feat(import): enrich baidu and bytedance release metadata

scripts/import_bytedance_data_test.go

@@ -0,0 +1,66 @@
+//go:build llm_script
+
+package main
+
+import "testing"
+
+func TestEnrichBytedanceModelMetadataUsesSpecificFamilyRules(t *testing.T) {
+	cases := []struct {
+		modelID         string
+		wantReleaseDate string
+		wantSourceURL   string
+	}{
+		{
+			modelID:         "bytedance-doubao-seed-1.6-thinking",
+			wantReleaseDate: "2025-06-11",
+			wantSourceURL:   "https://developer.volcengine.com/articles/7517188354606104612",
+		},
+		{
+			modelID:         "bytedance-doubao-1.5-thinking-pro",
+			wantReleaseDate: "2025-04-17",
+			wantSourceURL:   "https://developer.volcengine.com/articles/7496718897794039827",
+		},
+		{
+			modelID:         "bytedance-seedance-1.0-lite",
+			wantReleaseDate: "2025-05-13",
+			wantSourceURL:   "https://developer.volcengine.com/articles/7504284064976502823",
+		},
+	}
+
+	for _, tc := range cases {
+		enriched := enrichBytedanceModelMetadata(ModelPricing{
+			ModelID:   tc.modelID,
+			SourceURL: "https://www.volcengine.com/docs/82379/1099320",
+		})
+
+		if enriched.ReleaseDate != tc.wantReleaseDate {
+			t.Fatalf("%s release date = %q, want %q", tc.modelID, enriched.ReleaseDate, tc.wantReleaseDate)
+		}
+		if enriched.ModelSourceURL != tc.wantSourceURL {
+			t.Fatalf("%s source url = %q, want %q", tc.modelID, enriched.ModelSourceURL, tc.wantSourceURL)
+		}
+	}
+}
+
+func TestEnrichBytedanceModelMetadataFallsBackToPricingSource(t *testing.T) {
+	enriched := enrichBytedanceModelMetadata(ModelPricing{
+		ModelID:   "bytedance-deepseek-r1",
+		SourceURL: "https://www.volcengine.com/docs/82379/1099320",
+	})
+
+	if enriched.ReleaseDate != "" {
+		t.Fatalf("unexpected release date: %q", enriched.ReleaseDate)
+	}
+	if enriched.ModelSourceURL != "https://www.volcengine.com/docs/82379/1099320" {
+		t.Fatalf("model source url = %q, want pricing source fallback", enriched.ModelSourceURL)
+	}
+}
+
+func TestBytedanceReleaseDateValueReturnsNilForUnknownDate(t *testing.T) {
+	if value := releaseDateValue(""); value != nil {
+		t.Fatalf("blank release date should stay nil, got %v", value)
+	}
+	if value := releaseDateValue("invalid"); value != nil {
+		t.Fatalf("invalid release date should stay nil, got %v", value)
+	}
+}