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/api/rpc/mesh/assistant.rs

@@ -14,12 +14,12 @@ impl RpcHandler {
     pub(in crate::api::rpc) async fn handle_mesh_assistant_status(
         &self,
     ) -> Result<serde_json::Value> {
-        let cfg = {
+        let (cfg, denied_askers) = {
             let service = self.mesh_service.read().await;
             let svc = service
                 .as_ref()
                 .ok_or_else(|| anyhow::anyhow!("Mesh service not running"))?;
-            svc.assistant_config().await
+            (svc.assistant_config().await, svc.assistant_denied_askers().await)
         };
 
         let (ollama_detected, models) = detect_ollama().await;
@@ -37,6 +37,7 @@ impl RpcHandler {
             "ollama_detected": ollama_detected,
             "claude_available": claude_available,
             "models": models,
+            "denied_askers": denied_askers,
         }))
     }