- Add global settings & pause modal (gear icon) with mute and reset, removing obsolete bag button
- Extend Prologue with Flo Maier (castle fire game over & Löschzug restart) and Viktor (vampire bite game over & Knoblauch restart)
- Rebuild Akt II as 3-level vertical Doodle Jump climber to rescue sisters Saskia, Maja, and Miriam with custom pixel portraits
- Update Akt III Schankraum with seamless oak floor, double-tap 'Luke zum Party Bunker', duel intro modals, and Hansi's departure in Hinterland
- Rebuild Akt IV as 3-lane medieval Guitar Hero rock concert with live crowd meter, combo multipliers, and Hansi duo
- Update AGENTS.md architectural documentation and playtest test suite