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## 0.40.6

**`(fix):`** Import `serde::{Deserialize, Serialize}` directly in `environment.rs` for
multi-URL environments instead of relying on the crate prelude. The CLI
generator embeds the SDK and replaces `src/prelude.rs` with a bare
types-crate re-export, which dropped the serde derive macros and broke
compilation with `cannot find derive macro `Serialize` in this scope`.