Adds the canonical install location as the primary search path on Windows,
before falling back to GOPATH/bin. Updates the Claude config guidance message
to reference the new path.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Checks: workspace root, agent on PATH, status line helper, Claude settings, existing workspaces. Actionable fix guidance for each failure.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>