fix(unhead): delay patching until hydration is complete #634
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Fixes issue where patches called before first render (e.g., in Vue's onMounted) were lost due to timing between patch and render. Changes: - Replace `_dirty` flag with cache invalidation via `delete entry._tags` - Defer client-side patches using `_pending` until next render cycle - Track `_originalInput` for SSR class side-effect pre-registration - Add streaming client parity for hydration tracking 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Fixes nuxt/nuxt#26272
The issue relates to patches called before the first render (e.g., in Vue's
onMounted) so the initial SSR is lost, meaning we can't track side effects.