Summary

This PR clarifies the --filter flag documentation and ships related UI polish for 3D charts, plus a fix for embedded UI sync verification.

--filter flag description

Updates the --filter / -f flag description across CLI help, docs, and the GitHub Action so it matches actual behavior:

• CSV/JSON: filters rows by the joined --group label
• Benchmark parsers: filters by benchmark/task name

Replaces the previous wording ("data labels / series names"), which implied column/series filtering for tabular data.

New description:

Regex to include only matching rows (CSV/JSON: --group label) or benchmark names

Files:

• cmd/cli/options.go
• docs/src/content/docs/commands/root.mdx
• docs/src/content/docs/commands/charts.mdx
• docs/src/content/docs/ci-cd/github-action.mdx
• docs/src/content/docs/features.mdx
• action.yml

3D chart UI

Fixes grid3D.axisPointer styling so hover crosshairs are visible in both themes (ECharts GL defaults to near-black lines/labels).

• Pointer lines: use theme axisColor at full opacity (width: 2)
• Pointer labels: use theme textColor instead of ECharts GL’s default white label text
• Grid split lines: softened globally (opacity dark 0.15, light 0.4) with an extra ×0.75 fade in 3D grids so the box reads less bright while the pointer stays readable

Files:

• ui/src/composables/charts/shared/3d.ts
• ui/src/composables/charts/shared/chartConfig.ts
• ui/src/composables/charts/shared/3d.test.ts
• pkg/template/vizb-ui.gen.go (regenerated embedded UI assets)

vizb-ui.gen.go sync test fix

verify-gen-sync.test.ts previously hardcoded a Vite chunk hash (e.g. axisAlignTicks-lwmJPqWv). That broke whenever the UI was rebuilt and chunk names changed.

• Extracted gen.go parsing/compare logic into ui/embed-build/gen-go-parse.ts
• Slimmed verify-gen-sync.ts to a CLI wrapper around the shared module
• Tests now sample any chunk from VizbChunks at runtime and locate lines by key (handles padded alignment in generated Go)

This keeps sync verification stable across UI rebuilds without manually updating chunk hashes in tests.