chore: release v0.4.0

[riatzukiza]

Release v0.4.0

• Source PR: Align session fork ids with prompt cache hints #59
• Hotfix: false

Release notes

Summary

Significant refactor and feature expansion across internal modules (notably modularizing request handling, enhanced prompts/logging, and broader configuration/flow changes). These are substantial architectural changes that expand capabilities while aiming to remain backward-compatible from a consumer perspective, characteristic of a minor bump in a 0.x.y release.

Release Type

• MINOR (auto-detected)

Highlights

• Large refactor of lib/request/request-transformer.ts and modularized request handling
• Addition of new tooling/prompts integration and configuration pathways
• Extensive test updates and coverage improvements
• CI/workflow configuration changes
• Expanded Codex/OpenCode flow features and state management

Breaking Changes

• Potential internal API/module restructuring (e.g., replacement/removal of internal request transformer module) that could affect downstream code relying on internal paths; public API surface appears to remain conceptually stable, but users should verify integration points during upgrade

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch release/v0.4.0-20251120231957

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