tenx 0.27.2 — fix `tenx update` for uv tool installs

Patch release. Found by dogfooding the self-update path on a real machine.

uv tool list reports the distribution name (tenx-cli) while the console scripts it exposes are tenx and 10x. tenx update ran uv tool upgrade tenx, so uv answered:

`tenx` is not installed; run `uv tool install tenx` to install

and the update exited 1. Every uv-tool user hit this on every version; the earlier update-channel fixes only exercised the --check path, never the upgrade path.

Upgrades now resolve the name uv actually tracks. Pinned by four checks including the negative case, so an unrelated uv tool is never claimed.

Upgrade with tenx update.