feat(config): persist config.patch updates atomically

src/cli/setup.ts

@@ -34,7 +34,7 @@ export async function runSetup(configPath: string): Promise<void> {
         const { startDaemon } = await import('../daemon/index.js');
         const { loadConfig } = await import('../config/index.js');
         const config = loadConfig(configPath);
-        const daemon = await startDaemon(config);
+        const daemon = await startDaemon(config, { configPath });
         await new Promise<void>(resolve => daemon.lifecycle.onShutdown(async () => resolve()));
         return;
       }

src/cli/start.ts

@@ -44,7 +44,7 @@ export function registerStartCommand(program: Command): void {
 
       // Dynamic import to avoid loading daemon code for other commands
       const { startDaemon } = await import('../daemon/index.js');
-      const daemon = await startDaemon(config);
+      const daemon = await startDaemon(config, { configPath });
 
       if (config.telegram) {
         console.log(`Allowed Telegram chat IDs: ${config.telegram.allowed_chat_ids.join(', ')}`);