feat(state): story trigger orchestration and auto-open rules

src/state/storyOrchestration.ts

@@ -0,0 +1,49 @@
+import type { GameContent } from '../content/index';
+import type { GameState } from '../engine/game';
+import { evaluateTriggers, type StoryEvent, type TriggerContext } from '../engine/story';
+import type { GamePrefs } from './prefs';
+import type { StoryLogEntry } from './store';
+
+export interface StoryUiEffect {
+  enteredNodeIds: string[];
+  logEntries: StoryLogEntry[];
+  shouldOpenPanel: boolean;
+  eventLogLines: string[];
+}
+
+export function storyEventsToLogEntries(events: StoryEvent[]): StoryLogEntry[] {
+  return events
+    .filter((e) => e.kind === 'enter')
+    .map((e) => ({ nodeId: e.nodeId, prose: e.prose, choiceLabel: e.choiceLabel }));
+}
+
+export function shouldAutoOpenPanel(
+  prefs: GamePrefs,
+  nodeId: string,
+  content: GameContent,
+): boolean {
+  const node = content.storyNodesById[nodeId];
+  if (!node) return false;
+  if (prefs.storyOpenMode === 'manual') return false;
+  if (prefs.storyOpenMode === 'auto') return true;
+  return (node.choices?.length ?? 0) > 0;
+}
+
+export function processStoryTriggers(
+  state: GameState,
+  content: GameContent,
+  ctx: TriggerContext,
+  prefs: GamePrefs,
+): StoryUiEffect {
+  const { enteredNodeIds, events } = evaluateTriggers(state, content, ctx);
+  const logEntries = storyEventsToLogEntries(events);
+  const shouldOpenPanel =
+    enteredNodeIds.length > 0 &&
+    enteredNodeIds.some((id) => shouldAutoOpenPanel(prefs, id, content));
+  const eventLogLines = logEntries.map((e) =>
+    e.choiceLabel
+      ? `Story: ${e.choiceLabel}`
+      : `Story: ${content.storyNodesById[e.nodeId]?.prose.slice(0, 40)}…`,
+  );
+  return { enteredNodeIds, logEntries, shouldOpenPanel, eventLogLines };
+}