feat: Track and display build failures during a11y repair

report-app/src/app/pages/report-viewer/report-viewer.html

@@ -273,6 +273,12 @@ <h2>Generated applications</h2>
                 @if (initialAttempt?.buildResult?.status === 'error') {
                   <span class="status-badge error">Initial build failed</span>
                 }
+
+                @if (hasBuildFailureDuringA11yRepair(result)) {
+                  <span class="status-badge error"
+                    >Build failed after a11y repair</span
+                  >
+                }
               </div>
             </div>
           </expansion-panel-header>

report-app/src/app/pages/report-viewer/report-viewer.ts

@@ -419,4 +419,8 @@ export class ReportViewer {
 
     return `wcs run --prompt=${result.promptDef.name} --env=<path to ${report.details.summary.environmentId} config>`;
   }
+
+  protected hasBuildFailureDuringA11yRepair(result: AssessmentResult): boolean {
+    return result.attemptDetails.some(attempt => attempt.buildFailedDuringA11yRepair);
+  }
 }

runner/orchestration/build-serve-loop.ts

@@ -170,15 +170,15 @@ export async function attemptBuild(
       progress,
     );
 
+    let hasBuildFailure = attempt.buildResult.status !== BuildResultStatus.SUCCESS;
+    attempt.buildFailedDuringA11yRepair = hasBuildFailure;
     attemptDetails.push(attempt);
     lastAttempt = attempt;
 
     // If we somehow introduced build errors via the Axe repair loop, we abort
     // further a11y repairs and capture the failed build. This is useful insight
     // as LLMs seem to regress when asked to repair a11y violations.
-    if (attempt.buildResult.status !== BuildResultStatus.SUCCESS) {
-      break;
-    }
+    if (hasBuildFailure) break;
 
     // Re-run serving & tests after Axe repair.
     // This allows us to check if we fixed the violations.

runner/shared-interfaces.ts

@@ -220,6 +220,9 @@ export interface AttemptDetails {
   /** LLM reasoning messages for generating these files. */
   // Note: May not be set in older reports.
   reasoning?: string;
+
+  /** Whether the build failed during an accessibility repair attempt. */
+  buildFailedDuringA11yRepair?: boolean;
 }
 
 /** Statistics related to the build process of the generated applications. */