addons: implement JWT decoding utility and enhance role-based navigation in ProtectedRoute; fix deadlines task data on admin-role user;

src/Pages/utils/decodeJWT.ts

@@ -0,0 +1,20 @@
+export const decodeJWT = <T = any>(token: string): T | null => {
+  try {
+    const payload = token.split(".")[1];
+    if (!payload) return null;
+
+    const base64 = payload
+      .replace(/-/g, "+")
+      .replace(/_/g, "/");
+
+    const padded = base64.padEnd(
+      base64.length + ((4 - (base64.length % 4)) % 4),
+      "="
+    );
+
+    return JSON.parse(window.atob(padded));
+  } catch (error) {
+    console.error("Gagal decode JWT:", error);
+    return null;
+  }
+};