Put every shortcut on one shared keymap and make the app keyboard-reachable

The keymap was scattered over ShortcutsService if-chains, the file panel's
key switch, macOS-only menu accelerators and hand-typed hints in 16
tooltips x 7 locales, and large parts of the app had no keyboard path at
all. src/shared/keymap.ts is now the one table: scopes, per-platform
defaults, exact matching, formatting with localized key names, conflicts,
reserved combos and native-menu accelerators, proven by keymap.spec.ts.

- ShortcutsService resolves against the effective keymap: claim() takes
  the key (preventDefault, held keys repeat only movement, never mid-IME),
  and from a text field only chords and F-keys fire. The file panel, App,
  editor, manager and Settings windows all dispatch through it.
- FileActionsService.run is the one file-command dispatcher for the list
  keys, the row menu, the macOS menu bar and the toolbar.
- New keys: the row menu (Shift+F10 / Menu / Ctrl+Return), the source
  picker (Mod+K), the path bar (Mod+L), transfers (Mod+J), sorting
  (Alt+1-7), Shift+movement selection, close other tabs, move and
  disconnect tabs, refresh and edit on Windows/Linux, permissions, copy
  path, reveal, trash, open in default app, editor find next/previous.
- Right-click menus: soft shortcut hints, icons on the everyday verbs
  (the toolbar's glyphs), section headers, scrolling, item keys while
  open, a highlighted first item when opened from the keyboard. The panel
  source picker now renders through the same menu.
- Dialogs: role=dialog, a Tab trap via cycleFocus (WKWebView skips
  buttons on Tab without Keyboard navigation), initial focus, Esc that
  stops propagating; the chmod dialog takes focus and applies on Enter.
- Fixed: Ctrl+Tab also flipped the active panel; Esc in a manager dialog
  closed the manager; Ctrl-F/T fired Cmd shortcuts on macOS; shortcuts
  fired under dialogs; keys died after any button click on macOS; the
  editor's save prompt and find box never got focus; WebView2 reload keys;
  a window could save default settings before its first load.
- Settings closes on its own close-window key (new settingsClose request).

Co-Authored-By: Claude <noreply@anthropic.com>

ui/src/app/skins/shadlike/tab-bar/tab-bar.ts

@@ -3,8 +3,9 @@ import { NgIcon } from '@ng-icons/core';
 import { ContextMenuService } from '@core/context-menu.service';
 import { I18nService } from '@core/i18n.service';
 import { PanelsService, type Workspace } from '@core/panels.service';
-import { IS_MAC_CHROME, MOD_LABEL } from '@core/platform';
+import { IS_MAC_CHROME } from '@core/platform';
 import { RpcService } from '@core/rpc.service';
+import { ShortcutsService } from '@core/shortcuts.service';
 import { UpdaterService } from '@core/updater.service';
 
 @Component({
@@ -63,7 +64,7 @@ import { UpdaterService } from '@core/updater.service';
               (click)="close($event, ws.id)"
               tabindex="-1"
               aria-hidden="true"
-              [title]="i18n.t('tabBar.closeTab', { mod: modLabel })"
+              [title]="i18n.t('tabBar.closeTab')"
               class="mr-1 grid size-4 shrink-0 place-items-center text-muted-foreground opacity-0 group-hover:opacity-100 hover:bg-border hover:text-foreground"
             >
               <ng-icon name="tdesignClose" size="0.7rem" />
@@ -79,7 +80,7 @@ import { UpdaterService } from '@core/updater.service';
       </div>
       <button
         (click)="panels.newWorkspace()"
-        [title]="i18n.t('tabBar.newTab', { mod: modLabel })"
+        [title]="shortcuts.tip(i18n.t('tabBar.newTab'), 'new-tab')"
         class="ml-0.5 grid size-6 place-items-center text-muted-foreground electrobun-webkit-app-region-no-drag hover:bg-accent hover:text-foreground"
       >
         <ng-icon name="tdesignAdd" size=".8rem" />
@@ -121,7 +122,7 @@ import { UpdaterService } from '@core/updater.service';
       <!-- connection manager (own native window) -->
       <button
         (click)="openManager()"
-        [title]="i18n.t('tabBar.manageConnections')"
+        [title]="shortcuts.tip(i18n.t('tabBar.manageConnections'), 'connection-manager')"
         class="grid h-6 px-2 py-1 place-items-center text-[0.6875rem] text-muted-foreground electrobun-webkit-app-region-no-drag hover:bg-accent hover:text-foreground"
       >
         <!-- <ng-icon name="tdesignSetting" size="0.9rem" /> -->
@@ -131,7 +132,7 @@ import { UpdaterService } from '@core/updater.service';
       <!-- settings (own native window) -->
       <button
         (click)="openSettings()"
-        [title]="i18n.t('tabBar.options')"
+        [title]="shortcuts.tip(i18n.t('tabBar.options'), 'open-settings')"
         class="grid size-6 place-items-center text-muted-foreground electrobun-webkit-app-region-no-drag hover:bg-accent hover:text-foreground"
       >
         <ng-icon name="tdesignSetting" size="0.9rem" />
@@ -145,8 +146,8 @@ export class TabBar {
   readonly updater = inject(UpdaterService);
   private readonly contextMenu = inject(ContextMenuService);
   private readonly rpc = inject(RpcService);
+  readonly shortcuts = inject(ShortcutsService);
   readonly isMacChrome = IS_MAC_CHROME;
-  readonly modLabel = MOD_LABEL;
 
   // drag & drop reordering
   readonly draggedId = signal<number | null>(null);
@@ -213,9 +214,7 @@ export class TabBar {
 
   /** Update pill: first click downloads, second click (when ready) applies + relaunches. */
   onUpdateClick(): void {
-    const state = this.updater.state();
-    if (state === 'available') void this.updater.download();
-    else if (state === 'ready') this.updater.apply();
+    this.updater.advance();
   }
 
   /** Insertion line at the drop position (inset shadow: no layout shift). */