CHORE(merge): merge from develop

- Initial setup and all features from develop branch
- Includes: auth, deploy, docker, style fixes
- K3S deployment configuration

nextjs/app/(subpages)/layout.tsx

@@ -0,0 +1,20 @@
+import React from "react";
+import SubNavbar from "@/components/widgets/SubNavbar";
+
+export default function SubPagesLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <div>
+      <SubNavbar />
+      <div className="flex items-center justify-center">
+        <div className="w-full flex items-center justify-center">
+          {children}
+        </div>
+      </div>
+    </div>
+  );
+}
+