🌱 Upgrade swallowed console.warn to console.error for cache failures (#15941)

Fixes #15929

- Upgraded console.warn → console.error in main.tsx cache migration handler
- Upgraded console.warn → console.error in useNightlyE2EData.ts cache read
- Updated test spy to match new console.error usage

Signed-off-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: kubestellar-hive[bot]

web/src/hooks/__tests__/useNightlyE2EData-funcs.test.ts

@@ -77,13 +77,13 @@ describe('loadCachedData', () => {
 
   it('returns empty guides when localStorage has invalid JSON', () => {
     localStorage.setItem(LS_CACHE_KEY, '{not valid json')
-    const warnSpy = vi.spyOn(console, 'warn').mockImplementation(() => {})
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
     try {
       const result = loadCachedData()
       expect(result).toEqual({ guides: [], isDemo: false })
-      expect(warnSpy).toHaveBeenCalledOnce()
+      expect(errorSpy).toHaveBeenCalledOnce()
     } finally {
-      warnSpy.mockRestore()
+      errorSpy.mockRestore()
     }
   })
 

web/src/hooks/useNightlyE2EData.ts

@@ -41,7 +41,7 @@ function loadCachedData(): NightlyE2EData {
       const parsed = JSON.parse(raw) as NightlyE2EData
       if (parsed.guides?.length > 0 && !parsed.isDemo) return parsed
     }
-  } catch (e: unknown) { console.warn('[useNightlyE2EData] failed to read cached nightly data:', e) }
+  } catch (e: unknown) { console.error('[useNightlyE2EData] failed to read cached nightly data:', e) }
   return { guides: [], isDemo: false }
 }
 

web/src/main.tsx

@@ -166,7 +166,7 @@ enableMocking()
         initPreloadedMeta(meta)
       } catch (e: unknown) {
         logOpfsFallback('[Cache] SQLite worker init: using IndexedDB fallback:', e)
-        try { await migrateFromLocalStorage() } catch (migrateErr: unknown) { console.warn('[Cache] failed to migrate from localStorage:', migrateErr) }
+        try { await migrateFromLocalStorage() } catch (migrateErr: unknown) { console.error('[Cache] failed to migrate from localStorage:', migrateErr) }
       }
     })()