fixes tool callong

Cargo.toml

@@ -26,6 +26,17 @@ anyhow = "1"
 async-trait = "0.1"
 dotenvy = "0.15"
 
+# --- OpenAPI / Swagger UI ---------------------------------------------------
+# `utoipa` derives the OpenAPI document from the handlers/schemas;
+# `utoipa-swagger-ui` serves the browsable UI (and the raw JSON) from Axum.
+utoipa = { version = "5", features = ["axum_extras"] }
+utoipa-swagger-ui = { version = "8", features = ["axum"] }
+# Constrain `zip` for `utoipa-swagger-ui`'s build script (it embeds the UI from
+# a zip at compile time). The 8.1 build script targets the older 2.x API
+# (`zip::read::ZipFile` was not yet generic; `ZipError::InvalidArchive` took a
+# `&str`), which the 2.3+/2.6 line changed — pinning here keeps it building.
+zip = { version = ">=2.2.0, <2.3.0", default-features = false, features = ["deflate"] }
+
 # --- Optional HTTPS (see Config::tls_cert / tls_key) ------------------------
 # We pull these in with `default-features = false` because the crates are
 # already present as transitive deps of `reqwest` (rustls + ring), so enabling