feat(neode-ui): mobile app-launch UX — store-driven panel, loader, ElectrumX icon

- Mobile launches use the store-driven panel (no route push) so the background
  tab no longer changes and closing returns to where you launched from.
- Tab-only apps open directly (in-app WebView on companion / new tab on PWA) —
  no "this app opens in a tab" interstitial.
- Shared AppLoadingScreen (app icon + progress bar) on the app session and the
  legacy iframe overlay instead of a black screen.
- Pin the dashboard to 100dvh on mobile so the mesh chat/tools panes stop sliding
  under the bottom tab bar in mobile browsers (no-op in the companion WebView).
- ElectrumX/electrs/electrs-ui ids now resolve to the real ElectrumX icon in My Apps.
- isMobile made reactive so overlay/footer/teleport decisions track the viewport.

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

neode-ui/src/views/__tests__/AppSessionMobileNewTab.test.ts

@@ -3,8 +3,8 @@ import { beforeEach, describe, expect, it, vi } from 'vitest'
 import AppSession from '../AppSession.vue'
 
 const { mockReplace, mockPush, mockWindowOpen, mockSuppress, mockResume } = vi.hoisted(() => ({
-  mockReplace: vi.fn(),
-  mockPush: vi.fn(),
+  mockReplace: vi.fn(() => Promise.resolve()),
+  mockPush: vi.fn(() => Promise.resolve()),
   mockWindowOpen: vi.fn(),
   mockSuppress: vi.fn(),
   mockResume: vi.fn(),
@@ -62,7 +62,7 @@ describe('AppSession mobile new-tab apps', () => {
     })
   })
 
-  it('keeps iframe-blocked apps inside the mobile session instead of auto-opening a tab', async () => {
+  it('opens tab-only apps directly on mobile instead of showing an interstitial', async () => {
     const wrapper = mount(AppSession, {
       global: {
         stubs: {
@@ -75,9 +75,11 @@ describe('AppSession mobile new-tab apps', () => {
     })
     await flushPromises()
 
-    expect(mockWindowOpen).not.toHaveBeenCalled()
-    expect(mockReplace).not.toHaveBeenCalled()
-    expect(wrapper.text()).toContain('This app opens in a new tab')
-    expect(wrapper.text()).toContain('Open in new tab')
+    // Tab-only app (gitea) on mobile-web: open directly in a new browser tab
+    // (no native bridge in the test) and dismiss the empty session — no
+    // "this app opens in a tab" interstitial.
+    expect(mockWindowOpen).toHaveBeenCalled()
+    expect(mockReplace).toHaveBeenCalled()
+    expect(wrapper.text()).not.toContain('This app opens in a new tab')
   })
 })