DebugToggle reads debugMode from user-settings.devTools and
toggles via setPref. Removes the standalone stores/debug-store.ts
(no consumers left). Body classlist update only fires after the
store is hydrated to avoid a flash on initial paint.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* feat(debug-store): Zustand store met hydration-flag voor debug-modus
* feat(status-bar): dev-only debug-toggle via geïsoleerde sub-component
* feat(globals.css): debug-mode overlay CSS voor data-debug-id elementen
* feat(shared): data-debug-id+label op navigatie-componenten
* feat(shared): data-debug-id+label op form/select-componenten
* feat(shared): data-debug-id+label op display-componenten
