feat: Add Caddy static sites and implement domain strategy
Domain Strategy:
- fig.systems: Homelab services only (removed edfig.dev fallback from all services)
- edfig.dev: Professional/public sites (personal site, blog)
- figgy.foo: Experimental/private content (SSO protected)
Removed edfig.dev Fallbacks:
- Updated 22 compose files to remove || Host(...edfig.dev) pattern
- All homelab services now use fig.systems only
- Traefik email remains admin@edfig.dev
Added Caddy Static Sites Service:
- compose/services/static-sites/ with Caddy 2
- Serves three domains with different configurations:
* edfig.dev (personal/professional) - Public, no SSO
* blog.edfig.dev (blog) - Public, Markdown rendering, templates
* figgy.foo (experimental) - SSO protected, directory browsing
- Example sites with modern, responsive designs
- Comprehensive README with usage examples
- Auto-reload on config changes (no restarts needed)
Features:
- Markdown rendering (write .md, serves as HTML)
- Go templates for dynamic content
- Directory browsing (figgy.foo)
- Automatic gzip compression
- Static asset caching
- Zero-downtime config reloads
Updated Documentation:
- README.md: Added domain strategy section, static sites in directory structure
- README.md: Added static sites to service URLs table
- README.md: Updated deployment instructions
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