fix(xss+perf): SearchView XSS消除(无v-html)+room_id索引+pool_recycle

- SearchView.vue: 用 highlightSegments() 返回 {text,hit} 数组替代 v-html+escapeHtml+regex,模板用 <template v-for> + <mark>/<span> 渲染,从结构上消除 XSS 风险(4 处 v-html 全部移除: 消息片段/客户昵称/realName/手机号)
- models.py: Message 新增 ix_message_channel_owner_room_time(channel,owner_account_id,room_id,timestamp),群聊查询过滤 room_id 而非 talker_id,原 talker 索引无法覆盖
- migrations/d8eee96cd017: 新增 room_id 索引的 upgrade/downgrade (offline SQL 已验证)
- base.py + scheduler.py + cli.py: 所有生产 create_async_engine 增加 pool_recycle=3600,在 MySQL wait_timeout(默认 8h)断连前主动回收

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

yunkes/src/views/SearchView.vue

@@ -79,33 +79,35 @@ function imageCell(row: Customer, camelKey: string): string | undefined {
 const hasSearched = computed(() => submittedQ.value.length > 0)
 
 /**
- * Highlight occurrences of the keyword inside `text`. Returns HTML with
- * matches wrapped in `<mark class="yk-search__hit">`. Escapes the surrounding
- * text so user content can't break out of the snippet. Empty / no-match input
- * returns the escaped plain text.
+ * Split `text` into segments, marking ones that match the active keyword.
+ * The template renders each segment via `<mark>` / `<span>` — NO v-html, so
+ * user content cannot break out of the snippet (XSS-safe by construction).
+ * Empty needle → single non-hit segment. Matching is case-insensitive; the
+ * original case is preserved in the output text.
  */
-function highlight(text: string | null | undefined): string {
-  const needle = submittedQ.value.trim()
-  const body = text ?? ''
-  if (!body) return ''
-  const escaped = escapeHtml(body)
-  if (!needle) return escaped
-  const needleEsc = escapeHtml(needle)
-  // Escape regex metacharacters in the needle so a literal search is performed.
-  const needleRegex = needleEsc.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
-  return escaped.replace(
-    new RegExp(needleRegex, 'gi'),
-    (m) => `<mark class="yk-search__hit">${m}</mark>`,
-  )
+interface HighlightSegment {
+  text: string
+  hit: boolean
 }
 
-function escapeHtml(s: string): string {
-  return s
-    .replaceAll('&', '&amp;')
-    .replaceAll('<', '&lt;')
-    .replaceAll('>', '&gt;')
-    .replaceAll('"', '&quot;')
-    .replaceAll("'", '&#39;')
+function highlightSegments(text: string | null | undefined): HighlightSegment[] {
+  const body = text ?? ''
+  if (!body) return []
+  const needle = submittedQ.value.trim()
+  if (!needle) return [{ text: body, hit: false }]
+  const lower = body.toLowerCase()
+  const needleLower = needle.toLowerCase()
+  const segments: HighlightSegment[] = []
+  let lastIdx = 0
+  let idx = lower.indexOf(needleLower)
+  while (idx >= 0) {
+    if (idx > lastIdx) segments.push({ text: body.slice(lastIdx, idx), hit: false })
+    segments.push({ text: body.slice(idx, idx + needle.length), hit: true })
+    lastIdx = idx + needle.length
+    idx = lower.indexOf(needleLower, lastIdx)
+  }
+  if (lastIdx < body.length) segments.push({ text: body.slice(lastIdx), hit: false })
+  return segments
 }
 
 /** Snippet preview window around the first match (or the start of text). */
@@ -364,10 +366,12 @@ nextTick(() => {
               </span>
               <span class="yk-search__row-time">{{ formatTime(m.timestamp) }}</span>
             </div>
-            <div
-              class="yk-search__row-snippet"
-              v-html="highlight(snippet(m.text))"
-            />
+            <div class="yk-search__row-snippet">
+              <template v-for="(seg, i) in highlightSegments(snippet(m.text))">
+                <mark v-if="seg.hit" :key="`m${i}`" class="yk-search__hit">{{ seg.text }}</mark>
+                <span v-else :key="`s${i}`">{{ seg.text }}</span>
+              </template>
+            </div>
           </div>
         </div>
 
@@ -415,18 +419,24 @@ nextTick(() => {
             </el-avatar>
             <div class="yk-search__row-body">
               <div class="yk-search__row-top">
-                <span
-                  class="yk-search__row-sender"
-                  v-html="highlight(c.friend_nickname ?? c.friend_id)"
-                />
+                <span class="yk-search__row-sender">
+                  <template v-for="(seg, i) in highlightSegments(c.friend_nickname ?? c.friend_id)">
+                    <mark v-if="seg.hit" :key="`m${i}`" class="yk-search__hit">{{ seg.text }}</mark>
+                    <span v-else :key="`s${i}`">{{ seg.text }}</span>
+                  </template>
+                </span>
                 <el-tag :type="channelTagType(c.channel)" size="small" effect="plain">
                   {{ channelLabel(c.channel) }}
                 </el-tag>
                 <span
                   v-if="cellText(c, 'realName') !== '--'"
                   class="yk-search__row-target"
-                  v-html="highlight(cellText(c, 'realName'))"
-                />
+                >
+                  <template v-for="(seg, i) in highlightSegments(cellText(c, 'realName'))">
+                    <mark v-if="seg.hit" :key="`m${i}`" class="yk-search__hit">{{ seg.text }}</mark>
+                    <span v-else :key="`s${i}`">{{ seg.text }}</span>
+                  </template>
+                </span>
                 <span class="yk-search__row-time">
                   最近聊天 {{ formatTime(c.last_chat_time) }}
                 </span>
@@ -434,7 +444,10 @@ nextTick(() => {
               <div class="yk-search__row-meta">
                 <span v-if="cellText(c, 'phone') !== '--'">
                   手机：
-                  <span v-html="highlight(cellText(c, 'phone'))" />
+                  <template v-for="(seg, i) in highlightSegments(cellText(c, 'phone'))">
+                    <mark v-if="seg.hit" :key="`m${i}`" class="yk-search__hit">{{ seg.text }}</mark>
+                    <span v-else :key="`s${i}`">{{ seg.text }}</span>
+                  </template>
                 </span>
                 <span v-if="cellText(c, 'friendWxAlias') !== '--'">
                   · 微信号：{{ cellText(c, 'friendWxAlias') }}
@@ -684,7 +697,9 @@ nextTick(() => {
   gap: 8px;
 }
 
-/* Match highlight — uses :deep so v-html <mark> picks it up despite `scoped`. */
+/* Match highlight — `<mark>` elements are rendered in this template, so they
+ * carry the scoped attribute; `:deep` is retained so the rule still applies if
+ * the markup ever moves into a child component. */
 .yk-search__list :deep(.yk-search__hit) {
   background: var(--el-color-warning-light-7, #fdf6ec);
   color: var(--el-color-warning-dark-2, #b88230);