feat(state): store story panel and prefs UI state

src/state/store.ts

@@ -1,4 +1,5 @@
 import { create } from 'zustand';
+import { getPrefs, setPrefs as persistPrefs, type GamePrefs } from './prefs';
 import type { GameView } from './viewModel';
 
 /**
@@ -9,10 +10,26 @@ import type { GameView } from './viewModel';
 
 const MAX_LOG_LINES = 50;
 
+export interface StoryLogEntry {
+  nodeId: string;
+  prose: string;
+  choiceLabel?: string;
+}
+
 export interface GameStoreState extends GameView {
   log: string[];
+  storyPanelOpen: boolean;
+  storyHasUnread: boolean;
+  storyLog: StoryLogEntry[];
+  prefs: GamePrefs;
+  settingsOpen: boolean;
   setView: (view: GameView) => void;
   appendLog: (line: string) => void;
+  appendStoryLog: (entry: StoryLogEntry) => void;
+  setStoryPanelOpen: (open: boolean) => void;
+  setStoryHasUnread: (unread: boolean) => void;
+  setPrefs: (partial: Partial<GamePrefs>) => void;
+  setSettingsOpen: (open: boolean) => void;
 }
 
 export const useGameStore = create<GameStoreState>((set) => ({
@@ -25,6 +42,19 @@ export const useGameStore = create<GameStoreState>((set) => ({
   actions: [],
   story: { currentProse: null, choices: [] },
   log: [],
-  setView: (view) => set(view),
+  storyPanelOpen: false,
+  storyHasUnread: false,
+  storyLog: [],
+  prefs: getPrefs(),
+  settingsOpen: false,
+  setView: (view) => set((state) => ({ ...state, ...view })),
   appendLog: (line) => set((state) => ({ log: [...state.log, line].slice(-MAX_LOG_LINES) })),
+  appendStoryLog: (entry) => set((state) => ({ storyLog: [...state.storyLog, entry] })),
+  setStoryPanelOpen: (open) => set({ storyPanelOpen: open }),
+  setStoryHasUnread: (unread) => set({ storyHasUnread: unread }),
+  setPrefs: (partial) => {
+    const prefs = persistPrefs(partial);
+    set({ prefs });
+  },
+  setSettingsOpen: (open) => set({ settingsOpen: open }),
 }));