- Bumped service worker cache version to v2 to force cache invalidation
- Added activate event to explicitly clear old caches
- Enhanced service worker logging with update checking
- Changed API fallback URL from localhost:3001 to https://puffinoffset.com/api
This fixes the issue where new code deployments were not being used due to
service worker caching the old JavaScript with the timing bug.
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Co-Authored-By: Claude <noreply@anthropic.com>