Account coding lived in the always-applied base map of edit-form-schema, so
every action (including the link/apply-rule/unlink actions) required a valid
transaction-account/account. The edit modal always submits the Manual tab's
(usually blank) account row, so link submits failed validation before reaching
their save-handler and silently no-op'd. Move account validation into the
:manual branch of the action :multi so link actions validate without it.
Also surface whole-form validation errors in the wizard footer error bar:
default-step-footer only handled top-level/sequential error shapes, so nested
field-error maps (e.g. a hidden tab's account error) produced an empty bar and
a silent failure. Add flatten-form-errors to flatten the humanized error tree.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Bryce
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