feat(org): add Chinese verbose_name and help_text to all org fields (Phase 4.1 part 4/9)

Sync DATA_MODEL_ORG.md field-level Chinese annotations to Django
models across 11 org tables (OrgUnit, Staff, StaffPersonalInfo,
StaffTransferLog, StaffRewardPunish, StaffAccount, StaffWorkExperience,
StaffEducation, StaffTraining, StaffFamilyMember, StaffRemark).

apps/org/models/org_unit.py

@@ -5,8 +5,17 @@ from core.models.base import SoftDeleteModel
 
 
 class OrgUnit(SoftDeleteModel):
-    name = models.CharField(max_length=100)
-    type = models.CharField(max_length=20, choices=OrgUnitType.choices)
+    name = models.CharField(
+        max_length=100,
+        verbose_name="部门名称",
+        help_text="部门/组织名称",
+    )
+    type = models.CharField(
+        max_length=20,
+        choices=OrgUnitType.choices,
+        verbose_name="组织类型",
+        help_text="company=公司 / division=事业部 / region=大区 / area=区域 / district=片区 / store=门店 / group=店组 / functional=职能",
+    )
     parent = models.ForeignKey(
         "self",
         null=True,
@@ -14,35 +23,100 @@ class OrgUnit(SoftDeleteModel):
         on_delete=models.RESTRICT,
         related_name="children",
         db_index=True,
+        verbose_name="父节点",
+        help_text="父节点，根节点为 NULL",
     )
     path = models.TextField(
-        help_text="Materialized path: /root_id/.../self_id/ for subtree queries.",
+        verbose_name="物化路径",
+        help_text='/root_id/.../self_id/，用于子树查询',
+    )
+    depth = models.SmallIntegerField(
+        default=0,
+        verbose_name="节点深度",
+        help_text="根=0，最大支持 8 层",
+    )
+    sort_order = models.IntegerField(
+        default=0,
+        verbose_name="排序顺序",
+        help_text="同级排序",
     )
-    depth = models.SmallIntegerField(default=0)
-    sort_order = models.IntegerField(default=0)
     attribute = models.CharField(
         max_length=10,
         choices=OrgUnitAttribute.choices,
         null=True,
         blank=True,
+        verbose_name="经营属性",
+        help_text="direct=直营 / franchise=加盟",
+    )
+    address_city = models.CharField(
+        max_length=50,
+        blank=True,
+        default="",
+        verbose_name="所在城市",
+    )
+    address_district = models.CharField(
+        max_length=50,
+        blank=True,
+        default="",
+        verbose_name="所在县区",
+    )
+    address_detail = models.CharField(
+        max_length=200,
+        blank=True,
+        default="",
+        verbose_name="详细地址",
+    )
+    latitude = models.DecimalField(
+        max_digits=10,
+        decimal_places=7,
+        null=True,
+        blank=True,
+        verbose_name="纬度",
+        help_text="部门定位针 WGS84",
+    )
+    longitude = models.DecimalField(
+        max_digits=10,
+        decimal_places=7,
+        null=True,
+        blank=True,
+        verbose_name="经度",
+        help_text="部门定位针 WGS84",
     )
-    address_city = models.CharField(max_length=50, blank=True, default="")
-    address_district = models.CharField(max_length=50, blank=True, default="")
-    address_detail = models.CharField(max_length=200, blank=True, default="")
-    latitude = models.DecimalField(max_digits=10, decimal_places=7, null=True, blank=True)
-    longitude = models.DecimalField(max_digits=10, decimal_places=7, null=True, blank=True)
     manager = models.ForeignKey(
         "org.Staff",
         null=True,
         blank=True,
         on_delete=models.SET_NULL,
         related_name="managed_org_units",
+        verbose_name="部门负责人",
+        help_text="循环依赖，Application 层维护",
+    )
+    established_at = models.DateField(
+        null=True,
+        blank=True,
+        verbose_name="成立时间",
+    )
+    phone = models.CharField(
+        max_length=30,
+        blank=True,
+        default="",
+        verbose_name="部门联系电话",
+    )
+    ext_start = models.IntegerField(
+        null=True,
+        blank=True,
+        verbose_name="分机号起始",
+    )
+    ext_end = models.IntegerField(
+        null=True,
+        blank=True,
+        verbose_name="分机号结束",
+    )
+    is_active = models.BooleanField(
+        default=True,
+        verbose_name="是否启用",
+        help_text="FALSE=已关闭部门，仍可在筛选中显示",
     )
-    established_at = models.DateField(null=True, blank=True)
-    phone = models.CharField(max_length=30, blank=True, default="")
-    ext_start = models.IntegerField(null=True, blank=True)
-    ext_end = models.IntegerField(null=True, blank=True)
-    is_active = models.BooleanField(default=True)
 
     class Meta:
         db_table = "org_units"