feat: add Reverb realtime messaging

app/Http/Requests/Messaging/ManageConversationParticipantRequest.php

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+<?php
+
+namespace App\Http\Requests\Messaging;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class ManageConversationParticipantRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'user_id' => 'required|integer|exists:users,id',
+        ];
+    }
+}

app/Http/Requests/Messaging/RenameConversationRequest.php

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+<?php
+
+namespace App\Http\Requests\Messaging;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class RenameConversationRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'title' => 'required|string|max:120',
+        ];
+    }
+}

app/Http/Requests/Messaging/StoreConversationRequest.php

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+<?php
+
+namespace App\Http\Requests\Messaging;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class StoreConversationRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'type' => 'required|in:direct,group',
+            'recipient_id' => 'required_if:type,direct|integer|exists:users,id',
+            'participant_ids' => 'required_if:type,group|array|min:2',
+            'participant_ids.*' => 'integer|exists:users,id',
+            'title' => 'required_if:type,group|nullable|string|max:120',
+            'body' => 'required|string|max:5000',
+            'client_temp_id' => 'nullable|string|max:120',
+        ];
+    }
+}

app/Http/Requests/Messaging/StoreMessageRequest.php

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+<?php
+
+namespace App\Http\Requests\Messaging;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class StoreMessageRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'body' => 'nullable|string|max:5000',
+            'attachments' => 'sometimes|array|max:5',
+            'attachments.*' => 'file|max:25600',
+            'client_temp_id' => 'nullable|string|max:120',
+            'reply_to_message_id' => 'nullable|integer|exists:messages,id',
+        ];
+    }
+}

app/Http/Requests/Messaging/ToggleMessageReactionRequest.php

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+<?php
+
+namespace App\Http\Requests\Messaging;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class ToggleMessageReactionRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'reaction' => 'required|string|max:32',
+        ];
+    }
+}

app/Http/Requests/Messaging/UpdateMessageRequest.php

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+<?php
+
+namespace App\Http\Requests\Messaging;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateMessageRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'body' => 'required|string|max:5000',
+        ];
+    }
+}