Comments, docstrings and a few strings cited plan numbers ("plan 29
#9", "plan 86 §B2") from a git-ignored folder, so they pointed at
nothing; one reached users in a bottleneck hint. Code and frontend
strings are unchanged apart from those citations (checked by AST and
token comparison). A vhost still carrying the old asset comment reads
as undrifted, and a guard test keeps new citations out.
TimestampMixin (byte-identical to the hand-written pair — zero schema
migrations) adopted by 52 classes across 44 model files; the utcnow
tz-aware migration is now a one-file edit. uuid_pk() replaces the 13
pasted String(36) uuid4 lambdas across 7 files (ai.py's hex variant
stays grandfathered, documented). Deviant shapes (indexed created_at,
sanitization_profile's default-less updated_at, created-only models)
deliberately keep their own columns.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>