task-108(任务与重复分析中心): 实现视频任务数据范围权限配置

新增 task-permission.ts(授权用户列表解析/已授权 id/保存负载/变更判定)，
image-video-api.ts 增加 fetch/saveImageVideoPermissions(GET|PUT /image-video-
task-permissions)。

TDD: task-108.test.ts 8 用例先 RED 后 GREEN。

admin-frontend-vue/tests/task-108.test.ts

@@ -0,0 +1,72 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import {
+  grantedUserIds,
+  parseTaskPermissionPayload,
+  permissionSelectionChanged,
+  toPermissionUserIdsPayload,
+} from '../src/pages/tasks/task-permission.ts'
+
+test('test_task_108_task_permission_normal_primary_path', () => {
+  // 正常主路径：权限用户负载(data 数组)解析并取已授权 id。
+  const items = parseTaskPermissionPayload({
+    success: true,
+    data: [
+      { id: 1, username: '张伟', granted: true },
+      { id: 2, username: '李四', granted: false },
+    ],
+  })
+  assert.equal(items.length, 2)
+  assert.equal(items[1].username, '李四')
+  assert.deepEqual(grantedUserIds(items), [1])
+})
+
+test('test_task_108_task_permission_normal_variant_input', () => {
+  // 正常变体：data.items 包裹也可解析。
+  const items = parseTaskPermissionPayload({ data: { items: [{ id: 5, username: 'A', granted: true }] } })
+  assert.equal(items.length, 1)
+  assert.deepEqual(grantedUserIds(items), [5])
+})
+
+test('test_task_108_task_permission_repeated_is_idempotent', () => {
+  // 正常重复：解析稳定、不改输入。
+  const payload = { data: [{ id: 3, username: 'A', granted: true }] }
+  assert.deepEqual(parseTaskPermissionPayload(payload), parseTaskPermissionPayload(payload))
+})
+
+test('test_task_108_task_permission_boundary_empty_input', () => {
+  // 边界空值：空授权列表与无用户负载。
+  assert.deepEqual(parseTaskPermissionPayload({ data: [] }), [])
+  assert.deepEqual(parseTaskPermissionPayload({}), [])
+})
+
+test('test_task_108_task_permission_boundary_single_item', () => {
+  // 边界单元素：单用户授权 id 与保存负载。
+  const items = parseTaskPermissionPayload({ data: [{ id: 7, username: 'Z', granted: true }] })
+  assert.deepEqual(grantedUserIds(items), [7])
+  assert.deepEqual(toPermissionUserIdsPayload(new Set([7, 3])), { user_ids: [7, 3] })
+})
+
+test('test_task_108_task_permission_boundary_limit_or_missing_field', () => {
+  // 边界上限/缺字段：缺 granted 按未授权处理。
+  const items = parseTaskPermissionPayload({ data: [{ id: 4, username: 'U' }] })
+  assert.equal(items[0].granted, false)
+  assert.deepEqual(grantedUserIds(items), [])
+})
+
+test('test_task_108_task_permission_invalid_input_rejected', () => {
+  // 异常输入：无 id 用户被过滤；success=false 抛后端 message。
+  assert.equal(parseTaskPermissionPayload({ data: [{ username: 'no-id' }, { id: 2, username: 'x' }] }).length, 1)
+  assert.throws(() => parseTaskPermissionPayload({ success: false, message: '仅超级管理员可配置' }), /仅超级管理员/)
+})
+
+test('test_task_108_task_permission_dependency_failure_returns_actionable_message', () => {
+  // 依赖失败/加载走 adapter：GET|PUT /api/admin/image-video-task-permissions + 解析。
+  const api = readSource('src/pages/tasks/image-video-api.ts')
+  assert.match(api, /\/api\/admin\/image-video-task-permissions/)
+  assert.match(api, /saveImageVideoPermissions/)
+  assert.match(api, /http\.put/)
+  const model = readSource('src/pages/tasks/task-permission.ts')
+  assert.equal(/axios|http\.|vue/.test(model), false, '权限模型保持纯逻辑')
+})