feat(web): import oh-my-openagent-web Next.js + Cloudflare Workers site

Imports the public marketing site previously living in
../oh-my-opencode-web. Independent of the npm plugin: own package.json,
bun.lock, tsconfig.json. Not included in the published package — root
files: array still only ships dist/, bin/, postinstall.mjs.

Stack:
- Next.js 15.5 App Router + RSC, deployed to Cloudflare Workers via
  @opennextjs/cloudflare (build target .open-next/worker.js).
- Tailwind v4 + shadcn/ui primitives.
- next-intl with 4 locales (en/ja/ko/zh) under app/[locale]/.
- Playwright e2e tests under web/e2e/.
- Custom domains ohmyopenagent.com (primary) and ohmyopencode.org
  (legacy alias) declared in web/wrangler.toml.

Source files were re-formatted via `bun run format` to bring them in
line with the existing .prettierrc (singleQuote: false). Functional code
unchanged.

web/components/landing/motion-wrappers.tsx

@@ -0,0 +1,52 @@
+"use client"
+
+import { useRef, useEffect, useState } from "react"
+
+interface TerminalTypewriterProps {
+  text: string
+}
+
+export function TerminalTypewriter({ text }: TerminalTypewriterProps) {
+  const ref = useRef<HTMLSpanElement>(null)
+  const [isInView, setIsInView] = useState(false)
+  const [displayed, setDisplayed] = useState("")
+
+  useEffect(() => {
+    const element = ref.current
+    if (!element || isInView) return
+
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (!entry?.isIntersecting) return
+        setIsInView(true)
+        observer.disconnect()
+      },
+      { threshold: 0.1 },
+    )
+
+    observer.observe(element)
+
+    return () => observer.disconnect()
+  }, [isInView])
+
+  useEffect(() => {
+    if (!isInView) return
+    let i = 0
+    const interval = setInterval(() => {
+      if (i <= text.length) {
+        setDisplayed(text.slice(0, i))
+        i++
+      } else {
+        clearInterval(interval)
+      }
+    }, 40)
+    return () => clearInterval(interval)
+  }, [isInView, text])
+
+  return (
+    <span ref={ref} className="text-zinc-300">
+      {displayed}
+      {displayed.length < text.length && <span className="animate-pulse">_</span>}
+    </span>
+  )
+}