- Remove navTussendoortjes button HTML, class toggle, and click listener
- Remaining nav items (Zoeken, Dagboek, Maaltijden) auto-distribute via flex:1
- Expose window.switchTab for test access (was IIFE-scoped)
- Update e2e tests: first test verifies button is gone, rest use
page.evaluate(() => switchTab('tussendoortjes'))
- Update inspiratie.spec.js helper to use switchTab via evaluate
- Sync docker/index.html with index.html
Resolves: t_3c830823
