feat: Configure app service to restart automatically in Docker Compose and replace file-based restart trigger with process.exit().

src/modules/admin/update.service.ts

@@ -9,7 +9,6 @@ const execAsync = promisify(exec);
 
 // Constants
 const STALE_CONTEXT_MS = 10 * 60 * 1000; // 10 minutes
-const RESTART_TRIGGER_FILE = ".restart_trigger";
 
 export interface RestartContext {
     channelId: string;
@@ -77,12 +76,9 @@ export class UpdateService {
             // Run without awaiting - it may kill the process immediately
             exec(process.env.RESTART_COMMAND).unref();
         } else {
-            // Fallback to writing a trigger file (avoids polluting source code)
-            try {
-                await writeFile(RESTART_TRIGGER_FILE, Date.now().toString());
-            } catch (err) {
-                console.error("Failed to write restart trigger:", err);
-            }
+            // Fallback: exit the process and let Docker/PM2/systemd restart it
+            // Small delay to allow any pending I/O to complete
+            setTimeout(() => process.exit(0), 100);
         }
     }