feat(cloud): Folders/My Files/Peer Files polish + readable file rows

- Top-level Cloud tabs get their own orange-tinted switcher (clearly
  distinct from the category pills); full-width thirds on mobile
- 'All Files' tab renamed Folders; categories only show on the file-list
  tabs (My Files / Peer Files / search)
- My Files is now a flat list of every own file rendered with FileCard —
  real actions (share/download/delete) and clicking opens the FILE
  (media lightbox incl. audio, downloads for documents), never a folder;
  own search results get the same treatment
- Folder list rows get card backgrounds (readable over the wallpaper),
  same info as before

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/style.css

@@ -1715,26 +1715,28 @@ html.modal-scroll-locked .dashboard-scroll-panel {
 .cloud-file-list {
   display: flex;
   flex-direction: column;
-  gap: 0.125rem;
+  gap: 0.5rem;
   padding-bottom: 1rem;
 }
 
 .cloud-file-item {
   display: flex;
   gap: 0.75rem;
-  padding: 0.5rem;
+  padding: 0.625rem 0.75rem;
   border-radius: 0.75rem;
   transition: background-color 0.2s ease;
   text-align: left;
   width: 100%;
   cursor: pointer;
-  background: none;
-  border: none;
+  /* Readable card rows (like the Peer Files list) — bare text over the
+     wallpaper was unreadable. */
+  background: rgba(0, 0, 0, 0.45);
+  border: 1px solid rgba(255, 255, 255, 0.08);
   color: inherit;
   align-items: center;
 }
 .cloud-file-item:hover {
-  background: rgba(255, 255, 255, 0.05);
+  background: rgba(255, 255, 255, 0.08);
 }
 .cloud-file-item:active {
   background: rgba(255, 255, 255, 0.1);
@@ -2087,6 +2089,7 @@ html.modal-scroll-locked .dashboard-scroll-panel {
 
 .mobile-category-pill {
   flex: 0 0 auto;
+  white-space: nowrap;
   border: 1px solid rgba(255, 255, 255, 0.14);
   border-radius: 999px;
   background: rgba(255, 255, 255, 0.08);