# Changelog

All notable changes to Nanocodex are documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [0.3.0](https://github.com/gakonst/nanocodex/releases/tag/v0.3.0) - 2026-07-28

### Bug Fixes

- [ci] Satisfy strict Clippy checks
- [wasm] Satisfy target-specific lint gates
- [agent] Fail malformed continuations before terminal
- [agent] Remove rollout writer locking
- [agent] Align retained context with Codex

### Documentation

- Finalize the PR 50 public API guide

### Features

- Stabilize observability and USD cost

### Miscellaneous Tasks

- [release] Prepare 0.3.0

### Other

- Merge pull request [#50](https://github.com/gakonst/nanocodex/issues/50) from gakonst/refactor/05-observability

### Refactor

- [api] Stabilize Tower and lifecycle boundaries
- [oai] Contain agent-only session internals
- [agent] Decompose model lifecycle
- [agent] Decompose driver control
- [agent] Decompose rollout persistence
- Align agent lifecycle with Codex
- Isolate platform runtime boundaries
- Stabilize public SDK surface
- Extract owned agent lifecycle

### Testing

- [observability] Isolate tracing capture
- [agent] Expect stable response item ids
- [observability] Verify full-fidelity turn traces

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