Add Filament admin panel and creative public portfolio site

Adds a Filament admin (Profile settings page plus CRUD resources for
Education, Experience, Projects, and Posts) backing a public-facing
personal site: hero/about/timeline home page, project showcase, and
blog, styled with a dark editorial theme (Fraunces + Instrument Sans).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitignore

@@ -15,8 +15,11 @@
 /auth.json
 /node_modules
 /public/build
+/public/css/filament
 /public/fonts-manifest.dev.json
+/public/fonts/filament
 /public/hot
+/public/js/filament
 /public/storage
 /storage/*.key
 /storage/pail