fix(ops-backend/service-station): close Phase 19 KEEP-VERIFY — 25 defects (unreachable announcements + station write privilege escalation; banner 500 + soft-delete leak; content publish dead-end; program approval dead-end/draft leak/zero counts/missing withdraw; zero-coverage test schema) ; add V042 announcement chain + 34 guard tests; full regression 602 green

Backend
- Service Station: expose the 「临时公告」 chain end-to-end (V042 table/service existed
  but had ZERO endpoints -> both admin and miniapp could never reach it): 5 operator
  endpoints (list/create/update/publish/archive) + 1 user-facing read endpoint.
- Fix privilege escalation: create/update were guarded only by the class-level
  service_location.view, making V015's service_location.manage a never-used dead
  permission -> read-only roles could edit stations. Permissions moved to method level.
- Add ServiceLocationOperatorController to OperatorEndpointPermissionCoverageTest
  (it was NOT scanned, which is why the escalation stayed invisible).
- Add create/update validation (address NOT NULL + status CHECK only blew up on PG).
- Banner: validation failures threw bare RuntimeException -> 500; now VALIDATION_ERROR
  -> 400. Add deleted_at IS NULL to both home queries (soft-deleted banners stayed live).
- Content: operator list/detail split (admin «publish» was a dead end because it reused
  the published-only public API); category deactivate/reactivate; article body on edit.
- Service Program: operator member list now includes pending (approval reachable);
  active-only public visibility (draft leak); memberCount/pendingCount aggregation;
  withdraw/removeMember; reuse row on re-apply (UNIQUE(program_id,user_id) crash).
- MeController: add the missing GET /me/service-history route.

Schema / guards
- schema-h2.sql: add service_location_announcements (+ chk_announcement_status) and
  content_categories (+ uk_content_category_code, chk_category_status); move both into
  REQUIRED_IN_TEST_SCHEMA. MigrationValidationTest baseline 41 -> 42.
- V11PermissionMatrixContractTest now scans ALL migrations instead of hardcoding V015+V029.
- New: ServiceLocationAnnouncementPhase19IntegrationTest (24),
  ServiceLocationControllerPermissionContractTest (5),
  ServiceLocationAnnouncementConstraintParityTest (5, prod DDL <-> test schema <->
  backend whitelist <-> admin labels).

Frontend
- admin-web: ServiceStationView gains announcement management (statuses, create/edit,
  publish/archive with confirm, expiry); write buttons gated by service_location.manage.
- miniapp: U50 renders the 临时公告 block via new serviceStationService; page no longer
  talks to utils/api directly; announcement failure degrades to [] instead of erroring.
- ui-tests: U37 four-group + U50 announcement contracts; /home assertion retargeted to
  the service layer.

Verification
- Negative verification: 3 injected defects (drop soft-delete filter / drop test-schema
  CHECK / downgrade write endpoint to view) -> 4 named tests fail precisely, no
  collateral failures; restored, NEG-VAL residue = 0.
- Backend full regression: 602 tests, 0 failures, 0 errors, 3 skipped (baseline 420).
- admin-web: vue-tsc --noEmit EXIT=0, vite build EXIT=0. Miniapp: tsc --noEmit EXIT=0.
- ui-tests 14/14 PASS.

miniapp/pages/content-detail/content-detail.js

@@ -1 +1,49 @@
-Page({data:{},report(){wx.navigateTo({url:'/pages/report/report?type=content'})},related(){wx.navigateTo({url:'/pages/counseling-intro/counseling-intro'})}})
+/**
+ * U54 内容详情
+ *
+ * Phase 19：此前正文与标题**写死在 wxml**（任何文章都显示同一篇演示内容）。
+ * 现接入 GET /content/articles/{id}，按 id 展示真实正文。
+ *
+ * 边界：用户端内容只做列表与详情，不做 Feed / 评论 / 点赞。
+ */
+const { contentService } = require('../../services');
+
+Page({
+  data: {
+    loading: true,
+    error: '',
+    article: null,
+    paragraphs: [],
+  },
+  onLoad(options) {
+    this.articleId = (options && options.id) || '';
+    this.load();
+  },
+  async load() {
+    if (!this.articleId) {
+      this.setData({ loading: false, error: '未指定内容' });
+      return;
+    }
+    this.setData({ loading: true, error: '' });
+    try {
+      const article = await contentService.getArticleDetail(this.articleId);
+      if (!article) {
+        this.setData({ loading: false, error: '内容不存在或已下架' });
+        return;
+      }
+      const paragraphs = String(article.content || '')
+        .split(/\n+/)
+        .map((line) => line.trim())
+        .filter(Boolean);
+      this.setData({ article, paragraphs, loading: false });
+    } catch (error) {
+      this.setData({ loading: false, error: '加载失败，请稍后重试' });
+    }
+  },
+  report() {
+    wx.navigateTo({ url: '/pages/report/report?type=content' });
+  },
+  related() {
+    wx.navigateTo({ url: '/pages/counseling-intro/counseling-intro' });
+  },
+});

miniapp/pages/content-detail/content-detail.wxml

@@ -1 +1 @@
-<view class="service-page"><view class="hero"><text class="eyebrow">沟通成长 · 阅读约 5 分钟</text><text class="hero-title">第一次见面，怎样自然地开始交流</text><text class="hero-desc">善缘丹阳婚恋课堂</text></view><view class="article-content"><text class="lead">把注意力放在认识一个真实的人，而不是完成一场“面试”。</text><text>初次见面时，可以从当下的环境、共同参与的活动或轻松的生活话题开始。相比连续发问，认真倾听并回应对方刚刚说过的内容，更容易建立平等、自然的交流。</text><text style="display:block;margin-top:28rpx">不必急着判断结果，也不需要过度展示自己。尊重彼此的节奏，在涉及联系方式、住址和财务信息时保留必要边界。</text><view class="notice">本文为公益科普内容，不能替代专业咨询或法律意见。</view></view><view class="content"><view class="block"><text class="block-title">需要进一步帮助？</text><view class="card menu-row" bindtap="related"><view class="feature-icon">咨</view><view class="feature-copy"><text class="feature-title">了解婚恋咨询</text><text class="feature-desc">由咨询人员提供关系与情绪支持</text></view><text class="arrow">›</text></view></view></view></view>
+<view class="service-page"><view wx:if="{{loading}}" class="content"><view class="card empty-panel"><view class="empty-symbol">…</view><text class="empty-title">正在加载</text></view></view><view wx:elif="{{error}}" class="content"><view class="card empty-panel"><view class="empty-symbol">!</view><text class="empty-title">{{error}}</text></view></view><block wx:else><view class="hero"><text class="eyebrow">善缘丹阳婚恋课堂</text><text class="hero-title">{{article.title}}</text><text class="hero-desc">{{article.summary}}</text></view><view class="article-content"><text wx:if="{{article.summary}}" class="lead">{{article.summary}}</text><text wx:for="{{paragraphs}}" wx:key="*this" style="display:block;margin-top:28rpx">{{item}}</text><view class="notice">本文为公益科普内容，不能替代专业咨询或法律意见。</view></view></block><view class="content"><view class="block"><text class="block-title">需要进一步帮助？</text><view class="card menu-row" bindtap="related"><view class="feature-icon">咨</view><view class="feature-copy"><text class="feature-title">了解婚恋咨询</text><text class="feature-desc">由咨询人员提供关系与情绪支持</text></view><text class="arrow">›</text></view><view class="card menu-row" bindtap="report"><view class="feature-icon">报</view><view class="feature-copy"><text class="feature-title">举报不实内容</text><text class="feature-desc">发现虚假或违规信息可提交举报</text></view><text class="arrow">›</text></view></view></view></view>