A concurrent commit changed DB_PASSWORD_FILE/ENCRYPTION_KEY_FILE's
defaults from "" (opt-in) to fixed /run/secrets/... paths, so production
containers pick them up with zero extra config. But model_post_init reads
these unconditionally at Settings() construction for every process that
imports app.config — including local dev and the test suite, which don't
have that file — so it started crashing the entire test suite with
FileNotFoundError. A missing file now falls back to leaving DATABASE_URL/
ENCRYPTION_KEY untouched instead of crashing; an actual I/O error reading
an existing file still propagates. Added a regression test for exactly
this scenario. 171 backend tests passing.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Le
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