# TASK-156-03: Regression, Docs, And Closeout For Pair Roles

**Parent:** [TASK-156](./TASK-156_Guided_Pair_Role_Cardinality_And_Sibling_Part_Registration.md)
**Status:** ✅ Done
**Priority:** 🟠 High

## Objective

Close TASK-156 with role-cardinality docs, test coverage, and changelog history.

## Repository Touchpoints

- `_docs/_MCP_SERVER/README.md`
- `_docs/_PROMPTS/REFERENCE_GUIDED_CREATURE_BUILD.md`
- `_docs/_TASKS/README.md`
- `_docs/_CHANGELOG/README.md`
- `tests/e2e/integration/test_guided_surface_contract_parity.py`

## Acceptance Criteria

- docs explain singleton versus pair role semantics
- task board and descendant statuses are updated consistently
- changelog entry records the runtime behavior change

## Tests To Add/Update

- run focused unit role-cardinality tests
- run guided transport creature role-pair E2E where available

## Docs To Update

- `_docs/_MCP_SERVER/README.md`
- `_docs/_PROMPTS/REFERENCE_GUIDED_CREATURE_BUILD.md`
- `_docs/_PROMPTS/GUIDED_SESSION_START.md`
- `_docs/_TASKS/README.md`
- `_docs/_CHANGELOG/README.md`

## Changelog Impact

- add and index a dedicated TASK-156 changelog entry

## Status / Closeout Note

- close this leaf with the TASK-156 parent after task docs, board state,
  changelog, and transport/unit validation are updated in the same branch

## Completion Summary

- updated MCP/prompt docs, task board, descendant statuses, and changelog history
- focused unit validation passed for guided role cardinality and over-cardinality execution blocking
