feat(core): bootstrap packages/server and document extraction plan (#22492)

packages/server/src/openapi.ts

@@ -0,0 +1,14 @@
+import { api } from "./definition/api.js"
+import type { OpenApiSpec } from "./types.js"
+
+export function openapi(): OpenApiSpec {
+  return {
+    openapi: "3.1.1",
+    info: {
+      title: api.name,
+      version: "0.0.0",
+      description: "Contract-first server package scaffold.",
+    },
+    paths: {},
+  }
+}