feat(SPA): media field type

web/src/lib/entryMessages.ts

@@ -24,6 +24,8 @@ function requiredMessage(field: BuiltinField) {
 			return t('Choose an option for {0}.', [field.label])
 		case 'boolean':
 			return t('Choose yes or no for {0}.', [field.label])
+		case 'media':
+			return t('Pick an image for {0}.', [field.label])
 		default:
 			return t('Fill in {0}.', [field.label])
 	}
@@ -39,6 +41,8 @@ function typeMessage(field: BuiltinField) {
 			return t('{0} must be a date, like 2026-11-21.', [field.label])
 		case 'select':
 			return t('{0} must be one of the choices.', [field.label])
+		case 'media':
+			return t('{0} must be an image from the library.', [field.label])
 		default:
 			return t('{0} must be text.', [field.label])
 	}
@@ -134,6 +138,13 @@ export function rangeHelp(field: BuiltinField) {
 	return typeof max === 'number' ? t('At most {0}.', [String(max)]) : ''
 }
 
+export function mediaChangedLine(label: string) {
+	return t(
+		"The {0} field was changed after you opened this form. Reload the form to continue. What you typed here can't be saved against the old fields.",
+		[label],
+	)
+}
+
 export function schemaChangedLine(key: string) {
 	const name = key.replace(/_/g, ' ')
 	return t(