init. 初始化项目，并初步完成前端模板样式

users/models.py

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+from django.contrib.auth.models import PermissionsMixin, AbstractUser
+from django.db import models
+
+
+# Create your models here.
+class Permission(models.Model):
+    CODENAMES = [
+        ('view', '查看'),
+        ('add', '新增'),
+        ('edit', '编辑'),
+        ('delete', '删除'),
+    ]
+    resource = models.CharField("资源标识", max_length=50)  # 如 'article', 'menu', 'carousel'
+    action = models.CharField("操作", max_length=10, choices=CODENAMES)
+    desc = models.CharField("描述", max_length=100)
+
+    class Meta:
+        unique_together = ('resource', 'action')
+
+    def __str__(self):
+        return f"{self.resource}:{self.action}"
+
+
+class Role(models.Model):
+    name = models.CharField("角色名称", max_length=50, unique=True)
+    permissions = models.ManyToManyField('Permission', blank=True)
+
+    def __str__(self):
+        return self.name
+
+
+class Department(models.Model):
+    name = models.CharField("部门名称", max_length=100, unique=True)
+    parent = models.ForeignKey('self', on_delete=models.CASCADE, null=True, blank=True, verbose_name="上级部门")
+    order = models.IntegerField("排序", default=0)
+
+    class Meta:
+        verbose_name = "部门"
+        verbose_name_plural = "部门管理"
+
+    def __str__(self):
+        return self.name
+
+
+class User(AbstractUser, PermissionsMixin):
+    username = models.CharField("英文名/账号", max_length=30, unique=True)
+    cname = models.CharField("中文名", max_length=30, blank=True)
+    dept = models.ForeignKey('Department', on_delete=models.SET_NULL, null=True, blank=True, verbose_name="所属部门")
+    is_active = models.BooleanField(default=True)
+
+    USERNAME_FIELD = 'username'
+    REQUIRED_FIELDS = []
+
+    def __str__(self):
+        return f"{self.cname} ({self.username})"
+
+
+# 给 User 关联 Role（多对多）
+User.add_to_class('roles', models.ManyToManyField(Role, blank=True))