Five fixes this session: backend out of dev mode, PIL fallback for
iPhone Apple ProRAW Linear DNG, source root state classification so
prune-missing handles renamed folders, smaller initial page size +
idle polling backoff, and a partial index on photos that takes the
list query from 25ms seq-scan to 0.1ms index-only scan.
Also flags the deploy.sh --force-recreate gap that bit twice this
session and the outstanding data-drift (4,154 orphan rows + one
unregistered folder).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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