feat: Implement initial Process Scheduling Simulator application with core logic, algorithms, UI components, and project setup.

src/components/Layout/MainArea.tsx

@@ -0,0 +1,25 @@
+import ControlBar from '../ControlBar/ControlBar';
+
+const MainArea = () => {
+  return (
+    <main className="flex-1 flex flex-col h-full bg-slate-900 overflow-hidden relative">
+      <div className="flex-1 flex flex-col">
+        <ControlBar />
+
+        {/* Placeholder for GanttChart — Phase 4 */}
+        <div className="border-b border-slate-800 h-80 flex items-center justify-center text-slate-600 bg-slate-900/50 text-sm">
+          [ Gantt Chart — Fase 4 ]
+        </div>
+
+        {/* Placeholder for MetricsPanel — Phase 5 */}
+        <div className="flex-1 flex items-center justify-center text-slate-600 bg-slate-950 p-6">
+          <div className="w-full h-full border border-dashed border-slate-700 rounded-xl flex items-center justify-center text-sm">
+            [ Metrics Panel — Fase 5 ]
+          </div>
+        </div>
+      </div>
+    </main>
+  );
+};
+
+export default MainArea;