feat: Add optimistic UI for video comments

- Implement optimistic updates for comment creation, deletion, resolution, tag, and content changes
- Enhance user experience by providing immediate feedback for comment actions
- Integrate `sonner` toasts for success and error notifications
- Improve video data fetching error handling and logging
- Refine active video version selection logic for robustness
- Simplify video detail not-found page, removing dynamic project link

app/layout.tsx

@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import { JetBrains_Mono } from "next/font/google";
 import { ThemeProvider } from "@/components/theme-provider";
+import { Toaster } from "sonner";
 import "./globals.css";
 
 const jetbrainsMono = JetBrains_Mono({
@@ -28,6 +29,7 @@ export default function RootLayout({
           disableTransitionOnChange
         >
           {children}
+          <Toaster />
         </ThemeProvider>
       </body>
     </html>