feat: improve UI/UX with scroll behavior and styling enhancements

- Remove white space at bottom of chat interface
- Prevent scroll bounce/overscroll behavior on all scroll areas
- Make scroll bar thinner and more subtle with low contrast
- Add hover effects for scroll bar visibility
- Clean up Docker container names for better display
- Improve overall scrolling experience and visual polish

frontend/src/components/ChatMessagesView.tsx

@@ -252,9 +252,9 @@ export function ChatMessagesView({
   };
 
   return (
-    <div className="flex flex-col h-full">
-      <ScrollArea className="flex-grow" ref={scrollAreaRef}>
-        <div className="p-4 md:p-6 space-y-2 max-w-4xl mx-auto pt-16">
+    <div className="flex flex-col h-full overflow-hidden">
+      <ScrollArea className="flex-1 min-h-0" ref={scrollAreaRef}>
+        <div className="p-4 md:p-6 pb-2 space-y-2 max-w-4xl mx-auto">
           {messages.map((message, index) => {
             const isLast = index === messages.length - 1;
             return (