style: polish UI and improve UX

messages/en/assetHub.json

@@ -22,6 +22,7 @@
     "downloadSuccess": "Download Complete",
     "downloadFailed": "Download Failed",
     "downloadEmpty": "No image assets to download",
+    "filteredEmptyHint": "Click \"New Asset\" to add assets",
     "newFolder": "New Folder",
     "editFolder": "Edit Folder",
     "deleteFolder": "Delete Folder",

messages/en/home.json

@@ -1,5 +1,5 @@
 {
-  "title": "Quick Start",
+  "title": "From Inspiration to Screen",
   "subtitle": "Describe your story and let AI generate cinematic short dramas",
   "inputPlaceholder": "Enter your story idea, novel excerpt, or script outline...",
   "startCreation": "Start Creating",

messages/en/novel-promotion.json

@@ -173,4 +173,4 @@
     "confirm": "Continue and Clear",
     "cancel": "Cancel"
   }
-}
+}