main: 用户管理和会话功能初始实现

- 添加用户管理功能的测试，包括创建、更新、停用、激活用户及用户登录 JWT 测试
- 提供用户管理相关的请求验证类与控制器
- 引入 CORS 配置信息，支持跨域请求
- 添加数据库播种器以便创建根用户
- 配置 API 默认使用 JWT 认证
- 添加聊天会话和消息的模型、迁移文件及关联功能

app/Http/Requests/AppendMessageRequest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Http\Requests;
+
+use App\Models\Message;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class AppendMessageRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'role' => ['required', 'string', Rule::in([
+                Message::ROLE_USER,
+                Message::ROLE_AGENT,
+                Message::ROLE_TOOL,
+                Message::ROLE_SYSTEM,
+            ])],
+            'type' => ['required', 'string', 'max:64'],
+            'content' => ['nullable', 'string'],
+            'payload' => ['nullable', 'array'],
+            'reply_to' => ['nullable', 'uuid'],
+            'dedupe_key' => ['nullable', 'string', 'max:128'],
+        ];
+    }
+}

app/Http/Requests/CreateSessionRequest.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CreateSessionRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'session_name' => ['nullable', 'string', 'max:255'],
+        ];
+    }
+}

app/Http/Requests/LoginRequest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class LoginRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'email' => ['required', 'email'],
+            'password' => ['required', 'string'],
+        ];
+    }
+}

app/Http/Requests/StoreUserRequest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class StoreUserRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'name' => ['required', 'string', 'max:255'],
+            'email' => ['required', 'email', 'max:255', 'unique:users,email'],
+            'password' => ['required', 'string', 'min:8'],
+        ];
+    }
+}

app/Http/Requests/UpdateUserRequest.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class UpdateUserRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'name' => ['sometimes', 'required', 'string', 'max:255'],
+            'email' => [
+                'sometimes',
+                'required',
+                'email',
+                'max:255',
+                Rule::unique('users', 'email')->ignore($this->route('user')),
+            ],
+            'password' => ['sometimes', 'required', 'string', 'min:8'],
+        ];
+    }
+}