App menu: the titlebar's "Settings and more" (Alt+F, F10, the palette, the account menu's last row) with rows from the site config; page zoom per tab in the host

Frame: AppMenu.tsx is a menu at the end of the titlebar cluster (before the caption buttons; macOS has none there). Its rows are `ShellSite.menu`: ordered groups of built-in rows by name and the app's own ({id, label, icon, shortcut, hint, when, checked, run | submenu}); `DEFAULT_MENU`, `menuWith` and `menuWithout` order, add and remove. A built-in row shows only when the app serves it (decks, `menu.languages`, themes, `menu.modes`, and `features`: zoom, store, workspaces, developer, updates), so no app gets a dead row. Language, Theme, Mode, Workspaces and Developer are submenus; Language and Theme apply live and keep the menu open, Mode asks the same keep-my-changes question as Settings (panel `menuModes()`). Keyboard: arrows, Home/End, type-ahead, the arrow along the reading direction opens a submenu, Esc closes one level; ARIA menu roles; submenus stay inside the window; one highlight for pointer and keys. It is an overlay like the other shell menus (the shell is raised, panes stay visible, nothing is dimmed).

Words: menuMessages.en.json (`wb.menu.*`), read through the framework i18n with that English as the fallback until the catalogs have them; words the panel already has are reused.

Host: `tab_zoom {id, factor}` (shell-only) sets a tab's page zoom with the engine's own zoom, clamped to 25%..500% and remembered per tab id in app data `zoom.json` (a number per tab id, nothing else; a closed tab's entry goes); without a factor it reads. A tab may forward four more shortcut names: `app-menu`, `zoom-in`, `zoom-out`, `zoom-reset`. The titlebar shows a zoom chip only while the pane in front is not at 100%.

create-waybetter: `tab_zoom` in the shell capability list; the template says which panel sections it lacks (store, updates) and how to add menu rows.

crates/waybetter-host/src/tabs.rs

@@ -159,6 +159,7 @@ pub fn new_window_mode<'a>(on_site: bool, site_mode: &'a str, external_mode: &'a
 pub const SHORTCUTS: &[&str] = &[
     "command-palette", "new-tab", "close-tab", "reopen-tab", "focus-address", "next-tab", "prev-tab", "reload",
     "back", "forward", "split-right", "split-down", "open-panel", "find", "hard-reload",
+    "app-menu", "zoom-in", "zoom-out", "zoom-reset",
     "column-prev", "column-next", "column-1", "column-2", "column-3", "column-4", "column-5", "column-6", "column-7",
     "column-8", "column-9", "column-page-prev", "column-page-next", "column-mark-read", "deck-compose", "deck-toggle",
 ];