refine monitoring skeletons and navigation icons

src/data/mock.ts

@@ -1,4 +1,5 @@
 import {
+  MonitorPlay,
   Bell,
   Boxes,
   ChartNoAxesColumnIncreasing,
@@ -7,8 +8,8 @@ import {
   KeyRound,
   LayoutDashboard,
   Megaphone,
+  MonitorUp,
   Network,
-  Rocket,
   ServerCog,
   ShieldCheck,
   Users
@@ -31,7 +32,7 @@ export const navGroups = [
       },
       {
         label: '런처',
-        icon: Rocket,
+        icon: MonitorPlay,
         children: [
           { label: '소스 관리', view: 'launcherSources' },
           { label: '빌드 관리', view: 'launcherBuilds' },
@@ -67,7 +68,7 @@ export const navGroups = [
       },
       {
         label: '에이전트',
-        icon: ShieldCheck,
+        icon: MonitorUp,
         children: [
           { label: '장비 등록' },
           { label: '장비 제어' },