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/app/api/npm-downloads/route.ts

@@ -0,0 +1,85 @@
+import { NextResponse } from "next/server"
+import { getStats } from "@/lib/stats"
+
+/**
+ * Shields.io endpoint badge for combined NPM downloads.
+ * Usage: https://img.shields.io/endpoint?url=https://ohmyopenagent.com/api/npm-downloads
+ *
+ * Combines downloads from both oh-my-opencode and oh-my-openagent packages.
+ */
+
+function formatDownloads(num: number): string {
+  if (num >= 1_000_000) {
+    const formatted = (num / 1_000_000).toFixed(1)
+    return `${formatted.replace(/\.0$/, "")}M`
+  }
+  if (num >= 1_000) {
+    const formatted = (num / 1_000).toFixed(1)
+    return `${formatted.replace(/\.0$/, "")}k`
+  }
+  return String(num)
+}
+
+export async function GET(request: Request) {
+  const { searchParams } = new URL(request.url)
+  const period = searchParams.get("period") ?? "total"
+
+  try {
+    const stats = await getStats()
+
+    let value: number
+    let label: string
+
+    switch (period) {
+      case "monthly":
+        value = stats.monthlyDownloads
+        label = "npm downloads/month"
+        break
+      case "weekly":
+        value = stats.weeklyDownloads
+        label = "npm downloads/week"
+        break
+      case "total":
+      default:
+        value = stats.totalDownloads
+        label = "npm downloads"
+        break
+    }
+
+    // Shields.io endpoint badge schema
+    // https://shields.io/badges/endpoint-badge
+    const badge = {
+      schemaVersion: 1,
+      label,
+      message: formatDownloads(value),
+      color: "ff6b35",
+      labelColor: "000000",
+      style: "flat-square",
+    }
+
+    return NextResponse.json(badge, {
+      headers: {
+        "Cache-Control": "public, s-maxage=3600, stale-while-revalidate=86400",
+        "Access-Control-Allow-Origin": "*",
+      },
+    })
+  } catch {
+    // Fallback badge
+    return NextResponse.json(
+      {
+        schemaVersion: 1,
+        label: "npm downloads",
+        message: "1M+",
+        color: "ff6b35",
+        labelColor: "000000",
+        style: "flat-square",
+      },
+      {
+        headers: {
+          "Cache-Control": "public, s-maxage=300, stale-while-revalidate=3600",
+          "Access-Control-Allow-Origin": "*",
+        },
+      },
+    )
+  }
+}

web/app/api/stats/route.ts

@@ -0,0 +1,31 @@
+import { NextResponse } from "next/server"
+import { getStats, formatStats } from "@/lib/stats"
+
+const FALLBACK = {
+  stars: "37.3k",
+  totalDownloads: "1M+",
+  monthlyDownloads: "580k+",
+  weeklyDownloads: "90k+",
+}
+
+export async function GET() {
+  try {
+    const stats = await getStats()
+    const formatted = formatStats(stats)
+
+    return NextResponse.json(
+      { ...formatted, raw: stats },
+      {
+        headers: {
+          "Cache-Control": "public, s-maxage=3600, stale-while-revalidate=86400",
+        },
+      },
+    )
+  } catch {
+    return NextResponse.json(FALLBACK, {
+      headers: {
+        "Cache-Control": "public, s-maxage=300, stale-while-revalidate=3600",
+      },
+    })
+  }
+}