Change tasks

A change task describes one change to the product. Its work is on a branch in each repository, and the branch is merged. Each task is one file in tasks/, and it stays there with its last status.

intake writes the file. probe settles what is open in it. build does the work.

#The fields

---
id: T-012
status: draft
milestone: Offline
exploration: E-002
repos: [acme]
depends_on: [T-009]
decisions: [3]
pull_requests: []
provider:
---

Field	It gives
`id`	The number of the task
`status`	Where the task is. See Statuses.
`milestone`	The milestone of the task
`exploration`	The exploration that the task came from
`repos`	The repositories that the task changes
`depends_on`	The tasks that must be `done` first
`decisions`	The numbers of the decisions that apply. A task gives the number, not the text.
`pull_requests`	The URL of each pull request. `build` writes them.
`provider`	An optional model for the session, for example `claude/opus`

#The sections

Section	It holds	Who writes it
`## Goal`	What changes in the product, in plain words	`intake`
`## Acceptance criteria`	One check on each line	`intake`, `probe`
`## Out of scope`	What this task does not do	`intake`, `probe`
`## Context changes`	Facts that a future task must know	`build`, `probe`
`## Deployment requirements`	What you do to deploy: variables, secrets, migrations	`build`
`## Questions`	Each open question, and its answer	`probe`, `build`, `triage`
`## Discovered work`	Other work that the build saw, and did not do	`build`
`## Evidence`	What the build ran, and what it decided	`build`
`## Rework`	The changes to make after a review	`triage`
`## Review`, `## Promoted`	The result of `accept`	`accept`

#A decision that a build cannot make

A build runs with no person, so it has a rule for a decision that the task does not give.

If the decision changes what the product does for its users or for other systems, or changes stored data, the build stops and writes the question. The status becomes blocked.
If the decision changes only how the code is written, the build makes the decision, and writes the reason under ## Evidence.