fix: pass session start timestamp to recordSession

Preserves the actual session start time instead of using Date.now() at
recording time, so session duration and leaderboard timestamps are accurate.

Author: patniko

src/main/ipc-handlers.ts

@@ -138,8 +138,8 @@ export function registerIpcHandlers(mainWindow: BrowserWindow): void {
     return stats.getAllSessions();
   });
 
-  ipcMain.handle('stats:recordSession', (_event, sessionStats: SessionStats) => {
-    stats.recordSession(sessionStats);
+  ipcMain.handle('stats:recordSession', (_event, sessionStats: SessionStats, timestamp?: number) => {
+    stats.recordSession(sessionStats, timestamp);
   });
 
   ipcMain.handle('stats:getLifetimeStats', () => {

src/main/stats-service.ts

@@ -112,9 +112,9 @@ const store = new Store<StoreSchema>({
 });
 
 export class StatsService {
-  recordSession(stats: SessionStats): void {
+  recordSession(stats: SessionStats, timestamp?: number): void {
     const sessions = store.get('sessions');
-    sessions.push({ ...stats, timestamp: Date.now(), cwd: store.get('currentCwd') || undefined });
+    sessions.push({ ...stats, timestamp: timestamp ?? Date.now(), cwd: store.get('currentCwd') || undefined });
     store.set('sessions', sessions);
 
     // Update all-time bests

src/preload/preload.ts

@@ -74,8 +74,8 @@ contextBridge.exposeInMainWorld('statsAPI', {
   getAllTimeBests(): Promise<Record<string, number>> {
     return ipcRenderer.invoke('stats:getAllTimeBests');
   },
-  recordSession(stats: unknown): Promise<void> {
-    return ipcRenderer.invoke('stats:recordSession', stats);
+  recordSession(stats: unknown, timestamp?: number): Promise<void> {
+    return ipcRenderer.invoke('stats:recordSession', stats, timestamp);
   },
   getLifetimeStats(): Promise<{ lifetimeTokens: number; totalSessions: number; longestStreak: number; currentStreak: number; fastestResponse: number }> {
     return ipcRenderer.invoke('stats:getLifetimeStats');

src/renderer/App.tsx

@@ -325,7 +325,7 @@ export default function App() {
         linesRemoved: stats.linesRemoved,
         toolCalls: stats.toolCalls,
         durationMs,
-      });
+      }, start);
       // Save session replay events
       sessionRecorder.save();
 

src/renderer/types/global.d.ts

@@ -23,7 +23,7 @@ interface StatsAPI {
   getAllSessions(): Promise<(SessionStats & { timestamp: number; cwd?: string })[]>;
   getTopSessions(limit: number): Promise<unknown[]>;
   getAllTimeBests(): Promise<Partial<Record<keyof SessionStats, number>>>;
-  recordSession(stats: SessionStats): Promise<void>;
+  recordSession(stats: SessionStats, timestamp?: number): Promise<void>;
   getLifetimeStats(): Promise<LifetimeStats>;
   getCurrentSessionRank(totalTokens: number): Promise<number>;
   getAchievements(): Promise<Achievement[]>;