repo-manager/docs/adr-005-owner-task-interfaces.md
tegwick 890f3b05b5 feat(handoffs): publish owner task interfaces
Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a023c0-a0a3-7c03-b395-5a0d2757214d
2026-08-22 14:15:48 +02:00

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---
id: RMGR-ADR-005
type: architecture-decision-record
title: "Owner-task interfaces for cross-repository adoption"
status: accepted
decided: "2026-08-22"
deciders: ["Bernd Worsch", "repo-manager"]
related:
- RMGR-WP-0010
- docs/owner-task-interface-contract_v1.md
- canon-work-record-types
---
# ADR-005: Owner-task interfaces for cross-repository adoption
## Status
**Accepted** (2026-08-22).
## Context
A producer can identify work that belongs in another repository before the
owner has created a task for it. Sending only a prose request makes the next
coding agent reconstruct the objective, inputs, constraints, and acceptance
criteria. Keeping a duplicate waiting task in the producer workplan then makes
two agents carry one todo.
The fleet work-record registry is deliberately closed. An interface offer must
therefore not become a new task-like lifecycle or a second backlog.
## Decision
1. A producer may publish an `OwnerTaskInterface`: a versioned, immutable
proposal containing the complete owner-ready objective, authoritative
inputs, deliverables, constraints, acceptance criteria, and verification.
2. The interface is not a work record. It has no assignee or lifecycle status
and does not replace the target owner's workplan/task/decision.
3. The target owner records `approved`, `amended`, or `rejected` in its own
authoritative work record. Approval cites the interface id and exact Git
revision. An amendment records the delta rather than silently changing the
imported meaning.
4. Once the producer publishes and routes a complete interface, its handoff
task is done. Adoption and implementation are tracked only in the target
owner's work record; the producer does not retain a duplicate todo.
5. Dependencies that still block producer-owned implementation remain normal
producer tasks. The interface pattern is only for work whose implementation
authority has crossed the repository boundary.
6. Interfaces contain no credentials, secret values, mutable environment
state, or copied authority. They reference authoritative contracts and
evidence by stable path/id and revision.
## Consequences
- Owners can approve and use the supplied task specification directly.
- Later agents do not need to recover intent from messages or re-plan the work.
- Owner amendments stay explicit and auditable.
- Work queues contain one implementation todo, in the repository that can
actually complete it.
- Messages become routing notifications; they are not the only copy of the
implementation contract.
## Rejected alternatives
- **Duplicate tasks in producer and consumer workplans.** They drift and need
manual closure coordination.
- **Prose-only messages.** They are useful routing evidence but too weak to be
an executable interface.
- **A new `handoff-task` work-record kind.** The existing task, intake, and
decision kinds already own lifecycle; adding another would create a parallel
backlog ontology.