feat: expand api snapshots and schema tooling

server/packages/universal-schema-gen/build.rs

@@ -0,0 +1,26 @@
+use std::{fs, path::Path};
+
+fn main() {
+    println!("cargo:rerun-if-changed=../universal-agent-schema/src/lib.rs");
+
+    let schema = schemars::schema_for!(sandbox_agent_universal_agent_schema::UniversalEvent);
+
+    let workspace_root = std::env::var("CARGO_MANIFEST_DIR")
+        .map(|dir| {
+            Path::new(&dir)
+                .parent()
+                .unwrap()
+                .parent()
+                .unwrap()
+                .parent()
+                .unwrap()
+                .to_path_buf()
+        })
+        .unwrap();
+    let out_dir = workspace_root.join("spec");
+    fs::create_dir_all(&out_dir).unwrap();
+
+    let json = serde_json::to_string_pretty(&schema).expect("Failed to serialize JSON schema");
+    fs::write(out_dir.join("universal-schema.json"), json)
+        .expect("Failed to write universal-schema.json");
+}