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>

core/archipelago/src/container/docker_packages.rs

@@ -365,6 +365,13 @@ fn get_app_metadata(app_id: &str) -> AppMetadata {
             repo: "https://github.com/fedimint/fedimint".to_string(),
             tier: "",
         },
+        "fedimint-clientd" | "fmcd" => AppMetadata {
+            title: "Fedimint Client".to_string(),
+            description: "Fedimint ecash client daemon (fmcd) — lets your node hold Fedimint ecash and join federations".to_string(),
+            icon: "/assets/img/app-icons/fedimint.png".to_string(),
+            repo: "https://github.com/minmoto/fmcd".to_string(),
+            tier: "",
+        },
         "morphos" | "morphos-server" => AppMetadata {
             title: "Morphos".to_string(),
             description: "Self-hosted file converter".to_string(),