Fix unused import warning

[RAprogramm]

Summary

• remove the unused String import in the response details module to satisfy -D warnings
• bump the crate version to 0.23.2 and record the change in the changelog

Testing

• cargo +nightly fmt --
• cargo +1.90.0 clippy -- -D warnings
• cargo +1.90.0 build --all-targets
• cargo +1.90.0 test --all
• cargo +1.90.0 doc --no-deps
• cargo +1.90.0 audit
• cargo +1.90.0 deny check

---

https://chatgpt.com/codex/tasks/task_e_68d6534965a8832b81250b9b3b903b82

[chatgpt-codex-connector]

💡 Codex Review

masterror/src/response/details.rs

Lines 10 to 16 in 8ba7832

	#[cfg(not(feature = "serde_json"))]
	impl ErrorResponse {
	/// Attach plain-text details (available when `serde_json` is disabled).
	#[must_use]
	pub fn with_details_text(mut self, details: impl Into<String>) -> Self {
	self.details = Some(details.into());
	self

[P1] Restore alloc::String import for no_std builds

Removing the use alloc::string::String declaration leaves with_details_text referring to String without bringing it into scope when std is disabled. In default-features = false builds, String is not part of the prelude, so this method now fails to compile even though the crate is advertised as no_std compatible. Consider re‑adding the import (gated behind #[cfg(not(feature = "std"))]) or qualifying the type as alloc::string::String to keep no_std builds working while still avoiding the unused‑import warning.

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