feat: update dependencies and enhance privacy policy

Replace "@vercel/analytics" with "@tryghost/content-api" and add 
"node-fetch" to dependencies. Remove "@vercel/speed-insights" to 
streamline the package. Update robots.txt to dis access to 
"/legal-notice" and "/privacy-policy". Change <p> tags to <div> in 
the Privacy Policy for better structure. Update the last modified 
date in the Legal Notice. Add a new API route for fetching images 
with error handling for missing URL parameters.

app/api/fetchImage/route.tsx

@@ -0,0 +1,35 @@
+import { NextRequest, NextResponse } from "next/server";
+
+export async function GET(req: NextRequest) {
+  const { searchParams } = new URL(req.url);
+  const url = searchParams.get("url");
+
+  if (!url) {
+    return NextResponse.json(
+      { error: "Missing URL parameter" },
+      { status: 400 },
+    );
+  }
+
+  try {
+    const response = await fetch(url);
+    if (!response.ok) {
+      throw new Error(`Failed to fetch image: ${response.statusText}`);
+    }
+
+    const contentType = response.headers.get("content-type");
+    const buffer = await response.arrayBuffer();
+
+    return new NextResponse(buffer, {
+      headers: {
+        "Content-Type": contentType || "application/octet-stream",
+      },
+    });
+  } catch (error) {
+    console.error("Failed to fetch image:", error);
+    return NextResponse.json(
+      { error: "Failed to fetch image" },
+      { status: 500 },
+    );
+  }
+}