Initial theme scaffolding (v0.0.1)

- Bootstrap 5 CSS/JS integration via Yarn (served locally)
- Dart Sass build pipeline with PostCSS, Autoprefixer, cssnano
- Twig 3.0 via Composer with PSR-4 autoloading
- FSE block theme templates (index, home, single, page, archive, search, 404)
- Template parts (header, footer) and block patterns
- theme.json with Bootstrap 5-aligned design tokens
- Gitea CI/CD workflow for automated release packages
- WordPress i18n support (en_US base, de_CH translation)

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

PLAN.md

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+# WP Bootstrap - Development Plan
+
+## Project Vision
+
+WP Bootstrap is a modern WordPress Block Theme built from scratch with Bootstrap 5. It provides a clean, responsive foundation for WordPress websites using the Full Site Editing (FSE) architecture with Bootstrap's design system.
+
+## Architecture
+
+### Theme Type
+
+Full Site Editing (FSE) Block Theme following the WordPress 6.x template hierarchy:
+
+- **Templates** (`templates/`): HTML files with WordPress block markup
+- **Template Parts** (`parts/`): Reusable header/footer components
+- **Patterns** (`patterns/`): PHP files with block markup and i18n support
+- **Design Tokens** (`theme.json`): Colors, typography, spacing mapped to Bootstrap 5
+
+### Technology Stack
+
+- **PHP 8.3+** with PSR-4 autoloading
+- **Twig 3.0** via Composer for custom block rendering
+- **Bootstrap 5.3+** CSS & JS served locally
+- **Dart Sass** for SCSS compilation
+- **PostCSS** with Autoprefixer and cssnano for production CSS
+
+### Build Pipeline
+
+```txt
+src/scss/style.scss → sass → assets/css/style.css → postcss → assets/css/style.min.css
+src/scss/editor-style.scss → sass → assets/css/editor-style.css
+node_modules/bootstrap/dist/js/ → copyfiles → assets/js/bootstrap.bundle.min.js
+```
+
+## Version Roadmap
+
+### v0.0.1 - Getting Started (Current)
+
+- Theme scaffolding and project setup
+- Bootstrap 5 CSS/JS integration
+- SASS build pipeline
+- Basic FSE templates and patterns
+- Twig infrastructure
+- Gitea CI/CD workflow
+- i18n support (en_US, de_CH)
+
+### v0.1.0 - Core Theme
+
+- Complete set of block patterns
+- Dark mode toggle implementation
+- Custom block styles for Bootstrap components
+- Style variations (color schemes)
+- Sidebar template part
+- Enhanced typography settings
+
+### v0.2.0 - Design Editor
+
+- Full Design Editor compatibility
+- Custom block categories
+- Page-level patterns and templates
+- Enhanced header/footer variations
+- Custom navigation styles
+
+### v0.3.0 - Polish
+
+- Performance optimization (selective Bootstrap imports)
+- Accessibility audit and fixes
+- RTL language support
+- Additional translations
+- Documentation
+
+### v1.0.0 - Release
+
+- All features complete and tested
+- WordPress.org theme review compliance
+- Comprehensive documentation
+- Full test coverage
+
+## Bootstrap 5 Integration Strategy
+
+### CSS
+
+Bootstrap SCSS is imported into the theme's build pipeline with variable overrides applied before import. The compiled CSS contains the full Bootstrap framework plus WordPress-specific overrides.
+
+### JavaScript
+
+The Bootstrap JS bundle (including Popper.js) is served as a pre-built file copied from `node_modules` during the build step.
+
+### Design Tokens
+
+`theme.json` colors, typography, and spacing are aligned with Bootstrap's default SCSS variables to ensure visual consistency between the WordPress editor and the frontend.
+
+## Dark Mode Plan
+
+Bootstrap 5.3+ includes built-in dark mode via the `data-bs-theme="dark"` attribute. Implementation plan:
+
+1. SCSS: `$enable-dark-mode: true` generates dark mode CSS custom properties
+2. JavaScript: Toggle mechanism with `localStorage` persistence
+3. WordPress: Integration with the Site Editor color scheme
+4. Accessibility: Respect `prefers-color-scheme` media query