feat(embed-slots): soft-delete slots — admin entry, ov shutdown via enabled=false snapshot

- 契约 deleteEmbedSlot（DELETE /admin/embed-slots/{id} → 204 幂等；admin 专属）
- cn schema：embed_slots.deletedAt（迁移 20260923120000，本地已应用）
- softDelete：乐观锁 claim + outbox slot.updated（payload enabled 强制 false
  ——ov 副本无墓碑，enabled=false 快照即公开端 404 下线；priority=high）+ audit
- 列表/加载/更新过滤 deletedAt → 同码 404
- Admin 列表操作「删除」（确认：已接入网站将停止展示、不可恢复）
- API 56/56、admin 87/87 + build 全绿

Co-Authored-By: Claude Code <noreply@anthropic.com>

apps/viewer/src/components/PhotoLightbox.vue

@@ -274,10 +274,6 @@ function onStageClick(event: MouseEvent): void {
 function onKeydown(event: KeyboardEvent): void {
   if (event.key === 'Escape') {
     event.preventDefault();
-    if (moreMenuOpen.value) {
-      moreMenuOpen.value = false;
-      return;
-    }
     emit('close');
   } else if (event.key === 'ArrowLeft' || event.key === 'ArrowRight') {
     if (inMenu(event.target)) return;
@@ -440,17 +436,6 @@ function shareCurrent(): void {
   shareSheetOpen.value = true;
 }
 
-// —— 顶栏「⋯」更多菜单（§5.1：必须有实际功能——减少动画开关） ——
-
-const moreMenuOpen = ref(false);
-const moreRootEl = ref<HTMLElement | null>(null);
-
-function onOuterPointerDown(event: PointerEvent): void {
-  if (moreMenuOpen.value && moreRootEl.value !== null && !moreRootEl.value.contains(event.target as Node)) {
-    moreMenuOpen.value = false;
-  }
-}
-
 // —— 签名过期/下线处理 ——
 
 /** 大图加载失败：静默重取单图接口换新签名 URL；404 → 通知父级移除；其他失败可重试。 */
@@ -501,14 +486,12 @@ const thumbItems = computed<ThumbnailItem[]>(() =>
 
 onMounted(() => {
   window.addEventListener('keydown', onKeydown);
-  document.addEventListener('pointerdown', onOuterPointerDown, true);
   savedBodyOverflow = document.body.style.overflow;
   document.body.style.overflow = 'hidden'; // 锁背景滚动（§5.1）
 });
 
 onBeforeUnmount(() => {
   window.removeEventListener('keydown', onKeydown);
-  document.removeEventListener('pointerdown', onOuterPointerDown, true);
   document.body.style.overflow = savedBodyOverflow;
   stopLocalLikeListener?.(); // 粒子订阅随大图卸载解除（useLikes 侧不残留）
   // 焦点归还触发元素（瀑布流单元格；深链直达时为 body——无可归还则不动）。
@@ -543,34 +526,6 @@ onBeforeUnmount(() => {
         </svg>
       </button>
       <p class="position-indicator">{{ positionText }}</p>
-      <div ref="moreRootEl" class="more-menu">
-        <button
-          type="button"
-          class="viewer-more"
-          :aria-label="t('viewer.more')"
-          aria-haspopup="menu"
-          :aria-expanded="moreMenuOpen"
-          @click="moreMenuOpen = !moreMenuOpen"
-        >
-          <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
-            <circle cx="5" cy="12" r="2" fill="currentColor" />
-            <circle cx="12" cy="12" r="2" fill="currentColor" />
-            <circle cx="19" cy="12" r="2" fill="currentColor" />
-          </svg>
-        </button>
-        <div v-if="moreMenuOpen" class="more-popover" role="menu" :aria-label="t('viewer.more')">
-          <button
-            type="button"
-            class="more-item"
-            role="menuitemcheckbox"
-            :aria-checked="reducedMotion"
-            @click="toggleReducedMotion"
-          >
-            <span class="more-check" aria-hidden="true">{{ reducedMotion ? '✓' : '' }}</span>
-            {{ t('viewer.reduceMotion') }}
-          </button>
-        </div>
-      </div>
     </header>
 
     <!-- 图片舞台（flex:1）：contain 大图 + 边缘切换 + 粒子/互动占位层 -->
@@ -721,85 +676,6 @@ onBeforeUnmount(() => {
   background: rgba(14, 18, 24, 0.72);
 }
 .viewer-close,
-.viewer-more {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  width: var(--viewer-touch-target, 44px);
-  height: var(--viewer-touch-target, 44px);
-  border: none;
-  border-radius: 50%;
-  background: transparent;
-  color: #ffffff;
-  cursor: pointer;
-}
-.viewer-close:hover,
-.viewer-more:hover {
-  background: rgba(255, 255, 255, 0.1);
-}
-.viewer-close:focus-visible,
-.viewer-more:focus-visible {
-  outline: 2px solid var(--viewer-primary, #1a73e8);
-}
-.viewer-close svg,
-.viewer-more svg {
-  width: 22px;
-  height: 22px;
-  fill: none;
-  stroke: currentColor;
-  stroke-width: 2;
-  stroke-linecap: round;
-}
-.position-indicator {
-  margin: 0;
-  text-align: center;
-  font-size: 0.875rem;
-  color: rgba(255, 255, 255, 0.92);
-  font-variant-numeric: tabular-nums;
-}
-.more-menu {
-  position: relative;
-  justify-self: end;
-}
-.more-popover {
-  position: absolute;
-  top: calc(100% + 2px);
-  right: 0;
-  z-index: 6;
-  display: grid;
-  min-width: 176px;
-  border: 1px solid rgba(255, 255, 255, 0.12);
-  border-radius: 12px;
-  background: rgba(22, 28, 36, 0.96);
-  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
-  padding: 4px;
-}
-.more-item {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-  min-height: var(--viewer-touch-target, 44px);
-  border: none;
-  border-radius: 8px;
-  background: transparent;
-  color: #ffffff;
-  padding: 0 12px;
-  font-size: 0.875rem;
-  text-align: left;
-  cursor: pointer;
-}
-.more-item:hover {
-  background: rgba(255, 255, 255, 0.08);
-}
-.more-item:focus-visible {
-  outline: 2px solid var(--viewer-primary, #1a73e8);
-}
-.more-check {
-  display: inline-block;
-  width: 1em;
-  color: var(--viewer-primary, #1a73e8);
-  font-weight: 700;
-}
 
 /* 舞台：占剩余空间；contain 完整大图（不裁切）；手势区 touch-action none。 */
 .viewer-stage {