feat(daily-prep): add live prep-output mode to the Details island

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/ClaudeDo.Localization/locales/de.json

@@ -138,7 +138,8 @@
     "toggleEditPreviewTip": "Bearbeiten/Vorschau umschalten",
     "previewBtn": "Vorschau",
     "editBtn": "Bearbeiten",
-    "descriptionPlaceholder": "Aufgabendetails hinzufügen (Markdown unterstützt)..."
+    "descriptionPlaceholder": "Aufgabendetails hinzufügen (Markdown unterstützt)...",
+    "prepTitle": "Tagesvorbereitung"
   },
   "agent": {
     "stopTip": "Agent stoppen",

src/ClaudeDo.Localization/locales/en.json

@@ -138,7 +138,8 @@
     "toggleEditPreviewTip": "Toggle edit/preview",
     "previewBtn": "Preview",
     "editBtn": "Edit",
-    "descriptionPlaceholder": "Add task details (markdown supported)..."
+    "descriptionPlaceholder": "Add task details (markdown supported)...",
+    "prepTitle": "Daily prep"
   },
   "agent": {
     "stopTip": "Stop agent",