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/Models/Tag.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Models\Concerns\BumpsContentVersion;
+use Database\Factories\TagFactory;
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Spatie\Translatable\HasTranslations;
+
+/**
+ * What a post is about — `angular`, `accesibilidad` — so the blog can be read
+ * by subject. Named in every language, like a category.
+ */
+#[Fillable(['name', 'slug'])]
+class Tag extends Model
+{
+    /** @use HasFactory<TagFactory> */
+    use BumpsContentVersion, HasFactory, HasTranslations;
+
+    /**
+     * @var array<int, string>
+     */
+    public array $translatable = ['name', 'slug'];
+
+    /**
+     * @return BelongsToMany<Page, $this>
+     */
+    public function pages(): BelongsToMany
+    {
+        return $this->belongsToMany(Page::class);
+    }
+}