feat: add provider usage tracking

src/gateway/server-methods.ts

@@ -17,6 +17,7 @@ import type {
   GatewayRequestHandlers,
   GatewayRequestOptions,
 } from "./server-methods/types.js";
+import { usageHandlers } from "./server-methods/usage.js";
 import { voicewakeHandlers } from "./server-methods/voicewake.js";
 import { webHandlers } from "./server-methods/web.js";
 import { wizardHandlers } from "./server-methods/wizard.js";
@@ -38,6 +39,7 @@ const handlers: GatewayRequestHandlers = {
   ...systemHandlers,
   ...nodeHandlers,
   ...sendHandlers,
+  ...usageHandlers,
   ...agentHandlers,
 };
 

src/gateway/server-methods/usage.ts

@@ -0,0 +1,10 @@
+import { loadProviderUsageSummary } from "../../infra/provider-usage.js";
+import type { GatewayRequestHandlers } from "./types.js";
+
+export const usageHandlers: GatewayRequestHandlers = {
+  "usage.status": async ({ respond }) => {
+    const summary = await loadProviderUsageSummary();
+    respond(true, summary, undefined);
+  },
+};
+

src/gateway/server.ts

@@ -205,6 +205,7 @@ const METHODS = [
   "health",
   "providers.status",
   "status",
+  "usage.status",
   "config.get",
   "config.set",
   "config.schema",