v0.4.0

Changed:

• Run MCP tool subprocesses in a worker thread to avoid blocking the async server

Added:

• Set the PYCLI_MCP_USER_AGENT environment variable from the per-request HTTP User-Agent when running commands

Fixed:

• Fix support for recent Typer releases, including Typer-injected completion options, tuple-valued parameters, Path parameters with strict type checking, and command objects returned by typer.main.get_command()
• Fix argparse usage extraction on Python 3.14 by disabling colored terminal output while formatting usage