feat/fix: ai page improvements, bump, update ccusage

add more content on ai, add heatmap, fix header glow, add price to ai tools, fix NowPlaying style issue, new ccombine utility, better claude code usage page w/ model labels+better typing, bump, update ccusage (restore old dates)

app/ai/claude/components/PageHeader.tsx

@@ -0,0 +1,26 @@
+"use client"
+
+import Link from 'next/link'
+import { SiClaude } from 'react-icons/si'
+
+export default function PageHeader() {
+  return (
+    <>
+      <Link
+        href="/ai"
+        className="absolute top-4 left-4 text-gray-400 hover:text-gray-200 hover:underline transition-colors duration-200 z-10 px-2 py-1 text-sm sm:text-base"
+      >
+        ← Back to AI
+      </Link>
+
+      <div className="my-12 text-center">
+        <div className="flex justify-center mb-6">
+          <SiClaude size={60} />
+        </div>
+        <h1 className="text-4xl font-bold mb-2 text-gray-100 glow">Claude Code Usage</h1>
+        <p className="text-gray-400">How much I use Claude Code!</p>
+      </div>
+    </>
+  )
+}
+