Root cause was WORKER TIMEOUT, not OOM:
- Gunicorn sends SIGABRT to workers that exceed 60s timeout
- SIGABRT handler calls sys.exit(1) raising SystemExit(BaseException)
- except Exception does NOT catch SystemExit, so the worker crashes
Two fixes:
1. except BaseException — catches SystemExit so the worker survives
and gracefully skips the image (returns None) instead of dying
2. Image.BILINEAR instead of LANCZOS — orders of magnitude faster
for large images, ensures processing completes well within 60s
3. Reduce max_width 1600->800, megapixel limit 20->8 MP, optimize=True removed
(these reduce processing time further)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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