feat(platform): filter quality issues by type

vehicle-data-platform/apps/api/internal/platform/handler_test.go

@@ -647,6 +647,40 @@ func TestBuildQualityIssueWhereUsesMatchingArgs(t *testing.T) {
 	}
 }
 
+func TestBuildQualityIssueWhereFiltersIssueType(t *testing.T) {
+	fromSQL, args := buildQualityIssueWhere(url.Values{"issueType": {"NO_SOURCE"}})
+	if !strings.Contains(fromSQL, "q.issue_type = ?") {
+		t.Fatalf("quality issue SQL should filter issue type: %s", fromSQL)
+	}
+	if len(args) != 1 || args[0] != "NO_SOURCE" {
+		t.Fatalf("args = %#v", args)
+	}
+}
+
+func TestHandlerQualityIssuesFiltersIssueType(t *testing.T) {
+	handler := NewHandler(NewService(NewMockStore()))
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/api/quality/issues?issueType=NO_SOURCE&limit=20", nil)
+	handler.ServeHTTP(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", rec.Code, rec.Body.String())
+	}
+	var body struct {
+		Data Page[QualityIssueRow] `json:"data"`
+	}
+	if err := json.NewDecoder(rec.Body).Decode(&body); err != nil {
+		t.Fatalf("response JSON should decode: %v body=%s", err, rec.Body.String())
+	}
+	if body.Data.Total == 0 {
+		t.Fatalf("expected at least one NO_SOURCE issue")
+	}
+	for _, item := range body.Data.Items {
+		if item.IssueType != "NO_SOURCE" {
+			t.Fatalf("expected only NO_SOURCE issues, got %+v", body.Data.Items)
+		}
+	}
+}
+
 func TestHandlerOpsHealthIncludesVehicleServiceRuntime(t *testing.T) {
 	handler := NewHandler(NewServiceWithRuntime(NewMockStore(), RuntimeInfo{RequestTimeoutMs: 1500}))
 	rec := httptest.NewRecorder()

vehicle-data-platform/apps/api/internal/platform/mock_store.go

@@ -527,6 +527,9 @@ func (m *MockStore) QualityIssues(_ context.Context, query url.Values) (Page[Qua
 	if protocol := strings.TrimSpace(query.Get("protocol")); protocol != "" {
 		rows = keep(rows, func(row QualityIssueRow) bool { return row.Protocol == protocol })
 	}
+	if issueType := strings.TrimSpace(query.Get("issueType")); issueType != "" {
+		rows = keep(rows, func(row QualityIssueRow) bool { return row.IssueType == issueType })
+	}
 	return page(rows, query), nil
 }
 

vehicle-data-platform/apps/api/internal/platform/production_store.go

@@ -713,6 +713,10 @@ func buildQualityIssueWhere(query url.Values) (string, []any) {
 		where = append(where, "q.protocol = ?")
 		args = append(args, protocol)
 	}
+	if issueType := strings.TrimSpace(query.Get("issueType")); issueType != "" {
+		where = append(where, "q.issue_type = ?")
+		args = append(args, issueType)
+	}
 	if keyword := strings.TrimSpace(query.Get("keyword")); keyword != "" {
 		where = append(where, "(q.vin LIKE ? OR q.plate LIKE ? OR q.phone LIKE ? OR q.source_endpoint LIKE ?)")
 		like := "%" + keyword + "%"