style: final ruff formatting and lint fixes

Author: cemde

CHANGELOG.md

@@ -9,8 +9,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+**Tau2 Benchmark**
+
+- Implemented full support for Tau2 benchmark telecom domain, including `TelecomUserTools` and `TelecomUserModels` (PR: #TODO)
+- Added support for user-side tools in `Tau2Environment`, enabling dual-control scenarios (PR: #TODO)
+- Added usage examples and user-focused documentation for `Tau2Benchmark` (PR: #TODO)
+
+**Core**
+
+- Added `tools` support to `User` and `UserLLMSimulator`, allowing simulated users to execute tool calls (PR: #TODO)
+- Updated `UserLLMSimulator` prompt template to include tool instructions (PR: #TODO)
+
 ### Changed
 
+**Tau2 Benchmark**
+
+- Updated `Tau2Benchmark`, `Tau2Evaluator`, and `Tau2Environment` docstrings to remove internal implementation narratives and improve clarity (PR: #TODO)
+
 ### Fixed
 
 ### Removed