fix(plugins): 插件管理 - 修正官方应用插件的分类与状态显示

AI 审美分析和剪辑工作台在管理页显示为"已停用"，原因是三处插件
分类清单不一致：

- 后端 officialApplicationPolicies 缺少 editor-shell
- 管理页 officialApplicationIds 同时缺少 ai-art-critique 和 editor-shell
- 用户插件页另有一份重复清单

后端把这两个插件当作系统协议处理（Kind=protocol），platformAvailable
回退为 false，于是返回"管理员已停用该插件"，管理页据此渲染成"已停用"。

修复：

- 后端补上 editor-shell 应用策略（权威修复，决定平台可用性）
- 前端抽取唯一清单 OFFICIAL_APPLICATION_PLUGIN_IDS，管理页与用户插件页
  共用，删除两份重复实现
- 补前后端回归测试，锁定这 8 个官方应用插件

验证：tsc --noEmit 通过；前端 17 项测试通过；后端 TestEditorShell* 与
既有插件测试通过；前后端镜像构建通过。

web/test/official-application-plugins.test.ts

@@ -0,0 +1,52 @@
+import { describe, expect, test } from "bun:test";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+import {
+    OFFICIAL_APPLICATION_PLUGIN_IDS,
+    isOfficialApplicationPluginId,
+} from "../src/lib/plugins/official-applications";
+
+describe("official application plugin classification", () => {
+    test("covers every built-in application plugin, including editor and art critique", () => {
+        // Regression: the admin plugin page kept its own list and missed these
+        // two, so both rendered as disabled system protocols.
+        expect(isOfficialApplicationPluginId("editor-shell")).toBe(true);
+        expect(isOfficialApplicationPluginId("ai-art-critique")).toBe(true);
+        expect(isOfficialApplicationPluginId("portrait-clearance")).toBe(true);
+        expect(isOfficialApplicationPluginId("media-conversion")).toBe(true);
+        expect(isOfficialApplicationPluginId("prompt-optimizer")).toBe(true);
+        expect(isOfficialApplicationPluginId("eagle-asset-connector")).toBe(true);
+        expect(isOfficialApplicationPluginId("runninghub-workflow-provider")).toBe(true);
+        expect(isOfficialApplicationPluginId("comfyui-workflow-provider")).toBe(true);
+    });
+
+    test("does not treat uploaded or unknown plugins as official applications", () => {
+        expect(isOfficialApplicationPluginId("some-uploaded-plugin")).toBe(false);
+        expect(isOfficialApplicationPluginId("")).toBe(false);
+    });
+
+    test("exposes a single de-duplicated id list", () => {
+        const ids = [...OFFICIAL_APPLICATION_PLUGIN_IDS];
+        expect(new Set(ids).size).toBe(ids.length);
+        expect(ids.length).toBe(8);
+    });
+
+    test("both plugin pages consume the shared list instead of a local copy", () => {
+        const adminPage = readFileSync(
+            resolve(import.meta.dir, "../src/pages/admin/plugins/plugins-page.tsx"),
+            "utf8",
+        );
+        const userPage = readFileSync(
+            resolve(import.meta.dir, "../src/pages/plugins/index.tsx"),
+            "utf8",
+        );
+
+        expect(adminPage).toContain("isOfficialApplicationPluginId");
+        expect(userPage).toContain("isOfficialApplicationPluginId");
+
+        // No page may reintroduce a hand-maintained id array.
+        expect(adminPage).not.toContain("const officialApplicationIds = new Set([");
+        expect(userPage).not.toContain("function isOfficialApplicationPlugin(pluginId: string) {");
+    });
+});