Update -> refactor and optimize UI , code ,...

public/assets/js/main.js

@@ -1,40 +1 @@
-document.addEventListener("DOMContentLoaded", () => {
-
-    const textarea = document.querySelector("textarea");
-    const form = document.querySelector("form");
-    const copyBtn = document.getElementById("copyBtn");
-
-
-    if (textarea) {
-        textarea.addEventListener("input", () => {
-            textarea.style.height = "auto";
-            textarea.style.height = textarea.scrollHeight + "px";
-        });
-    }
-
-    if (form && textarea) {
-        form.addEventListener("submit", (e) => {
-            if (textarea.value.trim() === "") {
-                e.preventDefault();
-                alert("Paste cannot be empty");
-            }
-        });
-    }
-
-    if (copyBtn) {
-        copyBtn.addEventListener("click", () => {
-            const paste = document.getElementById("pasteContent");
-
-            if (!paste) return;
-
-            navigator.clipboard.writeText(paste.innerText)
-                .then(() => {
-                    copyBtn.textContent = "Copied!";
-                    setTimeout(() => {
-                        copyBtn.textContent = "Copy";
-                    }, 2000);
-                });
-        });
-    }
-
-});
+/* merged into app.js */