- Import sql from drizzle-orm in admin.ts
- Add onDuplicateKeyUpdate({ set: { value: sql\`value\` } }) to the
conditional INSERT in POST /config/timezone/seed so a concurrent seed
(or seed racing a PUT) cannot 500 on the app_config.key PK constraint
- Existing value is preserved per D-03 no-overwrite (no-op ODKU)
- seeded flag still reflects the pre-flight SELECT (winner: true, loser: false)
- Add tests: 403 access control, seeded:true on first seed, seeded:false
on second seed without throw (WR-02 idempotent race)
Lucas Berger
bda31a33bd