[kquinsland01]

The UI and controller can listen on IPv6 while its chart-managed Service remains IPv4-only because the Helm chart does not expose Service IP-family settings.

This is a simple PR to add an optional ipFamilyPolicy and ordered ipFamilies values independently under ui.service and controller.service.

Empty defaults omit both fields, preserving Kubernetes defaulting and the chart's existing rendered output.

This also has a bit of documentation explaining how to use any of the three possible configurations: IPv4-only, IPv6-only and dual-stack usage.

Validation:

• Full Helm suite: 373 tests across 32 suites pass with the CI Helm version, 3.18.0.
• Focused Service suites: 41 tests pass, including default omission, both single-stack families, both dual-stack orders, independent components and independently optional fields.
• helm lint helm/kagent passes.
• Full default chart rendering is byte-identical to the unmodified base.
• Eight explicitly configured Service renders pass strict Kubernetes schema validation.
• git diff --check passes.