giles 36b070f796 Add reactive spreads — signal-driven attribute injection in islands ...

When a spread value (e.g. from ~cssx/tw) appears inside an island with
signal-dependent tokens, reactive-spread tracks deps and updates the
element's class/attrs when signals change. Old classes are surgically
removed, new ones appended, and freshly collected CSS rules are flushed
to the live stylesheet. Multiple reactive spreads on one element are safe.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-13 05:16:13 +00:00

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