Captures the T-120 design decision: the typed argument schema travels
with each command (built-in modules and extension contributions both
register their own) rather than living in a central static map, which
would be blind to extension-contributed commands and fight the plugin
model (D-46). The dispatcher accumulates a cmd->schema registry and
validates req.args before invoking the handler. The T-104 git
validators stay as defense-in-depth because the git client is also
reachable directly from the UI. MCP tools/list generation deferred to
the T-130 track.
Co-Authored-By: Claude <noreply@anthropic.com>
jpmschweitzerandClaude
97c83b8fc9