Initial Ladill Meet release.

Phases 0–18: core meetings, webinar, breakouts, team chat, live streaming, town hall, billing, and Ladill Mail calendar wiring.

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

app/Models/CalendarConnection.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\Support\Str;
+
+class CalendarConnection extends Model
+{
+    use BelongsToOwner;
+
+    protected $table = 'meet_calendar_connections';
+
+    protected $fillable = [
+        'uuid', 'owner_ref', 'organization_id', 'user_ref', 'provider',
+        'access_token', 'refresh_token', 'expires_at', 'calendar_id', 'metadata',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'expires_at' => 'datetime',
+            'metadata' => 'array',
+            'access_token' => 'encrypted',
+            'refresh_token' => 'encrypted',
+        ];
+    }
+
+    protected static function booted(): void
+    {
+        static::creating(function (CalendarConnection $connection) {
+            if (empty($connection->uuid)) {
+                $connection->uuid = (string) Str::uuid();
+            }
+        });
+    }
+
+    public function organization(): BelongsTo
+    {
+        return $this->belongsTo(Organization::class, 'organization_id');
+    }
+
+    public function isExpired(): bool
+    {
+        return $this->expires_at !== null && $this->expires_at->isPast();
+    }
+}