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/Models/ChatSession.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Models;
+
+use App\Enums\ChatSessionStatus;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class ChatSession extends Model
+{
+    use HasFactory;
+
+    protected $primaryKey = 'session_id';
+
+    public $incrementing = false;
+
+    protected $keyType = 'string';
+
+    protected $fillable = [
+        'session_id',
+        'session_name',
+        'status',
+        'last_seq',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'last_seq' => 'integer',
+        ];
+    }
+
+    public function messages(): HasMany
+    {
+        return $this->hasMany(Message::class, 'session_id', 'session_id');
+    }
+
+    public function isClosed(): bool
+    {
+        return $this->status === ChatSessionStatus::CLOSED;
+    }
+
+    public function isLocked(): bool
+    {
+        return $this->status === ChatSessionStatus::LOCKED;
+    }
+}

app/Models/Message.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Message extends Model
+{
+    use HasFactory;
+
+    public const ROLE_USER = 'USER';
+    public const ROLE_AGENT = 'AGENT';
+    public const ROLE_TOOL = 'TOOL';
+    public const ROLE_SYSTEM = 'SYSTEM';
+
+    protected $primaryKey = 'message_id';
+
+    public $incrementing = false;
+
+    protected $keyType = 'string';
+
+    public $timestamps = false;
+
+    protected $fillable = [
+        'message_id',
+        'session_id',
+        'role',
+        'type',
+        'content',
+        'payload',
+        'seq',
+        'reply_to',
+        'dedupe_key',
+        'created_at',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'payload' => 'array',
+            'seq' => 'integer',
+            'created_at' => 'datetime',
+        ];
+    }
+
+    public function session(): BelongsTo
+    {
+        return $this->belongsTo(ChatSession::class, 'session_id', 'session_id');
+    }
+}

app/Models/User.php

@@ -6,8 +6,9 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
+use PHPOpenSourceSaver\JWTAuth\Contracts\JWTSubject;
 
-class User extends Authenticatable
+class User extends Authenticatable implements JWTSubject
 {
     /** @use HasFactory<\Database\Factories\UserFactory> */
     use HasFactory, Notifiable;
@@ -21,6 +22,7 @@ class User extends Authenticatable
         'name',
         'email',
         'password',
+        'is_active',
     ];
 
     /**
@@ -43,6 +45,17 @@ class User extends Authenticatable
         return [
             'email_verified_at' => 'datetime',
             'password' => 'hashed',
+            'is_active' => 'boolean',
         ];
     }
+
+    public function getJWTIdentifier(): mixed
+    {
+        return $this->getKey();
+    }
+
+    public function getJWTCustomClaims(): array
+    {
+        return [];
+    }
 }