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/DirectParticipant.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class DirectParticipant extends Model
+{
+    protected $table = 'meet_direct_participants';
+
+    protected $fillable = ['conversation_id', 'user_ref'];
+
+    public function conversation(): BelongsTo
+    {
+        return $this->belongsTo(DirectConversation::class, 'conversation_id');
+    }
+}