The credential tester (POST /api/services/test) used only body.secrets — the
values typed in the form. When editing an existing service the secret fields
are masked and intentionally left blank ("leave blank to keep current"), so the
test ran with empty credentials and failed auth even though the stored secret
was valid.
When body.id is set, look up the stored service, decrypt its secrets, and fall
back to the stored value for any known secret key that is absent or blank in
the input. The test still uses the freshly-typed config (so you can test an
edited URL) but authenticates with the effective credentials. New-service tests
(no id) are unchanged.
Test: editing a service and testing with empty secrets now authenticates with
the stored secret (asserts the stored key reaches the upstream request).
402/402 backend pass; ruff clean.
Developer
e757f4ba21