core: skip app/started hook on cli mode

packages/hydrooj/src/entry/cli.ts

@@ -106,6 +106,5 @@ export async function load() {
     await model(pending, fail);
     require('../script/index');
     await script(pending, fail, []);
-    await bus.parallel('app/started');
     await cli();
 }

packages/hydrooj/src/loader.ts

@@ -74,6 +74,7 @@ export async function load() {
 }
 
 export async function loadCli() {
+    process.env.HYDRO_CLI = 'true';
     await require('./entry/cli').load();
     setTimeout(() => process.exit(0), 300);
 }