feat: initial test static site with Deno backend

pages/api/hello.ts

@@ -0,0 +1,14 @@
+// GET /api/hello — returns a greeting.
+// Demonstrates reading query parameters and using env vars.
+export async function API_get(req: Request): Promise<Response> {
+  const url = new URL(req.url);
+  const name = url.searchParams.get("name") || "World";
+
+  // Example: reading a secret from environment (configured in Docker Watcher).
+  const prefix = Deno.env.get("GREETING_PREFIX") || "Hello";
+
+  return Response.json({
+    message: `${prefix}, ${name}!`,
+    served_by: "Deno on Docker Watcher",
+  });
+}