fix media supply citation attribution

server/internal/tenant/app/monitoring_callback_service_test.go

@@ -583,6 +583,38 @@ func TestBuildMonitoringCitationFactResolvesContentForQwen(t *testing.T) {
 	}
 }
 
+func TestBuildMonitoringCitationFactResolvesMediaSupplyContentSource(t *testing.T) {
+	aliasArticleID := int64(42)
+	sourceID := int64(9001)
+	normalizedURL := "https://example.com/submitted/article"
+	input := MonitoringSourceItem{
+		URL:           "https://example.com/submitted/article?utm_source=chat",
+		NormalizedURL: &normalizedURL,
+	}
+	aliasMap := map[string]monitoringAliasResolution{
+		normalizedURL: {
+			ArticleID:        &aliasArticleID,
+			NormalizedURLKey: normalizedURL,
+			SourceType:       monitoringContentSourceMediaSupplyOrderItem,
+			SourceID:         &sourceID,
+		},
+	}
+
+	fact, ok := buildMonitoringCitationFact(input, aliasMap, true)
+	if !ok {
+		t.Fatal("buildMonitoringCitationFact() returned !ok")
+	}
+	if fact.ArticleID == nil || *fact.ArticleID != aliasArticleID {
+		t.Fatalf("ArticleID = %v, want %d", fact.ArticleID, aliasArticleID)
+	}
+	if fact.ContentSourceType == nil || *fact.ContentSourceType != monitoringContentSourceMediaSupplyOrderItem {
+		t.Fatalf("ContentSourceType = %v, want %q", fact.ContentSourceType, monitoringContentSourceMediaSupplyOrderItem)
+	}
+	if fact.ContentSourceID == nil || *fact.ContentSourceID != sourceID {
+		t.Fatalf("ContentSourceID = %v, want %d", fact.ContentSourceID, sourceID)
+	}
+}
+
 func TestScoreMonitoringAliasCandidateUsesCanonicalArticleKey(t *testing.T) {
 	input := monitoringAliasLookupInput{
 		NormalizedURL: "https://m.163.com/dy/article/KRPRE8DJ0556MCR0.html",
@@ -613,6 +645,70 @@ func TestScoreMonitoringAliasCandidateRejectsSameDomainDifferentArticle(t *testi
 	}
 }
 
+func TestMonitoringPublishedAliasIndexMatchesMediaSupplySubmission(t *testing.T) {
+	index := make(monitoringPublishedAliasIndex)
+	sourceID := int64(9001)
+	mediaAlias := monitoringPublishedAlias{
+		ArticleID:       42,
+		ArticleTitle:    "投稿文章",
+		PublishPlatform: monitoringMediaSupplySubmissionCitationLabel,
+		OriginalURL:     "https://m.example.com/submitted/article?id=123&utm_source=chat",
+		NormalizedURL:   "https://www.example.com/submitted/article?id=123",
+		SourceType:      monitoringContentSourceMediaSupplyOrderItem,
+		SourceID:        sourceID,
+		SourcePriority:  1,
+	}
+
+	addMonitoringPublishedAliasToIndex(index, mediaAlias)
+
+	match, ok := index.Match(
+		"https://www.example.com/submitted/article?id=123&utm_medium=ai",
+		"https://www.example.com/submitted/article?id=123",
+	)
+	if !ok {
+		t.Fatal("Match() = false, want media supply alias match")
+	}
+	if match.SourceType != monitoringContentSourceMediaSupplyOrderItem {
+		t.Fatalf("SourceType = %q, want %q", match.SourceType, monitoringContentSourceMediaSupplyOrderItem)
+	}
+	if match.SourceID != sourceID {
+		t.Fatalf("SourceID = %d, want %d", match.SourceID, sourceID)
+	}
+}
+
+func TestMonitoringPublishedAliasIndexPrefersMediaSupplySubmission(t *testing.T) {
+	index := make(monitoringPublishedAliasIndex)
+	normalizedURL := "https://www.example.com/submitted/article?id=123"
+
+	addMonitoringPublishedAliasToIndex(index, monitoringPublishedAlias{
+		ArticleID:      42,
+		OriginalURL:    normalizedURL,
+		NormalizedURL:  normalizedURL,
+		SourceType:     monitoringContentSourcePublishedArticle,
+		SourceID:       42,
+		SourcePriority: 2,
+	})
+	addMonitoringPublishedAliasToIndex(index, monitoringPublishedAlias{
+		ArticleID:      42,
+		OriginalURL:    normalizedURL,
+		NormalizedURL:  normalizedURL,
+		SourceType:     monitoringContentSourceMediaSupplyOrderItem,
+		SourceID:       9001,
+		SourcePriority: 1,
+	})
+
+	match, ok := index.Match(normalizedURL, normalizedURL)
+	if !ok {
+		t.Fatal("Match() = false, want media supply alias match")
+	}
+	if match.SourceType != monitoringContentSourceMediaSupplyOrderItem {
+		t.Fatalf("SourceType = %q, want %q", match.SourceType, monitoringContentSourceMediaSupplyOrderItem)
+	}
+	if match.SourceID != 9001 {
+		t.Fatalf("SourceID = %d, want 9001", match.SourceID)
+	}
+}
+
 func TestBuildMonitoringRawPayloadDeepSeekIncludesSearchResultsInCitationInputs(t *testing.T) {
 	searchTitle := "搜索网页结果"