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

Migrate every part of the Transaction Edit modal's HTML to Selmer templates
(zero Hiccup in the render path) and delete the mm multi-modal "wizard"
abstraction entirely -- there was only ever one step.

- New auto-ap.ssr.components.selmer (sc) + ~22 shared component partials under
  resources/templates/components/ (typeahead, button-group, radio-card,
  data-grid, validated-field, modal, buttons, inputs, SVGs). Each wrapper renders
  its own partial; dynamic HTMX/Alpine attrs bridge via attrs->str -> {{attrs|safe}}.
- 15 modal templates under resources/templates/transaction-edit/.
- Delete EditWizard/LinksStep records + all mm/* usage. Plain handlers: flat
  wrap-decode-edit (fields renamed off step-params[...], stray keys stripped),
  flat wrap-derive-state, *errors*-based field errors, generic wrap-form-4xx-2.
- Drop the edit-wizard-navigate route (routes ~12 -> 5).
- Fix: stray `method` (tab button-group hidden) leaked into the upsert -> 500;
  strip decoded map to schema keys.
- e2e selectors updated (#wizard-form->#edit-form, #wizardmodal->#editmodal,
  step-params[...] field names). Parity: swap 6/6, edit 8/8, suite 38/1
  (1 pre-existing unrelated nav test).
- ssr-form-migration skill updated with the learnings (composition mechanics,
  sc/* library, drop-the-wizard recipe, scorecard row, 3 new gotchas).

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

.claude/skills/ssr-form-migration/reference/component-cookbook.md

@@ -149,3 +149,34 @@ divergence). Scorecard heuristic 1: faked roots → 0.
 ```
 TODO Phase 2: the simple/advanced toggle becomes a `?mode=` re-render (plain form), not a
 dedicated route.
+
+---
+
+## The Selmer component library (`auto-ap.ssr.components.selmer` / `sc`) — Phase 2-final
+
+Every shared component the modal renders through is now a thin Clojure wrapper over a
+partial under `resources/templates/components/`. **Reuse these before reaching for the
+Hiccup `com/*` versions in a migrated modal.** Each wrapper builds a context (reusing the
+real class helpers so output matches modulo Tailwind order) and renders its own partial via
+the interop bridge; dynamic HTMX/Alpine attrs go through `sc/attrs->str` →
+`{{ attrs|safe }}`. See `selmer-conventions.md` for the mechanics.
+
+| Wrapper | Partial | Notes |
+|---------|---------|-------|
+| `sc/hidden` / `sc/text-input` / `sc/money-input` | `hidden`/`text-input`/`money-input`.html | leaf inputs; class via `inputs/default-input-classes` + `use-size` |
+| `sc/validated-field` | `validated-field.html` | label + body + always-present error `<p>`; pass-through attrs land on the wrapping div (the per-row location cell hangs its swap wiring here) |
+| `sc/button` / `sc/a-button` / `sc/a-icon-button` | `button`/`a-button`/`a-icon-button`.html | spinner via `{% include "spinner.html" %}`; class via `btn/bg-colors` |
+| `sc/badge` / `sc/link` | `badge`/`link`.html | |
+| `sc/button-group` / `sc/button-group-button` | `button-group(+button).html` | the group does **not** mutate children's classes (the Hiccup `group-` added rounded-l/r) — add rounding in the caller/template (tabs do) |
+| `sc/radio-card` | `radio-card.html` | reproduces the `select-keys [:hx-post :hx-target :hx-swap :hx-include :hx-trigger]` filter (drops `:hx-vals`/`:hx-select`) **and** the dangling-`[:h3]` quirk: only the `<ul>` renders |
+| `sc/data-grid` (+ `-header`/`-row`/`-cell`) | `data-grid*.html` | table shell + optional `footer-tbody` (the swappable totals tbody) |
+| `sc/typeahead` | `typeahead.html` | full Alpine + tippy; resolves `{value,label}` server-side via `content-fn`; every `tippy?.` null-guard preserved; hidden posting `<input>` with `:value="value.value"` + the `x-init` watcher |
+| `sc/modal` | `modal.html` | the `@click.outside="open=false"` wrapper |
+| SVGs | `spinner`/`svg-x`/`svg-external-link`/`svg-drop-down`.html | static, `{% include %}`d so the markup isn't duplicated |
+
+Modal-specific structure lives under `resources/templates/transaction-edit/`
+(`edit-form`, `edit-modal`, `links-body`, `manual-coding`, `simple-mode`, `account-totals`,
+`details-panel`, the four match panels, `transitioner`). The render fns in `edit.clj`
+gather data, call `sc/*`, and interpolate the fragments into these layout templates as
+`{{ frag|safe }}`. **Verify each wrapper by class-set equality + e2e, never byte-parity**
+(`hh/add-class` is set-based, so class order differs from the Hiccup output).