chore: Enhance CI workflow with comprehensive checks for linting, type checking, and testing

This commit updates the CI workflow to include additional checks for ESLint, type checking, and backend tests. It introduces steps to validate the outcomes of these checks, ensuring that any failures will cause the job to fail. This enhancement improves the overall quality control in the CI pipeline, requiring developers to address issues before proceeding with the build process.

viewer-frontend/app/api/search/route.ts

@@ -32,7 +32,7 @@ export async function GET(request: NextRequest) {
             where: { userId },
             select: { photoId: true },
           });
-          favoritePhotoIds = favorites.map(f => f.photoId);
+          favoritePhotoIds = favorites.map((f: { photoId: number }) => f.photoId);
           
           // If user has no favorites, return empty result
           if (favoritePhotoIds.length === 0) {

viewer-frontend/app/api/users/[id]/route.ts

@@ -279,7 +279,7 @@ export async function DELETE(
       prismaAuth.photoFavorite.count({ where: { userId } }),
     ]);
 
-    const finalHasRelatedRecords = finalCheck.some(count => count > 0);
+    const finalHasRelatedRecords = finalCheck.some((count: number) => count > 0);
     
     if (finalHasRelatedRecords) {
       console.log(`[DELETE User ${userId}] Final check found related records, deactivating instead`);