indifferentketchup b29555ee28 batch3 T6: usePanes hook + Shiki integration in CodeBlock ...

- hooks/usePanes: per-session panes CRUD; debounced (300ms) state PATCH;
  immediate position-change PATCH with refresh
- CodeBlock: shiki async highlighting via codeToHtml + github-dark theme;
  LANG_MAP for ts/tsx/js/jsx/py/go/rs/rb/java/c/cpp/cs/php/sh/yaml/json/
  toml/md/sql/dockerfile/html/css; falls back to plain pre on unknown lang
  or async failure
- package.json: + shiki

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-15 15:32:04 +00:00

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