feat(agent): Agent 工作台 - 计划插话记忆、统一模型选择器并修复摘要与视频入库

将计划清单、运行中插话和个人记忆接入云端 Agent；全站模型选择器统一为左右二级菜单。画布摘要按预算截断不再整轮拒绝，首页视频未知宽高可入库。README 补充贡献者 morrow。

Co-authored-by: Cursor <cursoragent@cursor.com>

web/test/asset-record.test.ts

@@ -57,3 +57,35 @@ describe("parseAssetRecord", () => {
         expect(() => parseAssetRecordList([{ ...completeImage, id: "bad", tags: undefined }])).toThrow(/素材 bad/);
     });
 });
+
+const completeVideo = {
+    id: "video-1",
+    kind: "video",
+    title: "生成视频",
+    coverUrl: "https://example.com/a.mp4",
+    tags: ["生成"],
+    createdAt: "2026-08-29T00:00:00.000Z",
+    updatedAt: "2026-08-29T00:00:00.000Z",
+    data: { url: "https://example.com/a.mp4", width: 720, height: 1280, bytes: 1, mimeType: "video/mp4" },
+};
+
+describe("parseAssetRecord 视频尺寸", () => {
+    test("宽高未知（0）放行，视频照常入库", () => {
+        const parsed = parseAssetRecord({ ...completeVideo, data: { ...completeVideo.data, width: 0, height: 0 } });
+        expect(parsed.kind).toBe("video");
+        if (parsed.kind === "video") {
+            expect(parsed.data.width).toBe(0);
+            expect(parsed.data.height).toBe(0);
+        }
+    });
+
+    test("负数与非法值仍然拒", () => {
+        expect(() => parseAssetRecord({ ...completeVideo, data: { ...completeVideo.data, width: -1 } })).toThrow(/width/);
+        expect(() => parseAssetRecord({ ...completeVideo, data: { ...completeVideo.data, height: Number.NaN } })).toThrow(/height/);
+        expect(() => parseAssetRecord({ ...completeVideo, data: { ...completeVideo.data, width: "720" } })).toThrow(/width/);
+    });
+
+    test("图片不受影响：零尺寸仍然拒", () => {
+        expect(() => parseAssetRecord({ ...completeImage, data: { ...completeImage.data, width: 0, height: 1 } })).toThrow(/width/);
+    });
+});