* feat(mods): add ui.render, $.ui.resolve and $.ui.invalidate to the runtime
The first stage of terminal rendering (#13749): the worker raises
ui.render for a site the host offers in its load request, and judges each
hook's tree with Claude Code 2.1.310's rules for Box and Text. Mods get
$.ui.resolve's frozen element table, the h and Fragment globals, and
$.ui.invalidate, which reaches the host after the dispatch that called it.
No host offers a site yet, so ui.render hooks are still skipped and
listed at startup.
The design for the whole stage is in
docs/design/2026-10-26-mod-terminal-render.md.
* fix(mods): keep render text cuts, notes and h children aligned with Claude Code
- Cut text past the cap before a high surrogate, so the adjusted tree never
holds a lone surrogate the validator refuses, and report the characters
actually drawn.
- Say each kind of adjustment (border style, text cut) once per load and
site, so a text cut whose length changes on every render is told once.
- Hand a function component its children flattened, always an array, as
Claude Code's h does.
- Freeze ENGINE_NODE, and document Claude Code's invalidate backoff for the
Ink scheduling step.
qqqys
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