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7b192e546f
Extend the builtin_models.yaml loader so the YAML file becomes a complete
source of truth for the rows it owns. Builds on the previous commit's
managed_by column.
Lifecycle contract:
- Every UPSERTed entry is tagged managed_by="yaml".
- The DoUpdates list now includes deleted_at, so an entry that was
soft-deleted (e.g. via UI/API) is automatically resurrected when it
reappears in the file. Closes the "ghost row that exists but is
invisible" failure mode.
- After all UPSERTs, the loader soft-deletes rows where
managed_by='yaml' AND id NOT IN (current YAML id set). Removing an
entry from YAML is now the supported way to retire a built-in model —
no manual SQL needed.
- Rows tagged managed_by='' (UI/API/SQL-seeded built-ins) are invisible
to the reconcile path and never touched.
- When a YAML entry sets is_default=true, the loader first clears
is_default on any other rows in the same (tenant_id, type) bucket,
mirroring the invariant enforced by the API path
(repository.UnsetDefaultModel).
Failure handling stays defensive:
- File missing / not a regular file / parse error: warn and skip; the
drift sweep is NOT executed so a malformed file cannot wipe rows.
- Per-entry UPSERT error: warn, drop the id from the keep-set so the
sweep also leaves the existing row alone ("leave alone on failure").
Tests cover: file-missing, parse-error, basic upsert + defaults,
idempotency, ${ENV} interpolation (set vs unset), drift sweep removing
YAML rows, drift sweep ignoring manual rows, soft-delete resurrection,
is_default cleanup across tenant+type, explicit empty list sweeping all
yaml-managed rows, and a regression guard ensuring BeforeCreate does not
overwrite YAML-supplied stable ids.
Docs are rewritten so operators see "delete from YAML and restart" as
the supported removal path; SQL is retained only for the legacy
managed_by='' slice.