FALLBACK_UPGRADE_COMMAND = 'uv tool install -U deepagents-code'Generic upgrade hint used when install-method detection fails.
Callers that surface an upgrade command in user-facing text should prefer
upgrade_command(); this constant exists so those callers have something
to render when detection raises unexpectedly. The documented install path
is uv tool install (see scripts/install.sh), so the uv command is the
right display fallback. Uses uv tool install -U rather than uv tool upgrade for the same receipt-pin reason documented on _UPGRADE_COMMANDS:
showing a user the upgrade form would hand them a command that silently
stays on the old version for a pinned install. Execution paths still refuse
unrecognized installs instead of updating a separate environment.