Multi-tool handoff

Keep coordination, resume context, and delivered history in three root files so agents read only what the current action needs:

• KANBAN.md: bounded task state; read when selecting, assigning, moving, or finishing work.
• HANDOFF.md: current unfinished-work context; read only when resuming, transferring, pausing, or approaching a session limit.
• CHANGELOG.md: durable user-facing delivery history; write on completion and read only for releases or historical review.

Do not routinely load all three files. Do not create HAPPENING_NOW.md or another duplicate status file.

Use the bundled files

• Copy assets/kanban-template.md, assets/handoff-template.md, and assets/changelog-template.md when a file is missing.
• Read assets/example.md only when formatting guidance is needed.
• Read references/hook-setup.md when installing the usage guard for Claude Code, Codex, or Antigravity.

Maintain KANBAN.md

Use four columns: Backlog, To Do, In Progress, and Done. Agents move their own cards. Add agent, machine, worktree, and branch metadata only after moving a card to In Progress.