feat(quick-261022-k9k): admin save shortcuts and Create and new on record forms

- app/hotkeys.ts: dependency-free data-hotkey core (Ctrl/Cmd+S, Ctrl/Cmd+Enter,
  Ctrl/Cmd+Shift+S, Esc, / and ?), innermost-modal root, capture-phase modifier
  listener, platform labels and the help-dialog state
- Button hotkey prop (data-hotkey, aria-keyshortcuts); shortcuts installed by AppShell
- FormView: save keys and tooltips, Create and new on create forms via remountView
- phrasebook: form.create_and_new and the shortcuts group (en, pl)

admin/src/views/FormView.vue

@@ -6,6 +6,7 @@ import { api } from '../api/client'
 import { parentFileRoutes } from '../api/files'
 import type { AdminRecord, ErrorEnvelope, FormView, RecordEnvelope, RecordMeta, RelationOption } from '../api/types'
 import { controllerIdFromParams, controllerPath } from '../app/controllerRoutes'
+import { shortcutHint } from '../app/hotkeys'
 import { currentLocale, message, t } from '../app/i18n'
 import { loadControllerAssets } from '../app/pluginAssets'
 import { SESSION_HEADER, newSessionKey } from '../app/sessionKey'
@@ -58,12 +59,15 @@ import Button from '../components/ui/Button.vue'
 import ConfirmDialog from '../components/ui/ConfirmDialog.vue'
 import { useConfirm } from '../components/ui/confirm'
 import { clearRecordCrumb, setRecordCrumb } from '../state/useBreadcrumbs'
+import { remountView } from '../state/useRemount'
 import { showToast } from '../state/useToasts'
 
 // Schema-driven create/update form (D-05, D-09, D-10, D-18; design screen
 // 4). The view is keyed by route path, so one instance serves one record or
 // one create. Tabs group fields by `tab`; a sticky footer holds delete,
-// cancel, save-and-close and save; a dirty form confirms before leaving.
+// cancel, save-and-close and save (a create form also has create-and-new);
+// a dirty form confirms before leaving. The save buttons carry the keyboard
+// shortcuts (Ctrl/Cmd+S, Ctrl/Cmd+Enter, Ctrl/Cmd+Shift+S; app/hotkeys.ts).
 const route = useRoute()
 const router = useRouter()
 
@@ -527,6 +531,18 @@ async function onSaveAndClose(): Promise<void> {
   }
 }
 
+/**
+ * Utwórz i nowy (WinterCMS create_and_new): saves, then shows a blank create
+ * form of the same model in place, with a new session key; both redirects
+ * are ignored.
+ */
+async function onSaveAndNew(): Promise<void> {
+  const record = await save()
+  if (record) {
+    remountView()
+  }
+}
+
 async function onDelete(): Promise<void> {
   if (recordId === null || busy.value || !schema.value) {
     return
@@ -676,10 +692,35 @@ void load()
       </Button>
       <div class="ml-auto flex items-center gap-2.5">
         <Button variant="ghost" data-action="cancel" @click="onLeave">{{ t('backend::lang.form.cancel') }}</Button>
-        <Button variant="outline" data-action="save-close" :disabled="busy || loading || !schema || activeUploads > 0" @click="onSaveAndClose">
+        <Button
+          v-if="mode === 'create'"
+          variant="outline"
+          data-action="save-new"
+          hotkey="mod+shift+s"
+          :title="shortcutHint(t('backend::lang.form.create_and_new'), 'mod+shift+s')"
+          :disabled="busy || loading || !schema || activeUploads > 0"
+          @click="onSaveAndNew"
+        >
+          {{ t('backend::lang.form.create_and_new') }}
+        </Button>
+        <Button
+          variant="outline"
+          data-action="save-close"
+          hotkey="mod+enter"
+          :title="shortcutHint(t('backend::lang.form.save_and_close'), 'mod+enter')"
+          :disabled="busy || loading || !schema || activeUploads > 0"
+          @click="onSaveAndClose"
+        >
           {{ t('backend::lang.form.save_and_close') }}
         </Button>
-        <Button variant="primary" data-action="save" :disabled="busy || loading || !schema || activeUploads > 0" @click="onSave">
+        <Button
+          variant="primary"
+          data-action="save"
+          hotkey="mod+s"
+          :title="shortcutHint(t('backend::lang.form.save'), 'mod+s')"
+          :disabled="busy || loading || !schema || activeUploads > 0"
+          @click="onSave"
+        >
           {{ busy ? t('backend::lang.form.saving') : t('backend::lang.form.save') }}
         </Button>
       </div>