refactor(protocol): extract server contracts (#33708)

packages/schema/test/compatibility.test.ts

@@ -0,0 +1,10 @@
+import { describe, expect, test } from "bun:test"
+import { FileSystem } from "../src/filesystem"
+
+describe("schema compatibility", () => {
+  test("moved class schemas remain constructible", () => {
+    const input = new FileSystem.FindInput({ query: "src" })
+    expect(input).toBeInstanceOf(FileSystem.FindInput)
+    expect(input.query).toBe("src")
+  })
+})