* [client] Support arbitrary UIDs in rootless image
* [client] Keep rootless executables root-owned
* [client] Harden arbitrary UID image validation
* [client] Preserve executable access in rootless image
Keep the binary and entrypoint executable when deployments override the runtime group. Retain root ownership so non-root users cannot modify either file.
* [client] Verify rootless state reuse with a stable UID
Persisted profiles remain scoped to the creating UID. Verify same-UID container recreation without broadening application permissions, and document the Kubernetes volume permission behavior observed on OpenShift. Remove unused synthetic-user home metadata.
* [client] Separate image changes from invoking user fix
Keep this PR limited to resolving unmapped non-root invoking users. Move container permissions and their smoke test to a dependent image branch so they can be reviewed separately.
* [client] Restore invoking process user test
Retain coverage for successful current-user lookup without sudo. Numeric-identity fallback tests do not cover this existing behavior.
Nicolas Frati
15a684248c