kamaji 4491531acb Fix upload failures on iOS Safari (load failed) ...

iOS Safari kills fetch requests when the app goes to background or
the connection drops during large uploads, producing 'load failed'.
The sync engine was burning through all 5 retries instantly with no
delay, so a transient failure became permanent.

Changes:
- Add AbortController timeout (120s) on upload fetch
- Add exponential backoff between retries (2s, 5s, 10s...60s)
- Increase max retries from 5 to 15 for flaky mobile networks
- Remove 10MB resize step that was re-compressing photos already
  sized at capture time, avoiding extra memory pressure on iOS
- Log photo size with each upload attempt for easier debugging

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-07 15:31:54 -06:00

9.6 KiB

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