gtiandClaude Opus 5.5
6bcfac6497
Audit of models vs fresh DB vs production (all at 0019): 20 columns are NOT NULL in the models but nullable in the database, all timestamps with DEFAULT now() created by 0011/0012/0014/0017 without nullable=False. Classified DB_CONSTRAINT_MISSING: no application path writes NULL to them (inserts omit them, updates set now; no raw SQL inserts), and there were zero NULLs in production and in the development database (246,682 rows checked). The upgrade aborts without changing anything if any NULL is present, instead of inventing a value. After this revision a fresh database matches the models on nullability, column types, PKs, FKs, uniqueness and checks. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>