feat: broadcast history updates and hotkey restart via IPC

- IPC handler broadcasts history:updated to all windows after dictation
- Preload exposes onHistoryUpdated listener for live UI refresh
- Settings update triggers hotkey listener restart when hotkey changes
- Add broadcast dependency to IPC handler interface

Author: nicremo

src/main/ipc.ts

@@ -30,6 +30,8 @@ interface IpcDependencies {
   showMainWindow: () => void;
   hideMainWindow: () => void;
   ensureHotkeyListener: () => Promise<void>;
+  restartHotkeyListener: () => Promise<void>;
+  broadcast: (channel: string, payload: unknown) => void;
 }
 
 export function registerIpcHandlers(dependencies: IpcDependencies): void {
@@ -65,10 +67,19 @@ export function registerIpcHandlers(dependencies: IpcDependencies): void {
   ipcMain.handle('app:bootstrap', buildBootstrapState);
 
   ipcMain.handle('settings:update', async (_event, updates: UpdateSettingsInput) => {
+    const previousHotkey = dependencies.getSettings().hotkey;
     const nextSettings = await persistSettings(dependencies.getSettings(), updates);
     await ensureStorage(nextSettings);
     applyLaunchAtLogin(nextSettings.launchAtLogin);
     dependencies.setSettings(nextSettings);
+
+    if (updates.hotkey && (
+      updates.hotkey.keyCode !== previousHotkey.keyCode ||
+      updates.hotkey.modifiers !== previousHotkey.modifiers
+    )) {
+      await dependencies.restartHotkeyListener();
+    }
+
     return buildBootstrapState();
   });
 
@@ -220,7 +231,7 @@ export function registerIpcHandlers(dependencies: IpcDependencies): void {
       setStatus: dependencies.setStatus,
     });
 
-    await addHistoryEntry({
+    const history = await addHistoryEntry({
       rawText: result.rawText,
       finalText: result.finalText,
       transcriptionSource: result.transcriptionSource,
@@ -229,8 +240,13 @@ export function registerIpcHandlers(dependencies: IpcDependencies): void {
       appName: result.focusInfo?.appName,
     }).catch((error) => {
       console.warn('[openwhisp] Failed to save history entry:', error instanceof Error ? error.message : error);
+      return null;
     });
 
+    if (history) {
+      dependencies.broadcast('history:updated', history);
+    }
+
     return result;
   });
 

src/preload/index.ts

@@ -72,6 +72,11 @@ const api = {
     ipcRenderer.on('hotkey:event', wrapped);
     return () => ipcRenderer.removeListener('hotkey:event', wrapped);
   },
+  onHistoryUpdated: (listener: (history: HistoryEntry[]) => void) => {
+    const wrapped = (_event: Electron.IpcRendererEvent, history: HistoryEntry[]) => listener(history);
+    ipcRenderer.on('history:updated', wrapped);
+    return () => ipcRenderer.removeListener('history:updated', wrapped);
+  },
 };
 
 contextBridge.exposeInMainWorld('openWhisp', api);

src/renderer/env.d.ts

@@ -48,6 +48,7 @@ declare global {
       revealStorage: () => Promise<void>;
       onStatus: (listener: (status: AppStatus) => void) => () => void;
       onHotkey: (listener: (event: HotkeyEvent) => void) => () => void;
+      onHistoryUpdated: (listener: (history: HistoryEntry[]) => void) => () => void;
     };
   }
 }