[Release] v0.2.1 (#243) (#244)

(cherry picked from commit 80d306ff54)

Co-authored-by: Yuge Zhang <Yuge.Zhang@microsoft.com>

docs/changelog.md

@@ -0,0 +1,106 @@
+# Changelog
+
+## Agent-lightning v0.2.1 (10/30/2025)
+
+Agent-lightning v0.2.1 is a stabilization release for v0.2.0. It introduces several bug fixes and new features, plus a number of unlisted CI improvements.
+
+### Bug fixes
+
+* Fix LiteLLM issues when restarting the proxy multiple times in the same process (#174 #206)
+* Fix LiteLLM model name selection when multiple servers use the same model (#197)
+* Fix store port conflict handling (#227)
+
+### New Features
+
+* Add trainer port option for client-server strategies (#198)
+
+### Documentation
+
+* Add tutorial for launching workers on separate machines (#213)
+* Add link to VERL framework (#210)
+* Add link to vLLM blog (#215)
+* Fix a couple of typos and avoid emacs backup files (#237)
+
+### New Contributors
+
+A warm welcome to our first-time contributors: @scott-vsi, @ddsfda99, @jeis4wpi 🎉
+
+**Full Changelog**: https://github.com/microsoft/agent-lightning/compare/v0.2.0...v0.2.1
+
+---
+
+## Agent-lightning v0.2.0 (10/22/2025)
+
+Agent-Lightning v0.2.0 introduces major framework improvements, new execution strategies, expanded documentation, and enhanced reliability across the agent training and deployment workflow. This release includes **78 pull requests** since v0.1.2.
+
+### Core Enhancements
+
+* **Lightning Store**: Added unified interface and implementation for Agent-lightning's core storage.
+* **Emitter**: Emitting any objects as spans to the store.
+* **Adapter** and **Tracer**: Adapting to OpenAI-like messages, and OpenTelemetry dummy tracer.
+* **LLM Proxy**: Added LLM Proxy as the first-class citizen in Agent-lightning.
+* **Agent Runner**: New version providing a more modular and robust runner design.
+* **Embedded Algorithms**: Algorithms are now embedded directly into trainers for simplicity.
+* **New Execution Strategies**: Introduced *Client-Server* and *Shared Memory* execution models.
+* **Trainer Updates**: Integrated v0.2 interfaces and FastAlgorithm validation.
+
+### Documentation & Examples
+
+* Revamped documentation with new guides for **agent creation**, **training**, **debugging**, and **store concepts**.
+* Improved quickstart tutorials, clarified installation and new deep-dive articles.
+* Added and updated examples: *SQL Agent*, *Calc-X*, *Local SFT*, *Search-R1*, and *APO algorithm*.
+
+### Developer Experience
+
+* Migrated build and CI pipelines to **1ES**, split workflows and aggregate badges for clarity.
+* Adopted **uv** as the dependency manager.
+* Added GPU-based pytest workflows for full test coverage.
+* Enhanced debugging UX, pre-commit configs, and linting (Pyright fixes, import sorting).
+
+### Ecosystem & Integrations
+
+* Added support for agents built with [**Agent-framework**](https://github.com/microsoft/agent-framework).
+* Added new community listings: [*DeepWerewolf*](https://github.com/af-74413592/DeepWerewolf) and [*AgentFlow*](https://agentflow.stanford.edu/).
+
+### New Contributors
+
+A warm welcome to our first-time contributors:
+@hzy46, @lunaqiu, @syeehyn, @linhx1999, @SiyunZhao, and @acured 🎉
+
+**Full changelog:** [v0.1.2 → v0.2.0](https://github.com/microsoft/agent-lightning/compare/v0.1.2...v0.2.0)
+
+---
+
+## Agent-lightning v0.1.2 (08/12/2025)
+
+### What's Changed
+* Add basic documentation in https://github.com/microsoft/agent-lightning/pull/33
+* RAG example by @wizardlancet in https://github.com/microsoft/agent-lightning/pull/21
+
+### New Contributors
+* @wizardlancet made their first contribution in https://github.com/microsoft/agent-lightning/pull/21
+
+**Full Changelog**: https://github.com/microsoft/agent-lightning/compare/v0.1.1...v0.1.2
+
+---
+
+## Agent-lightning v0.1.1 (08/06/2025)
+
+### What's Changed
+* Disable HTTP tracer tests and bump to 0.1.1 in https://github.com/microsoft/agent-lightning/pull/26
+* Fix trainer bugs in v0.1 in https://github.com/microsoft/agent-lightning/pull/24
+
+**Full Changelog**: https://github.com/microsoft/agent-lightning/compare/v0.1...v0.1.1
+
+---
+
+## Agent-lightning v0.1.0 (08/04/2025)
+
+The first release of Agent-lightning!
+
+- Turn your agent into an optimizable beast with **ZERO CODE CHANGE** (almost)! 💤
+- Build with **ANY** agent framework (LangChain, OpenAI Agent SDK, AutoGen, CrewAI, ...); or even WITHOUT agent framework (Python OpenAI). You name it! 🤖
+- **Selectively** optimize one or more agents in a multi-agent system. 🎯
+- Embraces Reinforcement Learning, Automatic Prompt Optimization and more **algorithms**. 🤗
+
+Install via `pip install agentlightning`.

mkdocs.yml

@@ -123,6 +123,8 @@ nav:
     - Trainer: reference/trainer.md
     - Types: reference/types.md
     - Internal: reference/internal.md
+  - Miscellaneous:
+    - Changelog: changelog.md
 
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