# Concelier Merge Tests Charter

## Mission
Validate merge behavior, precedence, identity, and determinism for the Concelier merge engine.

## Responsibilities
- Keep tests deterministic with fixed time/ID fixtures and stable ordering.
- Cover merge precedence, identity resolution, hash calculation, and backport evidence flows.
- Avoid network access; use in-memory or fixture-driven inputs only.
- Track work on `TASKS.md` and update statuses (TODO/DOING/DONE/BLOCKED/REVIEW).

## Key Paths
- `StellaOps.Concelier.Merge.Tests.csproj`
- `AdvisoryMergeServiceTests.cs`
- `AdvisoryPrecedenceMergerTests.cs`
- `AliasGraphResolverTests.cs`
- `MergeEventWriterTests.cs`

## Required Reading
- `docs/modules/concelier/architecture.md`
- `docs/modules/platform/architecture-overview.md`

## Working Agreement
- 1. Update task status to `DOING`/`DONE` in both corresponding sprint file `/docs/implplan/SPRINT_*.md` and the local `TASKS.md` when you start or finish work.
- 2. Review this charter and the Required Reading documents before coding; confirm prerequisites are met.
- 3. Keep changes deterministic (stable ordering, timestamps, hashes) and align with offline/air-gap expectations.
- 4. Coordinate doc updates, tests, and cross-guild communication whenever contracts or workflows change.
- 5. Revert to `TODO` if you pause the task without shipping changes; leave notes in commit/PR descriptions for context.