The previous commit stops list_task_credentials from building its schema
with obj(map[string]any{}, ""). Two gaps remained:
- obj still emitted whatever it was given, so the same typo on another tool
would again produce "required": [""]. obj now drops names that are blank
after strings.TrimSpace and omits the "required" key when nothing is left.
- Tool schemas are cached in the tools table and SeedTool is insert-only, so
the code fix only reached fresh installs. Existing databases kept the
malformed row and strict providers kept rejecting every worker run.
healListTaskCredentialsSchema runs at startup next to the other tool
seeds and removes the "required" key from that one row, only when it is
exactly [""]:
UPDATE tools SET schema = schema - 'required', updated_at=now()
WHERE key='list_task_credentials' AND schema->'required' = '[""]'::jsonb
It is idempotent (a healed row no longer matches), needs no settings flag,
and leaves the description, bindings, enabled flag and every other tool
untouched. tool_schema_refresh_v7 is not bumped.
Tests: TestObjDropsBlankRequired and
TestListTaskCredentialsSchemaHasNoBlankRequired (agent),
TestHealListTaskCredentialsSchema (server, Postgres).