keyed the dock, header and shell chrome (555 -> 487)

Layout reaches zero. The dock, header, user menu, theme switcher, spotlight,
shortcuts modal, screen-error fallback, rescan and bug report.

Three things worth knowing:

CORE_DOCK_ITEMS now carries labelKey instead of label, and one useDockItems() hook
resolves the composed list. DashboardLayout, Spotlight and DockSettings each spread
the same two sources before, so each would have had to resolve labels itself.
Plugin tiles keep the name from their own manifest — a plugin's strings are not ours.

Spotlight resolves labels INSIDE the hook, so rank() still matches what the reader
can see rather than a dot-path. Its to: '/settings/...' literals are untouched, which
is what docs:check parses — verified still 20 offered, 0 missing.

The rescan toast said 'N skill(s)'. That is English giving up on a plural, so it is
now a real plural entry per noun and reads correctly at 0, 1 and 2 in both locales.

ThemeSwitcher used t as its theme loop variable; renamed to entry.

src/apps/officer-web/Screens/Dashboard/Layout/Dock.tsx

@@ -1,10 +1,12 @@
-import { useEffect, useRef, useState } from 'react';
+import { useEffect, useMemo, useRef, useState } from 'react';
 import { NavLink } from 'react-router';
 import type { LucideIcon } from 'lucide-react';
 import { resolveIcon } from 'officerdev';
 import type { PluginManifest } from 'hooks/usePermissions';
+import { useTranslation, type AppTranslationKey } from '@/lib/i18n';
 
 export type DockItem = {
+  /** Already resolved for the active locale — see `useDockItems`. */
   label: string;
   to: string;
   color: string;
@@ -169,22 +171,22 @@ import {
  * These are the baseline — chat, files, the terminal and the app's own screens — plus Gitea, which is in
  * the light profile because it fronts a remote instance and installs nothing locally.
  */
-export const CORE_DOCK_ITEMS: DockItem[] = [
-  { label: 'Home', to: '/', icon: Home, color: '#f59e0b' },
-  { label: 'Files', to: '/files', icon: FolderOpen, color: '#fbbf24' },
-  { label: 'Chat', to: '/chat', icon: MessageCircle, color: '#60a5fa' },
-  { label: 'Command HQ', to: '/command-hq', icon: Radar, color: '#f43f5e' },
-  { label: 'Editor', to: '/code-editor', icon: Code, color: '#a78bfa' },
-  { label: 'Jobs', to: '/jobs', icon: Workflow, color: '#14b8a6' },
-  { label: 'Terminal', to: '/terminal', icon: Monitor, color: '#f97316' },
-  { label: 'Browser', to: '/browser', icon: Globe, color: '#06b6d4' },
-  { label: 'Monitor', to: '/system-monitor', icon: Activity, color: '#0ea5e9' },
-  { label: 'Activity', to: '/activity', icon: Radio, color: '#f59e0b' },
-  { label: 'Dashboards', to: '/dashboards', icon: LayoutGrid, color: '#8b5cf6' },
+export const CORE_DOCK_ITEMS: CoreDockItem[] = [
+  { labelKey: 'nav.home', to: '/', icon: Home, color: '#f59e0b' },
+  { labelKey: 'nav.files', to: '/files', icon: FolderOpen, color: '#fbbf24' },
+  { labelKey: 'nav.chat', to: '/chat', icon: MessageCircle, color: '#60a5fa' },
+  { labelKey: 'nav.commandHq', to: '/command-hq', icon: Radar, color: '#f43f5e' },
+  { labelKey: 'nav.editor', to: '/code-editor', icon: Code, color: '#a78bfa' },
+  { labelKey: 'nav.jobs', to: '/jobs', icon: Workflow, color: '#14b8a6' },
+  { labelKey: 'nav.terminal', to: '/terminal', icon: Monitor, color: '#f97316' },
+  { labelKey: 'nav.browser', to: '/browser', icon: Globe, color: '#06b6d4' },
+  { labelKey: 'nav.monitor', to: '/system-monitor', icon: Activity, color: '#0ea5e9' },
+  { labelKey: 'nav.activity', to: '/activity', icon: Radio, color: '#f59e0b' },
+  { labelKey: 'nav.dashboards', to: '/dashboards', icon: LayoutGrid, color: '#8b5cf6' },
   // Core because it is the door into another account's filesystem, and the permission that gates it is
   // `kind: 'app'` — so `canVisit()` hides the tile from anyone not granted it, which is the same treatment
   // every other grantable tile here gets.
-  { label: 'SendOff', to: '/sendoff', icon: Send, color: '#22d3ee' },
+  { labelKey: 'nav.sendOff', to: '/sendoff', icon: Send, color: '#22d3ee' },
   // Core since 2026-08-19. These were contributed by the app-store `caldav` entry until calendar and
   // contacts became core, and deleting that entry took their tiles with it — the routes kept working
   // while the dock and the settings list went silent about them, which is exactly the shape of failure
@@ -194,16 +196,16 @@ export const CORE_DOCK_ITEMS: DockItem[] = [
   // the same voxel mark the phone apps show. `tile: 'bare'` for the same reason a plugin's artwork
   // does — the art brings its own frame, and a coloured square behind it reads as a mistake. `color`
   // still earns its place: the active glow, the indicator dot and the settings tint all use it.
-  { label: 'Calendar', to: '/calendar', image: '/icons/calendar.png', tile: 'bare', color: '#ef4444' },
-  { label: 'Contacts', to: '/contacts', image: '/icons/contacts.png', tile: 'bare', color: '#8b5cf6' },
+  { labelKey: 'nav.calendar', to: '/calendar', image: '/icons/calendar.png', tile: 'bare', color: '#ef4444' },
+  { labelKey: 'nav.contacts', to: '/contacts', image: '/icons/contacts.png', tile: 'bare', color: '#8b5cf6' },
   // Core because the tailnet is the perimeter — origin checking was removed on the grounds that the
   // tailnet stands in its place, so administering it cannot be an optional extra. It is `kind: 'admin'`,
   // and DashboardLayout filters every tile through canVisit(), so a member never sees this one.
   // Core by necessity: the store is how every other feature arrives, so it can never be one of the
   // things that disappears when uninstalled.
-  { label: 'App store', to: '/app-store', icon: Store, color: '#64748b' },
+  { labelKey: 'nav.appStore', to: '/app-store', icon: Store, color: '#64748b' },
   // Core, not contributed by a plugin: this is the screen that installs them, so it cannot arrive with one.
-  { label: 'Marketplace', to: '/marketplace', icon: Puzzle, color: '#94a3b8' },
+  { labelKey: 'nav.marketplace', to: '/marketplace', icon: Puzzle, color: '#94a3b8' },
 ];
 
 /**
@@ -213,6 +215,30 @@ export const CORE_DOCK_ITEMS: DockItem[] = [
  * have to survive being JSON from a marketplace. An unknown name resolves to a neutral box rather than
  * throwing: a plugin naming an icon this build does not have should look plain, not break the dock.
  */
+/**
+ * A shell tile before its label is resolved. `labelKey` rather than `label` because these are the only
+ * dock entries the platform owns the words for — a plugin's tile carries the name from its own manifest,
+ * which is the plugin's string and not ours to translate (docs/localization.md open question 3).
+ */
+type CoreDockItem = Omit<DockItem, 'label'> & { labelKey: AppTranslationKey };
+
+/**
+ * The composed dock, with the shell's own labels in the active locale.
+ *
+ * One place rather than three: DashboardLayout, Spotlight and DockSettings each built this list by
+ * spreading the same two sources, and each would otherwise have to resolve labels itself.
+ */
+export function useDockItems(plugins: PluginManifest[]): DockItem[] {
+  const { t } = useTranslation();
+  return useMemo(
+    () => [
+      ...CORE_DOCK_ITEMS.map(({ labelKey, ...item }) => ({ ...item, label: t(labelKey) })),
+      ...dockItemsFromPlugins(plugins),
+    ],
+    [t, plugins],
+  );
+}
+
 export function dockItemsFromPlugins(plugins: PluginManifest[]): DockItem[] {
   return plugins.flatMap((plugin) => {
     const tile = (t: {