Tag blog posts and sign them with a member

Tags are named in every language and made from the page form; the byline is
the member who signs a post on the site. The public API sends both, filters
posts by tag and lists the tags in use.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/Providers/AuthServiceProvider.php

@@ -17,6 +17,7 @@ use App\Models\Redirect;
 use App\Models\ReplyTemplate;
 use App\Models\Repository;
 use App\Models\Service;
+use App\Models\Tag;
 use App\Models\Talk;
 use App\Models\Technology;
 use App\Models\Testimonial;
@@ -36,6 +37,7 @@ use App\Policies\ReplyTemplatePolicy;
 use App\Policies\RepositoryPolicy;
 use App\Policies\RolePolicy;
 use App\Policies\ServicePolicy;
+use App\Policies\TagPolicy;
 use App\Policies\TalkPolicy;
 use App\Policies\TechnologyPolicy;
 use App\Policies\TestimonialPolicy;
@@ -69,6 +71,7 @@ class AuthServiceProvider extends ServiceProvider
         Gate::policy(Role::class, RolePolicy::class);
         Gate::policy(Webhook::class, WebhookPolicy::class);
         Gate::policy(ReplyTemplate::class, ReplyTemplatePolicy::class);
+        Gate::policy(Tag::class, TagPolicy::class);
 
         // The one place a permission is granted — spatie's own gate check is
         // switched off (config/permission.php) so nothing answers before this.