copy: rename site branding to Krishna

components/layout/Footer.tsx

@@ -2,7 +2,7 @@ export function Footer() {
   return (
     <footer className="border-t border-border mt-16 py-8 text-center">
       <p className="font-mono text-sm text-ink-soft">
-        © {new Date().getFullYear()} blog. All rights reserved.
+        © {new Date().getFullYear()} Krishna A. All rights reserved.
       </p>
     </footer>
   )

components/layout/Header.tsx

@@ -23,7 +23,7 @@ export function Header() {
     >
       <div className="max-w-4xl mx-auto px-6 py-4 flex items-center justify-between">
         <Link href="/" className="heading-sm text-ink hover:text-accent transition-colors">
-          blog
+          Krishna
         </Link>
         <div className="flex items-center gap-8">
           {navLinks.map((link) => {