mcp-cli cmd fails with "Unknown command: cmd" #226

Description

mcp-cli cmd is registered as a typer subcommand (@app.command("cmd") in main.py:1491), but fails at runtime with:

✗ Unknown command: cmd

Steps to Reproduce

mcp-cli cmd --server myserver --tool my_tool --tool-args '{"prompt": "Hello"}'

Note: mcp-cli cmd --help works fine (handled by typer before the command body executes).

Root Cause

Inside cmd_command, the function calls cli_execute("cmd", ...) (main.py:1569), which looks up "cmd" in UnifiedCommandRegistry:

# cli.py:187-190
command = cmd_registry.get(command_name, mode=CommandMode.CLI)
if not command:
    output.error(f"Unknown command: {command_name}")
    return False

The "cmd" command is registered in typer but not in the UnifiedCommandRegistry for CommandMode.CLI, so registry.get("cmd", mode=CommandMode.CLI) returns None.

In main.py:782-789, the code checks if "cmd" exists in the registry but doesn't actually register it — it only logs that it was found:

core_commands = ["cmd", "ping"]
for command_name in core_commands:
    cmd = registry.get(command_name, mode=CommandMode.CLI)
    if cmd:
        registry_registered.append(command_name)

Environment

• mcp-cli version: 0.16
• Python: 3.12
• OS: macOS