f625e55526
Header layout:
- Redesign header-content as 3-column flex (left / center / right)
- Add #header-left div: dedicated slot for kiosk buttons (empty by default)
- header-title: flex-shrink auto, no more position:absolute centering hack
- header-actions: flex:1 1 0 + justify-content:flex-end (right)
- header-left: flex:1 1 0 (left) — equal width balances the title visually
Kiosk exit/refresh buttons:
- _injectKioskOverlay() now appends to #header-left instead of
insertBefore(firstChild) — buttons appear on LEFT, not mixed with center
DB migration:
- Add shopping_name TEXT DEFAULT '' to CREATE TABLE products schema
- Add ALTER TABLE migration in migrateDB() for existing databases
- Avoids repeated ALTER TABLE in seed code on every request
Demo mode UI:
- _applyDemoModeUI(): hides ⚙️ settings nav button in demo mode
- Suppresses first-run setup wizard when _demoMode === true
- Shows a small DEMO badge in header-left
- Called from both syncSettingsFromDB() and _initApp()