Addresses two cursor review findings:
- {#each} bodies whose bound values appear in attributes (href={link.href},
src={item.img}) now record attr slots; the browser hydrates them from the
rendered attribute so component previews no longer mount with empty links.
Single-expression attributes hydrate exactly; mixed values stay unhydrated
as before. A new slot classifier also refuses shapes that would crash a
shallow hydration item (deep paths, method calls, bare item renders) and
routes them to source-preview mode instead.
- Style directives now run the mixed loop/outer identifier check before the
free-identifier param check, so style:width={base + r.pct} falls back
instead of minting a broken param.
Tests: attr-slot analysis units, crashy/lossy fallback units, an attribute-
bound anchor in the stateful SvelteKit fixture asserted through accept, and
a mountedDomProbe e2e hook that reads the hydrated href off the mounted
variant DOM (verified to fail when hydration is disabled).
AI-assisted (Claude Code).
Co-Authored-By: Claude Code <noreply@anthropic.com>
Paul BakausandClaude Code
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