Problem

Cluster 3 of the #2502 CSS class drift audit: upstream commit 21ac4b9a8a (style(ui) clarity pass, openclaw#53272) migrated .btn-sm → .btn--sm (BEM modifier convention). The fork's channels.nostr.ts still uses the old hyphen-sm variant.

Single-file, single-token rename.

Orphaned class reference (1)

Scope

• In: ui/src/ui/views/channels.nostr.ts:131 — change btn-sm to btn--sm in the class attribute.
• Out: Other drift clusters.

Acceptance criteria

• channels.nostr.ts:131 uses btn--sm instead of btn-sm
• Re-run node scripts/audit-css-class-drift.mjs — cluster 3 (21ac4b9) shows 0 orphans
• Manual verification in pnpm dev: nostr channel settings button renders with small-variant styling

References

• Parent audit: audit(ui): one-shot CSS class drift audit — surface fork-side references with no CSS definition #2502
• Upstream rename commit: 21ac4b9a8a (style(ui): continue ui clarity pass across theme, config, and usage openclaw/openclaw#53272)