test(ssr): Phase 7 parity gate — characterization spec for the Invoice Pay wizard

The Invoice Pay wizard is the first GENUINE multi-data-step wizard: choose-method
(collects bank-account + method) -> payment-details (collects check-number /
handwritten-date / amounts), merged only at submit. This gate characterizes that
flow before migrating it onto the session-backed engine, so the merge can be proven
behavior-preserving.

- Seed: make the TEST client's check bank account visible (+ name "Test Checking")
  so the choose-method step renders a usable method card. The pay flow had no e2e
  coverage, so the bank account was never visible in tests before.
- Spec drives the real 2-step flow against the unmodified wizard: choose-method
  renders the bank account + its methods (print-check/debit/handwrite-check, in the
  card tooltip); picking handwrite-check advances to payment-details (check-number +
  date + Pay); filling the check number and submitting shows the completion modal.
  The handwrite-check path is used because it transacts a pending check payment
  directly (no PDF/S3), making the success assertion stable.

Notes for the migration: the method controls live in a <template x-ref="tooltip">
revealed by the card button; the footer Pay submit is x-ref="next"; both the grid
filters and the modal carry a check-number input, so the modal selectors are scoped
to #wizard-form.

Verification: invoice-pay spec 3/3; full suite 58/58 (no regressions from the seed
change).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

test/clj/auto_ap/test_server.clj

@@ -69,7 +69,8 @@
                                 [(assoc (test-client :db/id "client-id"
                                                      :client/code "TEST"
                                                      :client/locations ["DT"])
-                                        :client/bank-accounts [(test-bank-account :db/id "bank-account-id" :bank-account/code "TEST-CHK")])
+                                        :client/bank-accounts [(test-bank-account :db/id "bank-account-id" :bank-account/code "TEST-CHK"
+                                                                                  :bank-account/visible true :bank-account/name "Test Checking")])
                                  (test-client :db/id "client-id-2"
                                               :client/code "TEST2"
                                               :client/locations ["NY"])