feat: initialize Hugo static site with Bootstrap 5.x

Initialize minimal Hugo site structure with Bootstrap 5.3.2 integration for
markusgraf.ch conversion. Implements OpenSpec proposal add-minimal-hugo-site.

Features:
- Hugo project structure with standard directories
- Base layout template (baseof.html) with Bootstrap 5.3.2 via CDN
- Homepage (index.html) and single page (single.html) templates
- Reusable partials: header, footer, navigation
- Responsive Bootstrap grid layout
- Mobile-first design with semantic HTML5
- Valid HTML output with basic accessibility features
- Taxonomies disabled for minimal site (see docs/TAXONOMIES.md)

Documentation:
- IMPLEMENTATION_SUMMARY.md - Complete implementation guide
- docs/TAXONOMIES.md - Guide for re-enabling categories/tags
- static/README.md - Guide for placing static assets

Configuration:
- hugo.toml configured for markusgraf.ch
- .gitignore for Hugo build artifacts

All 24 tasks from OpenSpec proposal completed successfully.

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

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

static/README.md

@@ -0,0 +1,21 @@
+# Static Assets
+
+Place your static assets in this directory. They will be available at the root of your site.
+
+## Directory Structure
+
+```
+static/
+├── images/       # Place images here (will be accessible at /images/)
+├── fonts/        # Place custom fonts here (will be accessible at /fonts/)
+├── css/          # Place custom CSS files here (will be accessible at /css/)
+└── favicon.ico   # Place favicon at root
+```
+
+## Examples
+
+- `static/images/logo.png` → accessible at `/images/logo.png`
+- `static/favicon.ico` → accessible at `/favicon.ico`
+- `static/css/custom.css` → accessible at `/css/custom.css`
+
+Copy your existing markusgraf.ch static assets (images, fonts, etc.) into the appropriate subdirectories.