Initial Laravel 12 + Filament 5 + Octane skeleton

- Laravel 12 base
- Filament 5 (default admin panel)
- Stancl/Tenancy v3 (config + migrations only)
- Spatie Permission
- Octane FrankenPHP runtime
- Sanctum
- Dockerfile multi-stage (composer + node + frankenphp:8.4)
- Entrypoint runs migrations + caches on boot
- .env.example pre-completat cu hosturi interne Coolify
- Health endpoint /up

Repo init pentru multi-tenant SaaS pe Coolify Hetzner.

.gitattributes

@@ -0,0 +1,11 @@
+* text=auto eol=lf
+
+*.blade.php diff=html
+*.css diff=css
+*.html diff=html
+*.md diff=markdown
+*.php diff=php
+
+/.github export-ignore
+CHANGELOG.md export-ignore
+.styleci.yml export-ignore