Closes#20328.
## Summary
- Adds a CLI-side check that warns when `twenty-app-dev` is older than
the latest published Docker Hub tag.
- Reads `APP_VERSION` from the running container via `docker inspect` —
no server endpoint, no version exposed publicly. (`APP_VERSION` is
already baked in by `packages/twenty-docker/twenty/Dockerfile` for both
`twenty` and `twenty-app-dev` targets.)
- Fetches latest semver tag from Docker Hub (same API the admin panel
already uses) and caches the result for 24h in
`~/.twenty/version-check-cache.json`.
- Wired into `twenty dev`, `twenty install`, and `twenty server start`.
- Best-effort: silent on container-missing / docker / network errors,
never blocks a command.
## Why CLI-side instead of a `/healthz` extension
The original issue suggested comparing the running server version
against Docker Hub. Exposing the running version on a public endpoint
has a small but real security cost (helps attackers fingerprint
vulnerable deployments), and the version is already inside the image —
so the CLI can read it directly without ever calling the server.
## Test plan
- [x] `nx run twenty-sdk:test` — added unit tests for `parseSemver` /
`compareSemver`
- [x] `nx run twenty-sdk:typecheck`
- [x] `nx run twenty-sdk:lint`
- [ ] Manual: with an old `twenty-app-dev` image running, run `yarn
twenty install` → see warning
- [ ] Manual: with an up-to-date image, run `yarn twenty dev` → no
warning, cache file written
- [ ] Manual: no container at all → no warning, no error
