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/components/DoctorDeptSelect.vue

@@ -0,0 +1,55 @@
+<template>
+  <dict-select
+    v-model="selected"
+    :dict-type="DICT_TYPE.DEPARTMENT"
+    :value-field="valueField"
+    :placeholder="placeholder"
+    :disabled="disabled"
+    :clearable="clearable"
+    :filterable="filterable"
+    :multiple="multiple"
+    class="doctor-dept-select"
+    @change="handleChange"
+  />
+</template>
+
+<script setup>
+import { ref, watch } from 'vue'
+import DictSelect from '@/components/DictSelect.vue'
+import { DICT_TYPE } from '@/api/dict'
+
+/**
+ * 公共科室下拉控件 (医生/科室字典, 与 RuoYi sys_dept 区分)
+ * v-model 默认绑 ID (deptId), 也可改为绑 name 字符串
+ *
+ * 用法:
+ *   <dept-select v-model="form.deptId" />
+ *   <dept-select v-model="form.department" value-field="label" filterable placeholder="搜索科室" />
+ */
+const props = defineProps({
+  modelValue: { type: [String, Number, Array], default: null },
+  /** 'value' (deptId) 或 'label' (科室名称) */
+  valueField: { type: String, default: 'value' },
+  placeholder: { type: String, default: '请选择科室' },
+  disabled: { type: Boolean, default: false },
+  clearable: { type: Boolean, default: true },
+  filterable: { type: Boolean, default: false },
+  multiple: { type: Boolean, default: false }
+})
+
+const emit = defineEmits(['update:modelValue', 'change'])
+
+const selected = ref(props.modelValue ?? (props.multiple ? [] : null))
+watch(() => props.modelValue, v => {
+  selected.value = v ?? (props.multiple ? [] : null)
+})
+
+function handleChange(val, opt) {
+  emit('update:modelValue', val)
+  emit('change', val, opt)
+}
+</script>
+
+<style scoped>
+.doctor-dept-select { width: 100%; }
+</style>