gabrielmaialva33/winx-code-agent

v0.2.304 Feature

This release adds 1 notable feature for engineering teams evaluating rollout.

Published 11d AI & Machine Learning

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Topics

autonomous code-agent computer control execution llm-agent

+8 more

llm-code mcp rust serena shell vibe-coding vibecoding wcgw

ReleasePort's take

Light signal

editorial:auto 11d

The release rewrites the PTY implementation to fix a deadlock and corrects several shell‑related bugs, improving reliability.

Why it matters: Fixes SIGTTOU deadlock in PtyShell, restores stripped tail/head pipes in BashCommand deserialization, removes ghost entries from BackgroundShellManager, and synchronizes cwd after cd commands; all critical for stable automation workflows.

Summary

AI summary

Full PTY rewrite fixes SIGTTOU deadlock, tail/head stripping bug, background-shell ghosts, and cwd desync.

Changes in this release

Type	Severity	Summary	CVE
Bugfix
Bugfix	Medium	Fixed `BashCommand` JSON deserializer stripping `\| tail …` / `\| head …` from commands. Fixed `BashCommand` JSON deserializer stripping `\| tail …` / `\| head …` from commands. Source: llm_adapter@2026-05-23 Confidence: high	—
Bugfix	Medium	Pruned finished/dead shells from `BackgroundShellManager` to remove ghost entries. Pruned finished/dead shells from `BackgroundShellManager` to remove ghost entries. Source: llm_adapter@2026-05-23 Confidence: high	—
Bugfix	Medium	Synchronized current working directory in status block after `cd` commands. Synchronized current working directory in status block after `cd` commands. Source: llm_adapter@2026-05-23 Confidence: high	—
Bugfix	Medium	Fixed SIGTTOU/`tcsetpgrp()` deadlock that suspended the MCP client. Fixed SIGTTOU/`tcsetpgrp()` deadlock that suspended the MCP client. Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Bugfix	Medium	Resolved `status_check` hangs caused by blocking pipe reads. Resolved `status_check` hangs caused by blocking pipe reads. Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Refactor	Medium	Replaced broken `bash -i` + `Stdio::piped()` shell with a real PTY (via `portable-pty`). Replaced broken `bash -i` + `Stdio::piped()` shell with a real PTY (via `portable-pty`). Source: llm_adapter@2026-05-23 Confidence: low	—

Full changelog

✨ Highlights

This release brings a full PTY rewrite and three fixes uncovered by extreme tests.

PtyShell migration (from v0.2.302)

Replaced the broken bash -i + Stdio::piped() shell with a real PTY (via portable-pty). Eliminates the SIGTTOU/tcsetpgrp() deadlock that suspended the MCP client and fixes status_check hangs caused by blocking pipe reads.

Bug fixes in this release

tail/head stripping — the BashCommand JSON deserializer was stripping | tail … / | head … from incoming commands, so seq 1 10000 | tail -5 was effectively running seq 1 10000 and the response carried ~499 lines instead of the requested 5. Fixed.
Background-shell ghosts — BackgroundShellManager kept entries for shells whose underlying bash had already exited. PtyShell now retains the spawned Child and exposes a real is_alive() via try_wait(); finished/dead shells are pruned before listing.
cwd desync — cd /tmp updated bash's PWD but the status block kept reporting the workspace root. wait_for_output now parses the trailing prompt ◉ <path>──➤ and persists the new cwd back into BashState.

Regression tests

tests/bash_pty_regression_test.rs covers tail -N direct + via JSON, bg pruning after exit, and cd syncing status + persisted state.

Install

cargo install winx-code-agent

Configure MCP

Drop this in .mcp.json at your project root:

{
  "mcpServers": {
    "winx": {
      "command": "winx-code-agent",
      "env": { "RUST_LOG": "winx_code_agent=info" }
    }
  }
}

Full Changelog: https://github.com/gabrielmaialva33/winx-code-agent/compare/v0.2.302...v0.2.304

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About gabrielmaialva33/winx-code-agent

A high-performance Rust reimplementation of WCGW for code agents, providing shell execution and advanced file management capabilities for LLMs via MCP.

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