Add dynamic template system: Implemented header, footer, and section templates with corresponding models, migrations, and Filament resources. Enhanced Page model to support dynamic templates and updated localization files for new terms. Added TemplateService for managing template data and rendering. Comprehensive documentation included for usage and best practices.

app/Models/SectionTemplate.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class SectionTemplate extends Model
+{
+    use SoftDeletes;
+
+    protected $fillable = [
+        'title',
+        'html_content',
+        'is_active',
+    ];
+
+    protected $casts = [
+        'is_active' => 'boolean',
+    ];
+
+    /**
+     * Section templates are used via JSON in pages.sections_data
+     * No direct relation needed, but we can add a helper method
+     */
+    public function getPagesUsingThisTemplate()
+    {
+        return Page::whereJsonContains('sections_data', [['section_template_id' => $this->id]])->get();
+    }
+}