Refine runtime selection and runner details

[ludfjig]

Summary

• Apply bulk selection to search matches while preserving other selections.
• Show runtime assignments in full-width detail rows for platforms with multiple hardware groups. Runner specifications follow selected measurements.
• Use solid MSHV lines and dashed KVM lines in charts and legends.
• Keep ignored Pages events outside the deployment queue.
• Document website previews and their lifecycle.

Validation

• TypeScript typecheck passed.
• Browser checks covered disclosure controls, filtered selection, reset behavior, and chart styles.
• git diff --check passed.

Benchmarks

Skip with benchmarks: skip. These UI, documentation, and Pages queue changes use existing benchmark data.