feat(config): persist config.patch updates atomically

src/daemon/index.ts

@@ -54,7 +54,11 @@ export interface DaemonContext {
   browserManager?: BrowserManager;
 }
 
-export async function startDaemon(config: Config): Promise<DaemonContext> {
+export interface StartDaemonOptions {
+  configPath?: string;
+}
+
+export async function startDaemon(config: Config, options?: StartDaemonOptions): Promise<DaemonContext> {
   // ── Log level ──
   setLogLevel(config.log_level);
 
@@ -144,7 +148,7 @@ export async function startDaemon(config: Config): Promise<DaemonContext> {
   let channelAgents: ReturnType<typeof createMessageRouter>['agents'] | null = null;
 
   const gateway = createGateway({
-    config, sessionManager, modelRouter, systemPrompt, toolRegistry, toolExecutor,
+    config, configPath: options?.configPath, sessionManager, modelRouter, systemPrompt, toolRegistry, toolExecutor,
     channelRegistry, pairingManager, lifecycle, memoryStore,
     getChannelAgents: () => channelAgents, commandRegistry, intentRegistry, routingPolicy,
   });