
+updates:
+  # Python dependencies
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+      timezone: "UTC"
+    open-pull-requests-limit: 5
+    reviewers:
+      - "montevive"
+    assignees:
+      - "montevive"
+    commit-message:
+      prefix: "deps"
+      include: "scope"
+    labels:
+      - "dependencies"
+      - "python"
+    groups:
+      dev-dependencies:
+        patterns:
+          - "pytest*"
+          - "flake8*"
+          - "coverage*"
+          - "pre-commit*"
+          - "isort*"
+          - "autopep8*"
+          - "pyupgrade*"
+          - "setuptools*"
+      production-dependencies:
+        patterns:
+          - "mcp*"
+          - "requests*"
+          - "python-dotenv*"
+          - "gunicorn*"
+          - "anytree*"
+          - "jsonschema*"
+          - "PyYAML*"
+
+  # GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+      day: "monday"
+      time: "09:00"
+      timezone: "UTC"
+    open-pull-requests-limit: 3
+    reviewers:
+      - "montevive"
+    commit-message:
+      prefix: "ci"
+      include: "scope"
+    labels:
+      - "dependencies"
+      - "github-actions"