feat(ui): mobile mesh tabs, AIUI-style audio player, cloud grid + map fixes

UI (this session):
- Global audio player now scales the whole interface into the space above it
  on desktop (sidebar + main) and docks directly above the tab bar on mobile;
  it stays visible while navigating.
- Mesh mobile redesign: floating Chat / BTC / Dead Man / AI / Map tab strip
  with a single fixed, internally-scrolling pane (page no longer scrolls);
  tabs hide while a conversation is open; floating back button; collapsible
  Device panel (starts collapsed); keyboard-aware conversation sizing via
  VisualViewport so the chat sits just above the keyboard.
- Cloud file grid: uniform 4/3 card heights (folders + images match).
- Swipe left/right switches tabs on the Apps and Web5 screens.
- Map tool fills its pane (no bottom gap); fix skewed Share Location toggle
  on mobile (global min-height rule was deforming the switch).
- Trim redundant helper copy from the mesh AI tab.

Also bundles pre-existing in-progress work that was already in the tree:
mesh listener/session + wallet + container + bitcoin-status backend changes,
docker UI updates, and assorted other UI tweaks.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

neode-ui/src/components/MeshMap.vue

@@ -471,6 +471,9 @@ onUnmounted(() => {
 .mesh-map-toggle {
   width: 36px;
   height: 20px;
+  /* The global mobile rule forces buttons to min-height:44px, which stretches
+     this switch and pushes the knob off-centre. Pin it back to the pill size. */
+  min-height: 20px !important;
   border-radius: 10px;
   border: 1px solid rgba(255, 255, 255, 0.15);
   background: rgba(255, 255, 255, 0.1);