refactor(ssr): render the bulk-code modal fully through Selmer

Move all markup in the Transaction Bulk Code modal out of Clojure and into
Selmer templates so bulk_code.clj only assembles data.

- Replace the inline sel/raw HTML strings and one Hiccup [:p] with templates:
  head, form-errors, footer, account-entries, success-body.
- Render the expense-account grid from a {% for %} template (account-grid.html
  + account-row.html) driven by a per-row view-model (account-row-vm); the row
  reuses the shared components/typeahead.html via a {% with %} include (no fork).
- Extract behaviour-preserving data-prep helpers reused by the view-model:
  sc/typeahead-ctx, sc/money-input-attrs, sc/validated-field-classes,
  sc/errors-str, edit/account-typeahead-ctx, edit/location-select-ctx.

Verified: REPL render parity + browser QA (add/remove row, typeahead select,
per-row location swap, percentage validation, submit, vendor auto-populate);
no JS errors.

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

resources/templates/transaction-bulk-code/account-row.html

@@ -0,0 +1,35 @@
+{# One expense-account row, read entirely from a loop-bound `row` view-model
+   (bulk-code/account-row-vm). The account typeahead reuses the shared
+   components/typeahead.html partial (its context mapped in from row.account via a with
+   block); the location select, percentage input, and remove button are inlined plain
+   HTML. The location cell (#account-location-N) swaps just itself on account change; the
+   remove button swaps the whole #bulk-code-form. Every dynamic attribute arrives
+   pre-serialized as a string. #}
+<tr class="{{ row.tr_classes }}"{{ row.tr_attrs|safe }}>
+  <input type="hidden" name="{{ row.db_id_name }}"{% if row.db_id_value %} value="{{ row.db_id_value }}"{% endif %}>
+  <td class="px-4 py-2">
+    <div class="{{ row.account_field_classes }}">
+      <div class="flex flex-col">{% with x_data=row.account.x_data x_model=row.account.x_model key=row.account.key disabled=row.account.disabled a_class=row.account.a_class a_xinit=row.account.a_xinit search_class=row.account.search_class placeholder=row.account.placeholder hidden_attrs=row.account.hidden_attrs %}{% include "templates/components/typeahead.html" %}{% endwith %}</div>
+      <p class="mt-2 text-xs text-red-600 dark:text-red-500 h-4">{{ row.account_error }}</p>
+    </div>
+  </td>
+  <td class="px-4 py-2" id="{{ row.location_cell_id }}">
+    <div class="{{ row.location_field_classes }}"{{ row.location_field_attrs|safe }}>
+      <select name="{{ row.location.name }}" class="{{ row.location.classes }}">
+        {% for opt in row.location.options %}<option value="{{ opt.value }}"{% if opt.selected %} selected{% endif %}>{{ opt.label }}</option>{% endfor %}
+      </select>
+      <p class="mt-2 text-xs text-red-600 dark:text-red-500 h-4">{{ row.location_error }}</p>
+    </div>
+  </td>
+  <td class="px-4 py-2">
+    <div class="{{ row.pct_field_classes }}">
+      <input {{ row.pct_attrs|safe }}>
+      <p class="mt-2 text-xs text-red-600 dark:text-red-500 h-4">{{ row.pct_error }}</p>
+    </div>
+  </td>
+  <td class="px-4 py-2 align-top">
+    <a class="account-remove-action p-3 inline-flex items-center justify-center bg-white dark:bg-gray-600 items-center text-sm font-medium border border-gray-300 dark:border-gray-700 text-center text-gray-500 hover:text-gray-800 rounded-lg dark:text-gray-400 dark:hover:text-gray-100"{{ row.remove_attrs|safe }}>
+      <div class="h-4 w-4">{% include "templates/components/svg-x.html" %}</div>
+    </a>
+  </td>
+</tr>