fix(deepseek): fall back to reasoning "搜索到 XX 个网页" panel for citations

When the standard search-results panel never opens, click the reasoning-chain
"搜索到 N 个网页" affordance to reveal the citation source list, and prefer the
revealed panel links over stale snapshot links so citations point at the right
URLs.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop-client/src/main/adapters/deepseek.test.ts

@@ -1,4 +1,48 @@
-import { describe, expect, it } from "vitest";
+import { describe, expect, it, vi } from "vitest";
+
+vi.mock("electron/main", () => ({
+  app: {
+    getPath: () => "/tmp/geo-rankly-deepseek-test",
+    getVersion: () => "0.0.0-test",
+    isPackaged: false,
+    on: vi.fn(),
+    whenReady: () => Promise.resolve(),
+  },
+  BrowserWindow: vi.fn(),
+  WebContentsView: vi.fn(),
+  ipcMain: {
+    handle: vi.fn(),
+    on: vi.fn(),
+    removeHandler: vi.fn(),
+  },
+  Menu: {
+    buildFromTemplate: vi.fn(() => ({ popup: vi.fn() })),
+    setApplicationMenu: vi.fn(),
+  },
+  Tray: vi.fn(),
+  nativeTheme: {
+    on: vi.fn(),
+    shouldUseDarkColors: false,
+  },
+  safeStorage: {
+    decryptString: vi.fn(),
+    encryptString: vi.fn(),
+    isEncryptionAvailable: () => false,
+  },
+  session: {
+    fromPartition: vi.fn(() => ({
+      cookies: {
+        get: vi.fn(),
+        remove: vi.fn(),
+        set: vi.fn(),
+      },
+      webRequest: {
+        onBeforeSendHeaders: vi.fn(),
+        onHeadersReceived: vi.fn(),
+      },
+    })),
+  },
+}));
 
 import { __deepseekTestUtils } from "./deepseek";
 import { getMonitorAdapter } from "./index";
@@ -11,9 +55,11 @@ const {
   dedupeSourceItems,
   classifyDeepseekSources,
   mergeDeepSeekRawSourceLinks,
+  resolveDeepSeekCitationPanelLinks,
   isObservationComplete,
   isDeepSeekToggleSelected,
   isDeepSeekWebpagesTriggerText,
+  isDeepSeekReasoningSearchTriggerText,
 } = __deepseekTestUtils;
 
 describe("deepseek adapter helpers", () => {
@@ -67,6 +113,74 @@ describe("deepseek adapter helpers", () => {
     expect(classified.searchResults[0]?.url).toBe("https://example.com/search");
   });
 
+  it("uses revealed xx webpages panel links instead of stale snapshot links for citation sources", () => {
+    const citationPanelLinks = resolveDeepSeekCitationPanelLinks(
+      [
+        {
+          url: "https://stale.example/from-snapshot",
+          title: "Stale snapshot result",
+          text: "Wrong result from the page snapshot",
+          siteName: "Stale",
+          kind: "search",
+        },
+      ],
+      [
+        {
+          url: "https://right.example/from-xx-webpages",
+          title: "Right side panel result",
+          text: "Correct result from DeepSeek search results",
+          siteName: "Right",
+          kind: "search",
+        },
+      ],
+    );
+    const classified = classifyDeepseekSources({
+      inlineLinks: [
+        {
+          url: "https://inline.example/body-link",
+          title: "Inline body link",
+          text: "[1]",
+          siteName: "Inline",
+          kind: "inline",
+        },
+      ],
+      sourcePanelLinks: [],
+      searchPanelLinks: citationPanelLinks,
+    });
+
+    expect(citationPanelLinks.map((item) => item.url)).toEqual([
+      "https://right.example/from-xx-webpages",
+    ]);
+    expect(classified.citations.map((item) => item.url)).toEqual([
+      "https://right.example/from-xx-webpages",
+    ]);
+    expect(classified.searchResults.map((item) => item.url)).toEqual([
+      "https://right.example/from-xx-webpages",
+    ]);
+    expect(classified.inlineCitationCandidates.map((item) => item.url)).toEqual([
+      "https://inline.example/body-link",
+    ]);
+  });
+
+  it("falls back to snapshot search links when the revealed xx webpages panel is unavailable", () => {
+    const citationPanelLinks = resolveDeepSeekCitationPanelLinks(
+      [
+        {
+          url: "https://snapshot.example/result",
+          title: "Snapshot result",
+          text: "Fallback result",
+          siteName: "Snapshot",
+          kind: "search",
+        },
+      ],
+      [],
+    );
+
+    expect(citationPanelLinks.map((item) => item.url)).toEqual([
+      "https://snapshot.example/result",
+    ]);
+  });
+
   it("enriches numeric inline citations with source metadata from revealed search cards", () => {
     const classified = classifyDeepseekSources({
       inlineLinks: [
@@ -267,6 +381,12 @@ describe("deepseek adapter helpers", () => {
     expect(isDeepSeekWebpagesTriggerText("搜索到 39 个网页")).toBe(false);
   });
 
+  it("treats reasoning 搜索到 xx 个网页 as a separate citation-source fallback trigger", () => {
+    expect(isDeepSeekReasoningSearchTriggerText("搜索到 30 个网页")).toBe(true);
+    expect(isDeepSeekReasoningSearchTriggerText("57 个网页")).toBe(false);
+    expect(isDeepSeekReasoningSearchTriggerText("已阅读 57 个网页")).toBe(false);
+  });
+
   it("normalizes DeepSeek model labels without mistaking search toggles for models", () => {
     const snapshot = {
       url: "https://chat.deepseek.com/",