Add a Claude Code SessionStart hook (matcher: startup) that runs
`corepack yarn install` when node_modules is missing, so worktrees Claude
creates internally are immediately usable. Also extend create-task-worktree.sh
to install deps after the worktree is created, covering Codex/Cursor/manual
flows that share that script.
Mirrors .cursor and .codex structure with Claude model assignments:
- haiku for lighter tasks (translator, browser-check, profiler)
- sonnet for standard tasks (code-quality, plan-implementer, etc.)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Tommaso Casaburi