Chapter 21
Twin Mode
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Two isolated task lanes with overlap detection.
What it is
Twin Mode runs two related tracks (A/B) with isolation for Context Packs, providers, and Review/Stress state.
How it works
Independent lanes and worktrees where configured.
Conflict/overlap detection on files, schema, and migration directories.
Deterministic merge ordering and revalidation.
Mobile behavior
Twin A / Twin B switcher — not tiny side-by-side panes.
Important notes / limitations
Twin A authorization never leaks into Twin B.