story-kit: create 170_story_add_test_first_requirements_to_agent_role_descriptions

.story_kit/work/1_upcoming/170_story_add_test_first_requirements_to_agent_role_descriptions.md

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+---
+name: "Add test-first requirements to agent role descriptions"
+---
+
+# Story 170: Add test-first requirements to agent role descriptions
+
+## User Story
+
+As a project owner, I want agent role descriptions to explicitly require test-first development and record_tests usage, so that agents follow the documented dev process.
+
+## Acceptance Criteria
+
+- [ ] Coder agent roles in project.toml mention writing tests for each acceptance criterion
+- [ ] Coder agent roles mention calling record_tests MCP tool before completing work
+- [ ] QA agent role mentions verifying that record_tests was called and results are present
+- [ ] Mergemaster role mentions checking ensure_acceptance before merging
+
+## Out of Scope
+
+- TBD