feat(monitoring): add DeepSeek monitoring end-to-end

- desktop: new DeepSeek page adapter and monitor registry
- desktop: extract generic AI auth helpers into shared module and
  skip binding when challenge signals are present
- admin-web: render DeepSeek HTML answers with inline citation anchors
  and surface reference-number badges on source cards
- server: fall back to inline_links/source_panel_links and read
  text/siteName fields when extracting DeepSeek citations

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

server/internal/tenant/app/monitoring_callback_service_test.go

@@ -68,6 +68,30 @@ func TestBuildMonitoringRawPayloadQwenIncludesSearchResultsInCitationInputs(t *t
 	}
 }
 
+func TestBuildMonitoringRawPayloadDeepSeekIncludesSearchResultsInCitationInputs(t *testing.T) {
+	searchTitle := "搜索网页结果"
+
+	req := MonitoringTaskResultRequest{
+		Status: "succeeded",
+		SearchResults: []MonitoringSourceItem{
+			{
+				URL:   "https://example.com/search",
+				Title: &searchTitle,
+			},
+		},
+	}
+
+	_, sourceInputs := buildMonitoringRawPayload("deepseek", req)
+	if len(sourceInputs) != 1 {
+		t.Fatalf("buildMonitoringRawPayload() sourceInputs len = %d, want 1", len(sourceInputs))
+	}
+	for _, item := range sourceInputs {
+		if item.URL != "https://example.com/search" {
+			t.Fatalf("buildMonitoringRawPayload() source url = %q, want search url", item.URL)
+		}
+	}
+}
+
 func TestExtractMonitoringInlineCitationsFromRawResponseKimi(t *testing.T) {
 	raw := []byte(`{
 		"inline_citation_candidates": [
@@ -100,3 +124,34 @@ func TestExtractMonitoringInlineCitationsFromRawResponseKimi(t *testing.T) {
 		t.Fatalf("extractMonitoringInlineCitationsFromRawResponse() second url = %q, want https://example.com/b", items[1].URL)
 	}
 }
+
+func TestExtractMonitoringInlineCitationsFromRawResponseDeepSeekFallsBackToInlineLinks(t *testing.T) {
+	raw := []byte(`{
+		"inline_links": [
+			{
+				"url": "https://example.com/a#cite-1",
+				"text": "-1",
+				"siteName": "示例站点"
+			},
+			{
+				"url": "https://example.com/b",
+				"title": "文章 B",
+				"siteName": "另一个站点"
+			}
+		]
+	}`)
+
+	items := extractMonitoringInlineCitationsFromRawResponse(raw, "deepseek")
+	if len(items) != 2 {
+		t.Fatalf("extractMonitoringInlineCitationsFromRawResponse() len = %d, want 2", len(items))
+	}
+	if items[0].URL != "https://example.com/a" {
+		t.Fatalf("extractMonitoringInlineCitationsFromRawResponse() first url = %q, want https://example.com/a", items[0].URL)
+	}
+	if items[0].SiteName == nil || *items[0].SiteName != "示例站点" {
+		t.Fatalf("extractMonitoringInlineCitationsFromRawResponse() first site = %v, want 示例站点", items[0].SiteName)
+	}
+	if items[1].Title == nil || *items[1].Title != "文章 B" {
+		t.Fatalf("extractMonitoringInlineCitationsFromRawResponse() second title = %v, want 文章 B", items[1].Title)
+	}
+}