fix(doubao): submit only verified SSE answers and harden source extraction

Rework the Doubao monitor adapter so success answers come exclusively from
CHUNK_DELTA SSE text and require an SSE_REPLY_END finish event — DOM fallbacks
and FULL_MSG_NOTIFY user echoes can no longer pose as the model reply. Also
auto-switch to the 思考 answer mode, repair mixed-mojibake fragments per run,
unwrap Doubao redirect URLs, scrub "unknown" source metadata, recover from
mid-query navigation by returning unknown for retry, and surface stream/finish
counters in diagnostics.

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

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

@@ -8,6 +8,7 @@ const {
   isNonCitationAssetDomain,
   isNonCitationAssetUrl,
   parseDoubaoStreamBody,
+  resolveDoubaoSubmissionAnswer,
 } = __doubaoTestUtils
 
 describe('doubao adapter helpers', () => {
@@ -59,4 +60,167 @@ describe('doubao adapter helpers', () => {
       ]),
     ).toHaveLength(1)
   })
+
+  it('uses thinking-chain reference metadata to fill unknown Doubao source titles', () => {
+    const body = [
+      'event: STREAM_CHUNK',
+      'data: {"references":[{"url":"https://example.com/report","title":"unkown"}],"thinking":{"references":[{"url":"https://example.com/report#section","title":"思考链路里的真实标题","site_name":"示例站点"}]},"text_block":{"text":"回答"}}',
+      '',
+      '',
+    ].join('\n')
+
+    const summary = parseDoubaoStreamBody(body)
+
+    expect(summary.search_results).toHaveLength(1)
+    expect(summary.search_results[0]?.url).toBe('https://example.com/report')
+    expect(summary.search_results[0]?.title).toBe('思考链路里的真实标题')
+    expect(summary.search_results[0]?.site_name).toBe('示例站点')
+  })
+
+  it('unwraps Doubao redirect URLs before storing citation sources', () => {
+    const item = buildSourceItem({
+      url: 'https://www.doubao.com/link?target=https%3A%2F%2Fexample.com%2Fsource%23ref',
+      title: 'unknown',
+    })
+
+    expect(item).toMatchObject({
+      url: 'https://example.com/source',
+      normalized_url: 'https://example.com/source',
+      host: 'example.com',
+      title: null,
+    })
+  })
+
+  it('parses Doubao answer deltas and source cards from the completion SSE stream', () => {
+    const sourceChunkPayload = {
+      patch_op: [
+        {
+          patch_value: {
+            content_block: [
+              {
+                block_type: 10025,
+                content: {
+                  search_query_result_block: {
+                    results: [
+                      {
+                        text_card: {
+                          url: 'https://k.sina.cn/article_3244012052_c15bb21400101k0hg.html',
+                          title: '2026年合肥全屋定制品牌综合实力排名出炉',
+                          sitename: '新浪',
+                          logo_url: 'https://p11-spider-image-sign.byteimg.com/logo.jpeg',
+                        },
+                      },
+                    ],
+                  },
+                },
+              },
+            ],
+          },
+        },
+      ],
+    }
+    const body = [
+      'event: SSE_ACK',
+      'data: {"ack_client_meta":{"conversation_id":"38427686224603138","section_id":"38427686224603394"}}',
+      '',
+      'event: FULL_MSG_NOTIFY',
+      'data: {"message":{"content":"用户问题 echo，不是答案","conversation_id":"38427686224603138"}}',
+      '',
+      'event: STREAM_CHUNK',
+      `data: ${JSON.stringify(sourceChunkPayload)}`,
+      '',
+      'event: CHUNK_DELTA',
+      'data: {"text":"直接给你"}',
+      '',
+      'event: CHUNK_DELTA',
+      'data: {"text":"一份清单。"}',
+      '',
+      'event: SSE_REPLY_END',
+      'data: {"end_type":2,"answer_finish_attr":{"has_suggest":true}}',
+      '',
+      '',
+    ].join('\n')
+
+    const summary = parseDoubaoStreamBody(body)
+
+    expect(summary.answer).toBe('直接给你一份清单。')
+    expect(summary.conversation_id).toBe('38427686224603138')
+    expect(summary.full_message_event_count).toBe(1)
+    expect(summary.reply_end_event_count).toBe(1)
+    expect(summary.answer_finish_event_count).toBe(1)
+    expect(summary.search_results).toHaveLength(1)
+    expect(summary.search_results[0]).toMatchObject({
+      url: 'https://k.sina.cn/article_3244012052_c15bb21400101k0hg.html',
+      title: '2026年合肥全屋定制品牌综合实力排名出炉',
+      site_name: '新浪',
+      host: 'k.sina.cn',
+    })
+  })
+
+  it('repairs mixed Doubao mojibake fragments before returning the SSE answer', () => {
+    const body = [
+      'event: CHUNK_DELTA',
+      'data: {"text":"需要合肥地区全屋定制推荐，"}',
+      '',
+      'event: CHUNK_DELTA',
+      'data: {"text":"综合考量性价比、口碑服务等因素。2000㎡展厅，核验批号。"}',
+      '',
+      'event: SSE_REPLY_END',
+      'data: {"end_type":2,"answer_finish_attr":{"has_suggest":true}}',
+      '',
+      '',
+    ].join('\n')
+
+    const summary = parseDoubaoStreamBody(body)
+
+    expect(summary.answer).toBe(
+      '需要合肥地区全屋定制推荐，综合考量性价比、口碑服务等因素。2000㎡展厅，核验批号。',
+    )
+    expect(summary.answer).not.toMatch(/[åæèéäãï][\u0080-\u00ff\u02c0-\u02ff\u2000-\u20ff]/)
+    expect(resolveDoubaoSubmissionAnswer({ answer: summary.answer })).toEqual({
+      answer:
+        '需要合肥地区全屋定制推荐，综合考量性价比、口碑服务等因素。2000㎡展厅，核验批号。',
+      source: 'sse',
+    })
+  })
+
+  it('does not treat FULL_MSG_NOTIFY user echo as the Doubao answer', () => {
+    const body = [
+      'event: FULL_MSG_NOTIFY',
+      'data: {"message":{"content":"合肥全屋定制哪家好"}}',
+      '',
+      'event: SSE_REPLY_END',
+      'data: {"end_type":2,"answer_finish_attr":{"has_suggest":true}}',
+      '',
+      '',
+    ].join('\n')
+
+    const summary = parseDoubaoStreamBody(body)
+
+    expect(summary.answer).toBeNull()
+    expect(summary.full_message_event_count).toBe(1)
+    expect(summary.answer_finish_event_count).toBe(1)
+  })
+
+  it('submits only SSE answer text, without reasoning fallback', () => {
+    expect(
+      resolveDoubaoSubmissionAnswer({
+        answer: 'SSE 正文答案',
+      }),
+    ).toEqual({
+      answer: 'SSE 正文答案',
+      source: 'sse',
+    })
+  })
+
+  it('does not submit a success answer when the SSE stream has no answer text', () => {
+    expect(
+      resolveDoubaoSubmissionAnswer({
+        answer: null,
+      }),
+    ).toEqual({
+      answer: null,
+      source: null,
+    })
+  })
 })