CHORE(merge): merge from develop

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

nextjs/proxy.ts

@@ -0,0 +1,41 @@
+import { NextRequest, NextResponse } from "next/server";
+
+export async function proxy(req: NextRequest) {
+  const { pathname } = req.nextUrl;
+
+  // 로그인/회원가입 페이지는 세션 쿠키가 있으면 홈으로 리다이렉트
+  if (pathname.startsWith("/login") || pathname.startsWith("/signup")) {
+    const sessionToken = req.cookies.get("authjs.session-token") ||
+                        req.cookies.get("__Secure-authjs.session-token");
+
+    if (sessionToken) {
+      return NextResponse.redirect(new URL("/", req.url));
+    }
+    return NextResponse.next();
+  }
+
+  // 보호된 경로 설정 - 공지사항 작성, 갤러리 작성 페이지
+  if (pathname.startsWith("/announcements/create") || pathname.startsWith("/gallery/write")) {
+    const sessionToken = req.cookies.get("authjs.session-token") ||
+                        req.cookies.get("__Secure-authjs.session-token");
+    if (!sessionToken) {
+      return NextResponse.redirect(new URL("/login", req.url));
+    }
+  }
+
+  return NextResponse.next();
+}
+
+export const config = {
+  matcher: [
+    /*
+     * Match all request paths except for the ones starting with:
+     * - api (API routes)
+     * - _next/static (static files)
+     * - _next/image (image optimization files)
+     * - favicon.ico (favicon file)
+     */
+    "/((?!api|_next/static|_next/image|favicon.ico|.*\\..*|icon.png).*)",
+  ],
+};
+