Add dashboard token usage history (#240)

electron/main/ipc-handlers.ts

@@ -49,6 +49,7 @@ import { updateSkillConfig, getSkillConfig, getAllSkillConfigs } from '../utils/
 import { whatsAppLoginManager } from '../utils/whatsapp-login';
 import { getProviderConfig } from '../utils/provider-registry';
 import { deviceOAuthManager, OAuthProviderType } from '../utils/device-oauth';
+import { getRecentTokenUsageHistory } from '../utils/token-usage';
 
 /**
  * For custom/ollama providers, derive a unique key for OpenClaw config files
@@ -105,6 +106,9 @@ export function registerIpcHandlers(
   // Log handlers (for UI to read gateway/app logs)
   registerLogHandlers();
 
+  // Usage handlers
+  registerUsageHandlers();
+
   // Skill config handlers (direct file access, no Gateway RPC)
   registerSkillConfigHandlers();
 
@@ -1751,6 +1755,14 @@ function registerAppHandlers(): void {
   });
 }
 
+function registerUsageHandlers(): void {
+  ipcMain.handle('usage:recentTokenHistory', async (_, limit?: number) => {
+    const safeLimit = typeof limit === 'number' && Number.isFinite(limit)
+      ? Math.min(Math.max(Math.floor(limit), 1), 100)
+      : 20;
+    return await getRecentTokenUsageHistory(safeLimit);
+  });
+}
 /**
  * Window control handlers (for custom title bar on Windows/Linux)
  */