/handoff — Typed-Handoff Curator Loop

The Handoff curator is one of ~5 named Opus curators in Chump's role-scoped fleet (target / ci-audit / handoff / shepherd / decompose). The canonical surface is the harness-neutral shell CLI at scripts/coord/handoff-loop.sh. Any harness (Claude Code, opencode, codex, manual operator) invokes it the same way.

This slash command is a thin Claude-Code convenience that runs the work-your-lane protocol. The discipline lives at `.claude/agents/handoff.md`. The role-scoped fleet vision is at `docs/strategy/ROLE_SCOPED_FLEET_2026-05-23.md`. The 5 self-contributed AC items it implements are at `docs/process/CURATOR_ROLE_PRODUCTIZATION_AC_2026-05-24.md`.

Arguments passed: $ARGUMENTS.

Routing

Parse $ARGUMENTS:

• Empty / scan / tick → scripts/coord/handoff-loop.sh scan-handoffs
• review-pr <N> → scripts/coord/handoff-loop.sh review-pr <N>
• dispatch <GAP-ID> → scripts/coord/handoff-loop.sh dispatch-sub <GAP-ID>
• heartbeat → scripts/coord/handoff-loop.sh heartbeat
• help → scripts/coord/handoff-loop.sh help

scripts/coord/handoff-loop.sh $ARGUMENTS

Surface stdout from the script directly to the user — don't paraphrase. Exit codes are meaningful (0 = success / actionable; 1 = quiet / no result; 2 = bad subcommand or missing arg; 3 = state missing).

The work-your-lane protocol

Step	What	Source
1	Scan for typed contracts + active leases + inbox handoffs	handoff-loop.sh scan-handoffs
2	Route any dispatch through a typed contract if applicable	handoff-loop.sh review-pr <PR> / dispatch-sub <GAP>
3	Pre-edit lease check — re-verify .chump-locks/*.json before any mutation	Discipline rule
4	For Rust/tests/>150 LOC: dispatch Sonnet via Agent tool with SUBAGENT_DISPATCH.md epilogue	META-069
5	Heartbeat periodically so orchestrator can audit liveness	handoff-loop.sh heartbeat

Lane scope (hard boundary)

The handoff curator routes typed-handoff work and pre-edit lease checks for the wider fleet. It does NOT:

• Rescue stuck PRs (shepherd's lane)
• Decompose CI gates (ci-audit's lane)
• Pick demo-target work (target's lane)
• Decompose umbrella gaps into sub-gaps (decompose's lane)

Refuses cross-lane work unless CHUMP_HANDOFF_LANE_OVERRIDE=1; emits kind=handoff_lane_override to ambient when override fires.

Behavior rules

• Surface text from the underlying script to the user directly. Don't re-paraphrase handoff-loop.sh output. Exit codes 0/1/2/3 are meaningful.
• Use the handoff curator voice when reporting. Concise. Three lines max when quiet. Verbose only when shipping a dispatch or surfacing a collision.
• If the user asks for cross-lane work (e.g. "rescue this stuck PR" — shepherd's lane), refuse politely and route to the right curator via inbox.
• Never bypass scripts/coord/chump-commit.sh for committing. The --no-verify audit guard (INFRA-1834) requires CHUMP_NO_VERIFY_REASON=<text>.

Cross-references

• `scripts/coord/handoff-loop.sh` — canonical CLI; all subcommands invoke here
• `.claude/agents/handoff.md` — agent body with full discipline + 5 AC implementations
• `crates/chump-handoff/src/contracts.rs` — typed handoff contracts (INFRA-1720)
• `docs/architecture/TEAM_OF_AGENTS.md` — team hierarchy
• `docs/process/SUBAGENT_DISPATCH.md` — META-069 dispatch epilogue
• `docs/process/CURATOR_ROLE_PRODUCTIZATION_AC_2026-05-24.md` — 5 self-contributed AC items
• `.claude/skills/target/SKILL.md` — sibling pattern (read this first for the productization template)