refactor: 合并 biz_support_unit/biz_execution_unit/biz_service_org 为 biz_org, 删除 2 张孤儿表, 改 biz_person.work_unit → org_id FK

主要改动:
- SQL: biz_support_unit → biz_org, 加 org_type, 加 business_nature; 删 biz_execution_unit, biz_service_org
- SQL: biz_project.support_unit_id/name + service_org_id/name → org_id/name/type
- SQL: biz_meeting.support_unit_name → org_name
- SQL: biz_person.work_unit → org_id (FK)
- 后端: 新 BizOrg entity/mapper/service/controller
- 后端: BizProject/BizMeeting 字段重命名
- 后端: 删 12 个 BizSupportUnit/BizExecutionUnit/BizServiceOrg Java 文件
- 后端: BizPersonImportVO.workUnit → orgName (导入时查 biz_org 取 org_id)
- 后端: BizAuthController.registerExecutor 完整实现 (原 registerSupplier stub)
- 前端: 新 admin/Orgs.vue + manager/Orgs.vue (原 SupportUnits)
- 前端: RegisterExecutor.vue (原 RegisterSupplier, 单页 2 步)
- 前端: sponsor/executor/manager 多个文件 workUnit → orgId/orgName 重命名
- 前端: 统一 supplier → executor, 业务命名 sponsor(赞助方) / executor(执行方=供应商)
- 前端: 全工程 execution → executor (company type / role / person unit_type)

ry-vue3/src/store/user.js

@@ -0,0 +1,38 @@
+import { defineStore } from 'pinia'
+
+export const useUserStore = defineStore('user', {
+  state: () => ({
+    token: localStorage.getItem('ry_token') || '',
+    user: JSON.parse(localStorage.getItem('ry_user') || 'null')
+  }),
+  getters: {
+    role: (s) => s.user?.role || '',
+    isLogin: (s) => !!s.user,
+    accountType: (s) => s.user?.accountType || 'MAIN',
+    parentUserId: (s) => s.user?.parentUserId || null,
+    isMain: (s) => (s.user?.accountType || 'MAIN') === 'MAIN',
+    isSub: (s) => s.user?.accountType === 'SUB'
+  },
+  actions: {
+    setLogin(token, user) {
+      this.token = token
+      this.user = user
+      localStorage.setItem('ry_token', token)
+      localStorage.setItem('ry_user', JSON.stringify(user))
+    },
+    setToken(token) {
+      this.token = token
+      localStorage.setItem('ry_token', token)
+    },
+    setUser(user) {
+      this.user = user
+      localStorage.setItem('ry_user', JSON.stringify(user))
+    },
+    logout() {
+      this.token = ''
+      this.user = null
+      localStorage.removeItem('ry_token')
+      localStorage.removeItem('ry_user')
+    }
+  }
+})