feat: 推荐问题配置支持按标签搜索并在列表展示标签

- 后端列表接口为每个推荐问题附带 tags，并支持 tag_ids OR 过滤
- 前端配置页新增 TagSearchBar(标题/内容搜索 + 标签筛选)，卡片展示标签
- 打标签后失效 recommended-questions 查询，列表即时刷新
- 过滤时禁用拖拽排序，避免破坏 sort_order

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend-web/src/core/recommended-questions/index.ts

@@ -1,8 +1,12 @@
+import type { Tag } from "@/core/tags";
+
 export interface RecommendedQuestion {
   id: string;
   title: string;
   content: string;
   sort_order: number;
+  /** Tags assigned to this question (按岗位分发标签). */
+  tags?: Tag[];
   created_at?: string;
   updated_at?: string;
 }

frontend-web/src/core/tags/hooks.ts

@@ -83,6 +83,7 @@ export function useSetResourceTags() {
       void queryClient.invalidateQueries({ queryKey: ["skills"] });
       void queryClient.invalidateQueries({ queryKey: ["agents"] });
       void queryClient.invalidateQueries({ queryKey: ["scheduled-tasks"] });
+      void queryClient.invalidateQueries({ queryKey: ["recommended-questions"] });
     },
   });
 }

frontend-web/src/pages/RecommendedQuestionsPage.tsx

@@ -15,6 +15,8 @@ import { toast } from "sonner";
 
 import { Button } from "@/components/ui/button";
 import { ResourceTagDialog } from "@/components/workspace/tags/resource-tag-dialog";
+import { TagChipList } from "@/components/workspace/tags/tag-chip";
+import { TagSearchBar } from "@/components/workspace/tags/tag-search-bar";
 import { useTheme } from "@/contexts/ThemeContext";
 import {
   Dialog,
@@ -83,6 +85,25 @@ export default function RecommendedQuestionsPage({
   const [dragIndex, setDragIndex] = useState<number | null>(null);
   const [dragOverIndex, setDragOverIndex] = useState<number | null>(null);
 
+  // 名称 / 标签搜索
+  const [search, setSearch] = useState("");
+  const [tagIds, setTagIds] = useState<string[]>([]);
+
+  const isFiltering = search.trim() !== "" || tagIds.length > 0;
+  const needle = search.trim().toLowerCase();
+  const visibleQuestions = isFiltering
+    ? questions.filter((q) => {
+        const matchesText =
+          needle === "" ||
+          q.title.toLowerCase().includes(needle) ||
+          q.content.toLowerCase().includes(needle);
+        const matchesTags =
+          tagIds.length === 0 ||
+          (q.tags ?? []).some((t) => tagIds.includes(t.id));
+        return matchesText && matchesTags;
+      })
+    : questions;
+
   function openAdd() {
     setFormTitle("");
     setFormContent("");
@@ -203,6 +224,16 @@ export default function RecommendedQuestionsPage({
         </Button>
       </div>
 
+      {!isLoading && !error && questions.length > 0 && (
+        <TagSearchBar
+          targetType="recommended_question"
+          searchPlaceholder="搜索标题 / 内容"
+          onSearchChange={setSearch}
+          tagIds={tagIds}
+          onTagIdsChange={setTagIds}
+        />
+      )}
+
       {isLoading ? (
         <div className="flex items-center justify-center py-16">
           <Loader2Icon className="text-muted-foreground size-6 animate-spin" />
@@ -219,15 +250,19 @@ export default function RecommendedQuestionsPage({
             添加第一个问题
           </Button>
         </div>
+      ) : visibleQuestions.length === 0 ? (
+        <div className="text-muted-foreground flex flex-col items-center gap-3 rounded-xl border border-dashed py-16 text-sm dark:text-[#7FACF2] dark:!border-[#213F62]">
+          <p>没有匹配的推荐问题</p>
+        </div>
       ) : (
         <div className="flex flex-col gap-2 ">
-          {questions.map((q, index) => (
+          {visibleQuestions.map((q, index) => (
             <div
               key={q.id}
-              draggable
-              onDragStart={() => handleDragStart(index)}
-              onDragOver={(e) => handleDragOver(e, index)}
-              onDrop={() => handleDrop(index)}
+              draggable={!isFiltering}
+              onDragStart={() => !isFiltering && handleDragStart(index)}
+              onDragOver={(e) => !isFiltering && handleDragOver(e, index)}
+              onDrop={() => !isFiltering && handleDrop(index)}
               onDragEnd={() => {
                 setDragIndex(null);
                 setDragOverIndex(null);
@@ -238,7 +273,13 @@ export default function RecommendedQuestionsPage({
                   : "border-[#e4e4e7]"
               }`}
             >
-              <GripVerticalIcon className="text-muted-foreground/40 mt-0.5 size-4 shrink-0 cursor-grab active:cursor-grabbing dark:text-[#566B7F]" />
+              <GripVerticalIcon
+                className={`text-muted-foreground/40 mt-0.5 size-4 shrink-0 dark:text-[#566B7F] ${
+                  isFiltering
+                    ? "cursor-not-allowed opacity-40"
+                    : "cursor-grab active:cursor-grabbing"
+                }`}
+              />
               <div className="min-w-0 flex-1">
                 <div className="truncate text-sm font-medium text-[#18181b] dark:text-white">
                   {q.title}
@@ -246,6 +287,9 @@ export default function RecommendedQuestionsPage({
                 <div className="text-muted-foreground mt-0.5 line-clamp-2 text-xs dark:text-[#7FACF2]">
                   {q.content}
                 </div>
+                {(q.tags?.length ?? 0) > 0 && (
+                  <TagChipList tags={q.tags!} className="mt-2" />
+                )}
               </div>
               <div className="flex shrink-0 items-center gap-1">
                 <Button