bug fixes and other minor improvments

src/render/components/control/drop.js

@@ -1,6 +1,11 @@
 const onDrop = async (e) => {
     const file = e.dataTransfer.items[0].getAsFile();
 
+    if (file.size >= 1 * 1000 * 1000) {
+        alert("File must be under 1MB.");
+        return;
+    }
+
     const buffer = await file.arrayBuffer();
     const b64String = await window.mainApi.invoke("encode", buffer);
 

src/render/components/control/text.js

@@ -46,11 +46,17 @@ function useText(elementId, left, typing)
 
             if (e.key === "Enter" && el.value)
             {
+                if (el.value.length >= 250) {
+                    alert("250 character limit")
+                    return;
+                }
+
                 window.mainApi.send("message", { 
                     category: "text", 
                     text: el.value,
                     blob: null
                 });
+
                 show.value = false;
             }
         });