feat: 技能收藏与常驻(always-on)支持

- 新增 skill_favorites / skill_always_on 迁移与持久化模型字段
- skills 路由、存储、前端设置页支持收藏与常驻
- 调整摘要中间件与 lead agent 提示词
- 同步岗位 position_sync 及相关配置清理

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

frontend-web/src/components/workspace/settings/skill-settings-page.tsx

@@ -2,6 +2,7 @@
 
 import {
   AlertCircle,
+  Anchor,
   ArchiveIcon,
   ArrowDownUpIcon,
   BookmarkIcon,
@@ -77,6 +78,7 @@ import {
   useGenerateSkillNameZh,
   useInstallSkillUpload,
   useReconcileCustomSkills,
+  useSetSkillAlwaysOn,
   useSetSkillFeatured,
   useSetSkillNameZh,
   useSetSkillPinned,
@@ -84,7 +86,11 @@ import {
   useSkills,
   useValidateSkillUpload,
 } from "@/core/skills/hooks";
-import { usePublishSquares, useViewMode } from "@/core/system-settings/hooks";
+import {
+  usePublishSquares,
+  useSkillCompressionSettings,
+  useViewMode,
+} from "@/core/system-settings/hooks";
 import type { Skill } from "@/core/skills/type";
 import { formatDateTime } from "@/core/utils/datetime";
 import { env } from "@/env";
@@ -181,8 +187,10 @@ function SkillSettingsList({ onClose }: { onClose?: () => void }) {
   const isAdmin = storedAuth?.system_role === "admin";
 
   // Name + tag filtering is resolved server-side via the /api/skills query.
-  // Non-admins get their 岗位 (position) visibility applied (scope=mine): a
-  // position that binds skill tags restricts which skills they can see.
+  // A 岗位 (position) no longer *restricts* the list — it grants skills into the
+  // member's 我的技能 (each such skill comes back with ``favorited: true``), so
+  // the 广场 always shows every visible skill and the 我的 tab includes the
+  // position-granted ones. ``scope`` is kept for API compatibility only.
   const { skills, isLoading, error } = useSkills({
     search,
     tagIds,
@@ -217,7 +225,9 @@ function SkillSettingsList({ onClose }: { onClose?: () => void }) {
       if (isBuiltin || !!skill.published) {
         all.push(skill);
       }
-      if (isOwnedByMe) {
+      // "我的" = skills I own OR skills granted into my collection by my 岗位
+      // (position) — mirroring how favorited agents land in 我的智能体.
+      if (isOwnedByMe || !!skill.favorited) {
         mine.push(skill);
       }
     }
@@ -601,6 +611,8 @@ export function SkillRow({
   const { data: cardPublishSquares } = usePublishSquares();
   const setPinned = useSetSkillPinned();
   const setFeatured = useSetSkillFeatured();
+  const setAlwaysOn = useSetSkillAlwaysOn();
+  const { data: compression } = useSkillCompressionSettings();
   const deleteSkill = useDeleteCustomSkill();
   const duplicateSkillMutation = useDuplicateSkill();
   const [confirmDeleteOpen, setConfirmDeleteOpen] = useState(false);
@@ -620,6 +632,17 @@ export function SkillRow({
   // Admin can edit/delete/unpublish anyone's skill; non-admin only their own.
   const canManage = isCustom && (isOwned || isAdmin);
   const canTogglePublish = canManage && !isBuiltin;
+  // 常驻(免压缩):内置技能仅管理员可设;自定义技能其所有者或管理员可设(与后端一致)。
+  const canSetAlwaysOn = isAdmin || isOwned;
+
+  async function handleToggleAlwaysOn(next: boolean) {
+    try {
+      await setAlwaysOn.mutateAsync({ skillName: skill.name, alwaysOn: next });
+      toast.success(next ? "已设为常驻(免压缩)" : "已取消常驻");
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : String(err));
+    }
+  }
 
   async function handleTogglePublished(next: boolean) {
     // Publishing: prompt for which square to publish into (when configured).
@@ -932,6 +955,27 @@ export function SkillRow({
           />
         </Button>
       )}
+      {compression?.enabled && canSetAlwaysOn && (
+        <Button
+          size="icon"
+          variant="ghost"
+          className={cn(
+            "h-8 w-8 shrink-0",
+            skill.always_on && "text-amber-600 hover:text-amber-700",
+          )}
+          disabled={setAlwaysOn.isPending}
+          onClick={() => void handleToggleAlwaysOn(!skill.always_on)}
+          title={
+            skill.always_on
+              ? "取消常驻(将被压缩,改由 search_skills 检索)"
+              : "设为常驻(免压缩,始终全文注入提示词)"
+          }
+        >
+          <Anchor
+            className={cn("size-3.5", skill.always_on && "fill-current")}
+          />
+        </Button>
+      )}
       {canTogglePublish && (
         <Button
           size="icon"