refactor(ssr): full Selmer migration of Transaction Edit; remove the wizard

Squashed Phase-2 SSR work: migrate the Transaction Edit modal's render path
entirely to Selmer templates (zero Hiccup in the render path), rip out the
multi-step wizard abstraction (EditWizard/LinksStep records, MultiStepFormState,
step-params[...] field names, mm/* middleware) in favor of a plain form with
flat derived state, and promote shared UI components to reusable Selmer partials
under resources/templates/components/. Adds the Selmer interop bridge, the
auto-ap.ssr.components.selmer (sc) wrapper library, and the ssr-form-migration
skill capturing the learnings.

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

resources/templates/transaction-edit/linked-payment.html

@@ -0,0 +1 @@
+<div class="my-4 p-4 bg-blue-50 rounded"><h3 class="text-lg font-bold mb-2">Linked Payment{{ external_link|safe }}</h3><div class="space-y-2"><div class="flex justify-between"><div class="font-medium">Payment #</div><div>{{ number }}</div></div><div class="flex justify-between"><div class="font-medium">Vendor</div><div>{{ vendor }}</div></div><div class="flex justify-between"><div class="font-medium">Amount</div><div>{{ amount }}</div></div><div class="flex justify-between"><div class="font-medium">Status</div><div>{{ status }}</div></div><div class="flex justify-between"><div class="font-medium">Date</div><div>{{ date }}</div></div>{{ payment_id_hidden|safe }}<div class="mt-4"{{ unlink_attrs|safe }}>{{ unlink_button|safe }}</div></div></div>