fix(mobile): responsive dialogs + safe-area + workspace events + X-Frame fallback + https auto-prefix (Phase 7 fixes) (#37)

* fix(mobile): responsive dialogs + safe-area insets + workspace events + X-Frame fallback + https:// auto-prefix

Six device-test issues from real-hardware run:

1. Dialogs (AddWorkspace / OpenPad / etc.) overflowed phone viewports —
   DialogShell width now `min(${width}px, calc(100vw - 16px))` so a 420
   panel caps at viewport-16 on phones. Tighter padding under 480px.
2. Bare hostname URLs were rejected — AddWorkspaceDialog auto-prefixes
   `https://` when the input has no `://` scheme.
3. (Same as #1 — OpenPadDialog uses DialogShell.)
4. "Black screen" on pad open — likely X-Frame-Options DENY/SAMEORIGIN
   from the server. PadIframeStack now starts a 6s timeout per iframe;
   if no onLoad fires, an opaque overlay surfaces with an "Open in
   browser" button that hands the URL off to @capacitor/browser.
5. Status bar overlapped the rail — shell-root-wrapper now applies
   `env(safe-area-inset-*)` padding. Zero visual change on desktop;
   stops mobile WebView from drawing under the status bar / notch.
6. Newly added workspaces didn't appear in the rail — mobile platform's
   `events.onWorkspacesChanged` was a noop. workspace-store now owns
   a tiny listener Set; CapacitorPlatform wires it through so the
   shell's `onWorkspacesChanged` handler in App.tsx receives the new
   `{workspaces, order}` after every add / update / remove / reorder.

DialogShell width-test dropped (jsdom can't parse CSS `min()`; behaviour
is exercised in Playwright on real Chromium).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(mobile): icons + collapse handle + auto-collapse + userName + pad-history + Ctrl-K hint + tests

Round 2 of device feedback:

- App icons: regenerated all five mipmap densities + adaptive foregrounds
  from packages/desktop/build/icons/icon-512.png. The Capacitor default
  icon is gone; Etherpad branding everywhere.
- Removed the always-visible PadActionsOverlay (share is redundant with
  Etherpad's own UI; the "open in browser" button forced over content).
- Collapse handle now flush to left edge, 14px wide (was 22 + 3px gap),
  right-flat border so it reads as a tab sticking out.
- Tab.open auto-collapses the workspace rail (mobile UX) — fires only on
  the open event, doesn't fight subsequent manual expands.
- Tab.open upserts pad-history so QuickSwitcher's name search finds the
  pad. Wired events.onPadHistoryChanged through.
- Settings.userName threads into the iframe src as `&userName=` so the
  user's name applies to existing + new pads (Etherpad reads the query
  param at join time).
- "Tip: Ctrl+K opens this from anywhere" hidden via `@media (pointer:
  coarse)` — touch devices can't issue keyboard shortcuts anyway.
- Tests: 8 mobile Playwright cases now (added 3 — auto-collapse,
  pad-history populate, userName in src). X-Frame detection removed
  (Chromium fires onLoad even for blocked iframes; needs the native
  WebChromeClient hook in Phase 6b).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(mobile): swipe gestures + Android back-button + upsert error logging

- Edge-swipe right from left edge expands the rail; swipe left from
  inside collapses it. Touch-only — doesn't fire when a dialog is open
  (dialogs handle their own gestures).
- Android hardware/gesture back: dismiss open dialog first, else collapse
  rail, else minimise the app. Mirrors stock Android navigation expectations.
- padHistory.upsert errors now log to console.warn instead of being
  swallowed by `void`. Earlier logcat confirmed upsert is firing and
  writing 'Jehejej' to SharedPreferences as expected.

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: JohnMcLear

packages/mobile/android/app/capacitor.build.gradle

@@ -10,6 +10,9 @@ android {
 apply from: "../capacitor-cordova-android-plugins/cordova.variables.gradle"
 dependencies {
     implementation project(':capacitor-app')
+    implementation project(':capacitor-browser')
+    implementation project(':capacitor-preferences')
+    implementation project(':capacitor-share')
 
 }