* skills: prefer agent-first worktree launch; avoid empty shell tabs
Document Orca's first-terminal behavior so agents do not leave dead
shell tabs: --agent runs in the first terminal (one tab), bare
worktree create + terminal create leaves shell + agent (two tabs).
Also: re-resolve live handles via terminal list after create, message
one handle only, and prefer orchestration check --inject over terminal
send for pure orchestration pings. Aligns with CLI docs
(--agent launches the selected agent in the first terminal).
* fix skill guidance for agent-first worktrees
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Co-authored-by: Jinjing <6427696+AmethystLiang@users.noreply.github.com>
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