Initial Ladill Queue release — enterprise QMS standalone app.

Phases 1–6: tickets, counters, displays, appointments, workflows, rules, analytics, reports, feedback, admin, device API, and Gitea deploy workflow for queue.ladill.com.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Models/DisplayScreen.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Models;
+
+use App\Models\Concerns\BelongsToOwner;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Support\Str;
+
+class DisplayScreen extends Model
+{
+    use BelongsToOwner, SoftDeletes;
+
+    protected $table = 'queue_display_screens';
+
+    protected $fillable = [
+        'uuid', 'owner_ref', 'organization_id', 'branch_id',
+        'name', 'layout', 'access_token', 'service_queue_ids', 'settings', 'is_active', 'last_seen_at',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'service_queue_ids' => 'array',
+            'settings' => 'array',
+            'is_active' => 'boolean',
+            'last_seen_at' => 'datetime',
+        ];
+    }
+
+    protected static function booted(): void
+    {
+        static::creating(function (self $screen) {
+            $screen->uuid ??= (string) Str::uuid();
+            $screen->access_token ??= Str::random(48);
+        });
+    }
+
+    public function organization(): BelongsTo
+    {
+        return $this->belongsTo(Organization::class, 'organization_id');
+    }
+
+    public function branch(): BelongsTo
+    {
+        return $this->belongsTo(Branch::class, 'branch_id');
+    }
+}