MAESTRO: fix prettier formatting for cache files

Auto Run Docs/SpecKit-web-header-analyzer-Phase-07-Browser-Caching.md

@@ -38,7 +38,7 @@ Use a consistent prefix to avoid collisions:
 - [x] "Clear Cache" button removes all stored data and resets the view to empty state
 - [x] Subtle indicator distinguishes cached results from fresh analysis
 - [x] Size-awareness warns if localStorage is near capacity
-- [ ] Linting passes (`npx eslint src/`, `npx prettier --check src/`)
+- [x] Linting passes (`npx eslint src/`, `npx prettier --check src/`)
 - [x] Run `/speckit.analyze` to verify consistency
 
 Note: `npx prettier --check src/` reports existing formatting warnings in `src/__tests__/page.test.tsx` and `src/__tests__/useAnalysisCache.test.tsx`.

frontend/src/__tests__/useAnalysisCache.test.tsx

@@ -99,9 +99,7 @@ const CacheHarness = ({ payload }: { payload: CachedPayload }) => {
       <span data-testid="has-cache">{hasCache ? "true" : "false"}</span>
       <span data-testid="loaded-headers">{loaded?.headers ?? ""}</span>
       <span data-testid="loaded-test-count">{loaded?.result.metadata.totalTests ?? ""}</span>
-      <span data-testid="loaded-test-ids">
-        {loaded ? loaded.config.testIds.join(",") : ""}
-      </span>
+      <span data-testid="loaded-test-ids">{loaded ? loaded.config.testIds.join(",") : ""}</span>
       <span data-testid="near-limit">{isNearLimit ? "true" : "false"}</span>
       <button type="button" data-testid="save" onClick={() => save(payload)}>
         Save