Lazy-load Wearables stylesheet

[elkimek]

Summary

• defer css/wearables.css until biometric detail, inline manual logging, or Wearables settings is opened
• preserve the original cascade position, offline precache, single-flight loading, and cache-busted retry
• keep the dashboard manual biometric shell styled from the eager dashboard bundle
• ratchet the cold-load budget from 435 to 434 requests

Cold-load result

• requests: 435 → 434
• compressed transfer: 1,836,218 → 1,829,165 bytes (-7,053)
• decoded bytes: 5,539,354 → 5,507,886 (-31,468)

Verification

• env PORT=8015 COVERAGE=1 ./run-tests.sh
  • 131 verification checks
  • 487 Vitest tests
  • 417 Chromium tests
  • 472 responsive assertions
  • offline PWA and two-device sync
  • 67.21% global function coverage
• npm run quality (11/11)
• npm run performance:check