refactor(web-panel): update architecture + cheat i18n

Reorganize the panel around product capabilities and integrate the
remote i18n feature from origin/master into the new structure.

- Restructure src into capability features (app, trainer, library,
  remote-session, appearance, shared); move the bridge to bridge/src.
- Add lingui-based UI localization and wrap remaining user-facing
  strings (Trans / msg macros); fix the 'END В·' mojibake.
- Port WeMod cheat-metadata i18n: capture the access token from the
  snapshot's renderer in the bridge and fetch localized trainer_meta
  in remote-session.i18n; guarantee snapshot sync on token failure.
- Wire vitest to the app's lingui/preact pipeline (mergeConfig).

web-panel/src/trainer/controls/ToggleControl.tsx

@@ -0,0 +1,20 @@
+import { cn } from '@/shared/lib/ui';
+
+import type { ControlInternalProps } from './shared';
+
+export const ToggleControl = ({ value, disabled, onChange }: ControlInternalProps) => {
+  const checked = Boolean(value);
+  const handleClick = () => onChange(!checked);
+
+  return (
+    <button
+      type="button"
+      aria-pressed={checked}
+      disabled={disabled}
+      className={cn('relative h-[26px] w-11 shrink-0 self-center rounded-full border transition-all disabled:cursor-not-allowed disabled:opacity-50', checked ? 'border-(--deck-accent) bg-[color-mix(in_oklab,var(--deck-accent)_22%,transparent)] shadow-[0_0_0_4px_color-mix(in_oklab,var(--deck-accent)_12%,transparent)]' : 'border-white/10 bg-white/[0.05]')}
+      onClick={handleClick}
+    >
+      <span className={cn('absolute top-0.5 size-5 rounded-full transition-all', checked ? 'left-5 bg-(--deck-accent) shadow-[0_0_8px_color-mix(in_oklab,var(--deck-accent)_50%,transparent)]' : 'left-0.5 bg-(--deck-fg-3)')} />
+    </button>
+  );
+};