settings framework and section metadata keyed (487 -> 425)

SettingsSection now carries titleKey/descriptionKey instead of title/description, and
the sidebar and content pane resolve them. The section arrays are module-level consts
holding JSX content, so they cannot call a hook — the data holds keys and the renderers
translate. Sidebar search matches the RESOLVED words, so it works in the language on
screen.

Capital K in titleKey is load-bearing: docs-check-settings.ts greps key:\s*'…' for
route segments, and a lowercase title_key would have fed it twenty bogus paths.
Verified 0 bogus, 26 declared, 20 offered, 0 missing.

Section titles now share one key with the Spotlight rows that name the same section,
per 'one key per meaning'. Two casings had to converge, so Settings shows Spotlight's:
'Change Password' now reads 'Change password'.

Settings sidebar search placeholder was 'Search...'; it is now 'Search settings…',
which is what the skeleton catalog already said and what distinguishes it from the
global Spotlight.

src/apps/officer-web/Screens/Dashboard/Settings/SystemSettings.tsx

@@ -12,44 +12,56 @@ import { OCRSection } from './ServerSettings/OCRSection';
 
 const groups: SettingsSectionGroup[] = [
   {
-    label: 'AI',
+    labelKey: 'settings.groups.ai',
     icon: Bot,
     sections: [
       {
         key: 'tts',
         icon: Volume2,
-        title: 'Text to Speech',
-        description: 'TTS provider and voice',
+        titleKey: 'settings.sections.tts.label',
+        descriptionKey: 'settings.sections.tts.description',
         content: <TTSSection />,
       },
-      { key: 'stt', icon: Mic, title: 'Speech to Text', description: 'Whisper server URL', content: <STTSection /> },
+      {
+        key: 'stt',
+        icon: Mic,
+        titleKey: 'settings.sections.stt.label',
+        descriptionKey: 'settings.sections.stt.description',
+        content: <STTSection />,
+      },
       {
         key: 'ocr',
         icon: ScanText,
-        title: 'OCR',
-        description: 'Vision model for text extraction',
+        titleKey: 'settings.sections.ocr.label',
+        descriptionKey: 'settings.sections.ocr.description',
         content: <OCRSection />,
       },
     ],
   },
   {
-    label: 'Maintenance',
+    labelKey: 'settings.groups.maintenance',
     icon: Hammer,
     sections: [
       {
         key: 'maintenance',
         icon: Hammer,
-        title: 'Rebuild & restart',
-        description: 'Load changes without a terminal',
+        titleKey: 'settings.sections.maintenance.label',
+        descriptionKey: 'settings.sections.maintenance.description',
         content: <MaintenanceSection />,
       },
     ],
   },
   {
-    label: 'Email',
+    labelKey: 'settings.groups.email',
     icon: Mail,
     sections: [
-      { key: 'smtp', icon: Mail, title: 'SMTP', description: 'Email delivery provider', content: <SMTPSection /> },
+      {
+        key: 'smtp',
+        icon: Mail,
+        titleKey: 'settings.sections.smtp.label',
+        descriptionKey: 'settings.sections.smtp.description',
+        content: <SMTPSection />,
+      },
     ],
   },
 ];
@@ -59,7 +71,7 @@ const BASE_PATH = '/settings/system';
 const { Sidebar, Content, allSections } = createSettingsPanelComponents({
   basePath: BASE_PATH,
   sidebarIcon: Settings,
-  sidebarLabel: 'System',
+  sidebarLabelKey: 'settings.nav.system',
   groups,
 });