orca/docs/split-groups-rollout-pr2.md

Split Groups PR 2: Terminal Lifecycle Hardening

This branch lands the terminal ownership and remount safety work required before split groups can be exposed.

Scope:

• preserve PTYs across remounts
• fix pending-spawn dedupe paths
• fix split-pane PTY ownership
• keep visible-but-unfocused panes rendering correctly

What Is Actually Hooked Up In This PR:

• the existing terminal path uses the new PTY attach/detach/remount behavior
• split panes inside a terminal tab get distinct PTY ownership
• visible terminal panes continue rendering even when another pane or group has focus

What Is Not Hooked Up Yet:

• no split-group layout is rendered
• Terminal.tsx still uses the legacy single-surface host path
• no worktree restore/activation changes land here

Non-goals:

• no split-group UI rollout
• no worktree activation fallback changes