feat: Inertia profile settings page, Studio edit redesign, EGS, Nova UI components\n\n- Redesign /dashboard/profile as Inertia React page (Settings/ProfileEdit)\n with SettingsLayout sidebar, Nova UI components (TextInput, Textarea,\n Toggle, Select, RadioGroup, Modal, Button), avatar drag-and-drop,\n password change, and account deletion sections\n- Redesign Studio artwork edit page with two-column layout, Nova components,\n integrated TagPicker, and version history modal\n- Add shared MarkdownEditor component\n- Add Early-Stage Growth System (EGS): SpotlightEngine, FeedBlender,\n GridFiller, AdaptiveTimeWindow, ActivityLayer, admin panel\n- Fix upload category/tag persistence (V1+V2 paths)\n- Fix tag source enum, category tree display, binding resolution\n- Add settings.jsx Vite entry, settings.blade.php wrapper\n- Update ProfileController with JSON response support for API calls\n- Various route fixes (profile.edit, toolbar settings link)"

app/Models/StaffApplication.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Str;
+
+class StaffApplication extends Model
+{
+    use HasFactory;
+
+    public $incrementing = false;
+    protected $keyType = 'string';
+
+    protected $fillable = [
+        'id','topic','name','email','role','portfolio','message','payload','ip','user_agent'
+    ];
+
+    protected $casts = [
+        'payload' => 'array',
+    ];
+
+    protected static function booted()
+    {
+        static::creating(function ($model) {
+            if (empty($model->id)) {
+                $model->id = (string) Str::uuid();
+            }
+        });
+    }
+}