feat(18-01): add the cabana money field (task 1)

- type: money on fields.yaml with currency or currencyFrom, scale (2..4,
  default 4) and max; boot fails naming the field on two sources, none,
  a bad scale or max, a column that is not a string or a Scanner/Valuer,
  or a currencyFrom that is not a string column
- a save answers 422 money.invalid, money.too_precise or money.too_large
  on the field and fills the accepted decimal string unchanged; the same
  check runs on controller, settings and relation child saves
- backend::lang money.* phrases in en and pl
- admin SPA: money.ts (parseMoneyInput, trimMoneyDisplay, formatMoney over
  Intl with the string itself), MoneyField.vue with the currency suffix,
  blur validation and the read-only box, preview through the control,
  the field scope on PreviewView; regenerated OpenAPI and TS types,
  rebuilt modules/boardwalk/dist
- acme.payments fixture with TestMoneyFieldCompile and the Docker
  TestMoneyFieldSmoke; forms.md Money section and cabana README

admin/src/components/form/PreviewField.vue

@@ -8,8 +8,8 @@ import { isPluginField, rendererForField } from './registry'
 // One field of the preview screen (UI-SPEC S3, D-11): a label and its value
 // as a dt/dd pair. Values are text, never disabled inputs, so they keep full
 // contrast and are read in order. Controls that already have a read-only
-// mode (datepicker, fileupload, permissioneditor), partials and plugin field
-// types (their element gets `disabled`) are rendered through their own
+// mode (datepicker, fileupload, permissioneditor, money), partials and plugin
+// field types (their element gets `disabled`) are rendered through their own
 // component with the field marked read-only.
 const props = defineProps<{
   field: FormField
@@ -21,7 +21,7 @@ const props = defineProps<{
 }>()
 
 /** Types rendered by their own control in its read-only mode. */
-const ownControl = new Set(['datepicker', 'fileupload', 'partial', 'permissioneditor', 'richeditor', 'repeater'])
+const ownControl = new Set(['datepicker', 'fileupload', 'partial', 'permissioneditor', 'richeditor', 'repeater', 'money'])
 
 const controlId = computed(() => `${props.idPrefix ?? 'preview'}-${props.field.name}`)
 const labelId = computed(() => `${controlId.value}-label`)