feat(sasch40): improve Act III, add state persistence and fix portraits

- Fix character portrait crops and version assets to portrait_v2, ensuring correct identities (resolving Nat/Verena mismatch)
- Update Schankraum scene image and configure Nginx cache-control to prevent stale asset caching
- Make secret beer tap completely invisible in tavern until clicked
- Reposition room hotspots in Act III to eliminate overlapping click targets
- Add exit button [✕] to Bavarian Gstanzl duel minigame
- Implement localStorage persistence in gameStore to maintain progress across page reloads
- Enable clean game state and storage reset when clicking "Nochmal spielen"
- Expand automated playtest script to cover Nat dialogue, duel exit, reload persistence, and game restart

projects/sasch40/frontend/src/stores/gameStore.ts

@@ -17,8 +17,12 @@ export interface GameState {
   soundMuted: boolean
 }
 
-export const useGameStore = defineStore('game', {
-  state: (): GameState => ({
+export const STORAGE_KEY = 'sasch40_game_save_v1'
+
+const VALID_ACTS: GameAct[] = ['intro', 'prologue', 'platformer', 'tavern', 'party_express', 'finale']
+
+function getInitialState(): GameState {
+  const defaults: GameState = {
     currentAct: 'intro',
     kronkorken: 0,
     beers: 0,
@@ -30,7 +34,66 @@ export const useGameStore = defineStore('game', {
     startTime: Date.now(),
     elapsedSeconds: 0,
     soundMuted: false,
-  }),
+  }
+
+  if (typeof window === 'undefined' || !window.localStorage) {
+    return defaults
+  }
+
+  try {
+    const raw = localStorage.getItem(STORAGE_KEY)
+    if (!raw) return defaults
+    const parsed = JSON.parse(raw)
+    if (parsed && typeof parsed === 'object') {
+      const state: GameState = {
+        currentAct: VALID_ACTS.includes(parsed.currentAct) ? parsed.currentAct : 'intro',
+        kronkorken: typeof parsed.kronkorken === 'number' && !isNaN(parsed.kronkorken) ? parsed.kronkorken : 0,
+        beers: typeof parsed.beers === 'number' && !isNaN(parsed.beers) ? parsed.beers : 0,
+        guestsServed: typeof parsed.guestsServed === 'number' && !isNaN(parsed.guestsServed) ? parsed.guestsServed : 0,
+        gstanzlWon: Boolean(parsed.gstanzlWon),
+        partyMood: typeof parsed.partyMood === 'number' && !isNaN(parsed.partyMood) ? parsed.partyMood : 20,
+        inventory: Array.isArray(parsed.inventory) ? parsed.inventory : defaults.inventory,
+        unlockedEasterEggs: Array.isArray(parsed.unlockedEasterEggs) ? parsed.unlockedEasterEggs : [],
+        startTime: typeof parsed.startTime === 'number' ? parsed.startTime : defaults.startTime,
+        elapsedSeconds: typeof parsed.elapsedSeconds === 'number' ? parsed.elapsedSeconds : 0,
+        soundMuted: Boolean(parsed.soundMuted)
+      }
+      if (state.soundMuted) {
+        sound.setMuted(true)
+      }
+      return state
+    }
+  } catch (e) {
+    console.warn('Failed to parse saved game state:', e)
+  }
+
+  return defaults
+}
+
+export function saveStateToStorage(state: GameState) {
+  if (typeof window === 'undefined' || !window.localStorage) return
+  try {
+    const dataToSave = {
+      currentAct: state.currentAct,
+      kronkorken: state.kronkorken,
+      beers: state.beers,
+      guestsServed: state.guestsServed,
+      gstanzlWon: state.gstanzlWon,
+      partyMood: state.partyMood,
+      inventory: state.inventory,
+      unlockedEasterEggs: state.unlockedEasterEggs,
+      startTime: state.startTime,
+      elapsedSeconds: state.elapsedSeconds,
+      soundMuted: state.soundMuted
+    }
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(dataToSave))
+  } catch (e) {
+    console.warn('Failed to save game state to localStorage:', e)
+  }
+}
+
+export const useGameStore = defineStore('game', {
+  state: (): GameState => getInitialState(),
 
   getters: {
     isArcadeMode(state): boolean {
@@ -135,6 +198,13 @@ export const useGameStore = defineStore('game', {
     },
 
     resetGame() {
+      if (typeof window !== 'undefined' && window.localStorage) {
+        try {
+          localStorage.removeItem(STORAGE_KEY)
+        } catch (e) {
+          console.warn('Failed to clear saved state', e)
+        }
+      }
       this.currentAct = 'intro'
       this.kronkorken = 0
       this.beers = 0
@@ -145,6 +215,7 @@ export const useGameStore = defineStore('game', {
       this.unlockedEasterEggs = []
       this.startTime = Date.now()
       this.elapsedSeconds = 0
+      saveStateToStorage(this.$state)
     }
   }
 })