DATA-02 item-attempt writer wiring validation

branch: dev/next-development
baseline: 3c1e481a14194402b7c2f60c788898d17f4809c9
production actions: none

pytest focused: 44 passed, 2 skipped in 319.16s
pytest publication evidence component recheck: 1 passed in 372.72s
incremental mypy: 0 regressions in 8 production files
full mypy debt ceiling: 0 errors in 0 files
migration drift: No changes detected in app data_center
Django system check: 0 issues
Ruff: 12 files passed
Black: 11 files passed
isort: 11 files passed
architecture: 3215 files, 0 boundary violations
current-data contracts: 63 surfaces passed
Celery contracts: 92 tasks, 21 exemptions, 23 governed files passed
governance: registry 2026-09-21.v148, 0 violations
migration graph verifier: not run because DATABASE_URL is not set

PostgreSQL-only skips and 5,533-asset scale remain explicit production gates.
