fix: preserve claw skill tag settings on upgrades

lib/canvas-skill-tags.ts

@@ -222,17 +222,6 @@ export function normalizeCanvasSkillTags(value: unknown): CanvasSkillTag[] {
   return normalized.slice(0, 30);
 }
 
-function mergeCanvasSkillTagsWithDefaultUpdates(value: unknown): CanvasSkillTag[] {
-  const currentTags = normalizeCanvasSkillTags(value);
-  const currentIds = new Set(currentTags.map((tag) => tag.id));
-  const missingDefaultTags = DEFAULT_CANVAS_SKILL_TAGS.filter(
-    (defaultTag) => !currentIds.has(defaultTag.id)
-  );
-  const merged: CanvasSkillTag[] = [...currentTags, ...missingDefaultTags];
-
-  return normalizeCanvasSkillTags(merged);
-}
-
 export function normalizeCanvasSkillTagSettings(
   value: unknown,
   options: { requireCurrentVersion?: boolean } = {}
@@ -254,7 +243,7 @@ export function normalizeCanvasSkillTagSettings(
       return {
         enabled: row.enabled !== false,
         title,
-        tags: mergeCanvasSkillTagsWithDefaultUpdates(row.tags),
+        tags: normalizeCanvasSkillTags(row.tags),
         version: CANVAS_SKILL_TAGS_CONFIG_VERSION,
       };
     }

tests/routes/admin-settings.test.ts

@@ -1,4 +1,9 @@
 import { expect, test } from "@playwright/test";
+import {
+  DEFAULT_CANVAS_SKILL_TAGS,
+  normalizeCanvasSkillTagSettings,
+  type CanvasSkillTag,
+} from "@/lib/canvas-skill-tags";
 import {
   defaultProductPlanningApiConfig,
   normalizeProductPlanningApiConfig,
@@ -155,4 +160,40 @@ test.describe.serial("/api/admin/settings", () => {
       "http://103.118.245.6:6081/v1"
     );
   });
+
+  test("canvas skill tag upgrades preserve admin configured tags without restoring defaults", () => {
+    const customTags: CanvasSkillTag[] = [
+      {
+        id: "custom-claw-skill",
+        name: "自定义技能",
+        prompt: "只保留后台手动配置的技能。",
+        placeholder: "后台手动配置",
+        iconName: "message-circle",
+      },
+    ];
+
+    const normalized = normalizeCanvasSkillTagSettings(
+      {
+        enabled: true,
+        title: "试试这些 Skills",
+        tags: customTags,
+        version: 1,
+      },
+      { requireCurrentVersion: true }
+    );
+
+    expect(normalized.title).toBe("试试这些 Skills");
+    expect(normalized.tags).toEqual(customTags);
+    expect(
+      normalized.tags.some((tag) => tag.id === "promotion-diagnosis-db")
+    ).toBe(false);
+  });
+
+  test("canvas skill tags still use defaults when no stored setting exists", () => {
+    const normalized = normalizeCanvasSkillTagSettings(null, {
+      requireCurrentVersion: true,
+    });
+
+    expect(normalized.tags).toEqual(DEFAULT_CANVAS_SKILL_TAGS);
+  });
 });