feat: unify onboarding + config schema

src/config/schema.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, it } from "vitest";
+
+import { buildConfigSchema } from "./schema.js";
+
+describe("config schema", () => {
+  it("exports schema + hints", () => {
+    const res = buildConfigSchema();
+    const schema = res.schema as { properties?: Record<string, unknown> };
+    expect(schema.properties?.gateway).toBeTruthy();
+    expect(schema.properties?.agent).toBeTruthy();
+    expect(res.uiHints.gateway?.label).toBe("Gateway");
+    expect(res.uiHints["gateway.auth.token"]?.sensitive).toBe(true);
+    expect(res.version).toBeTruthy();
+    expect(res.generatedAt).toBeTruthy();
+  });
+});