feat: initial release of relaticle/comments

Filament comments package with:
- Polymorphic commenting on any Eloquent model
- Threaded replies with configurable depth
- @mentions with autocomplete and user search
- Emoji reactions with toggle and who-reacted tooltips
- File attachments via Livewire uploads
- Reply and mention notifications via Filament notification system
- Thread subscriptions for notification control
- Real-time broadcasting (opt-in Echo) with polling fallback
- Dark mode support
- CommentsAction, CommentsTableAction, CommentsEntry for Filament integration
- 204 tests, 421 assertions

src/CommentsServiceProvider.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Relaticle\Comments;
+
+use Illuminate\Database\Eloquent\Relations\Relation;
+use Illuminate\Support\Facades\Event;
+use Illuminate\Support\Facades\Gate;
+use Livewire\Livewire;
+use Relaticle\Comments\Contracts\MentionResolver;
+use Relaticle\Comments\Events\CommentCreated;
+use Relaticle\Comments\Events\UserMentioned;
+use Relaticle\Comments\Listeners\SendCommentRepliedNotification;
+use Relaticle\Comments\Listeners\SendUserMentionedNotification;
+use Relaticle\Comments\Livewire\CommentItem;
+use Relaticle\Comments\Livewire\Comments;
+use Relaticle\Comments\Livewire\Reactions;
+use Spatie\LaravelPackageTools\Package;
+use Spatie\LaravelPackageTools\PackageServiceProvider;
+
+class CommentsServiceProvider extends PackageServiceProvider
+{
+    public static string $name = 'comments';
+
+    public static string $viewNamespace = 'comments';
+
+    public function configurePackage(Package $package): void
+    {
+        $package
+            ->name(static::$name)
+            ->hasConfigFile()
+            ->hasViews(static::$viewNamespace)
+            ->hasTranslations()
+            ->hasMigrations([
+                'create_comments_table',
+                'create_comment_mentions_table',
+                'create_comment_reactions_table',
+                'create_comment_subscriptions_table',
+                'create_comment_attachments_table',
+            ]);
+    }
+
+    public function packageRegistered(): void
+    {
+        Relation::morphMap([
+            'comment' => Config::getCommentModel(),
+        ]);
+
+        $this->app->bind(
+            MentionResolver::class,
+            fn () => new (Config::getMentionResolver())
+        );
+    }
+
+    public function packageBooted(): void
+    {
+        Gate::policy(
+            Config::getCommentModel(),
+            Config::getPolicyClass(),
+        );
+
+        Event::listen(CommentCreated::class, SendCommentRepliedNotification::class);
+        Event::listen(UserMentioned::class, SendUserMentionedNotification::class);
+
+        Livewire::component('comments', Comments::class);
+        Livewire::component('comment-item', CommentItem::class);
+        Livewire::component('reactions', Reactions::class);
+    }
+}