chore(conductor): Add new track 'Expanded Test Coverage and Stress Testing'

conductor/tracks/test_coverage_expansion_20260309/spec.md

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+# Specification: Expanded Test Coverage and Stress Testing
+
+## Overview
+Add more unit, simulation, and integration tests to increase coverage and stress test the application. The primary focus will be on critical and complex paths rather than aggressive total coverage percentage. 
+
+## Functional Requirements
+- **Targeted Areas:**
+  - **MMA Agent 'Step Mode':** Ensure the step-by-step execution mode of the multi-agent architecture is thoroughly tested, including manual confirmation steps.
+  - **Tool Toggling and Access:** Verify that tools can be explicitly disabled/turned off and that tests confirm these tools are indeed inaccessible to the agents.
+  - **Multi-Epic/Advanced DAG Usage:** Stress test the Directed Acyclic Graph (DAG) execution engine by running scenarios with more than one concurrent epic/track and advanced task dependencies.
+- **Testing Types:**
+  - **Unit Tests:** For core logic regarding tool accessibility and state management.
+  - **Integration Tests:** To ensure agents, the DAG engine, and the execution pool interact correctly under stress.
+  - **Simulation Tests:** To run end-to-end automated UI workflows covering Step Mode operations and multi-epic management.
+
+## Non-Functional Requirements
+- **Targeted Coverage:** Prioritize regression prevention and covering previously untested edge cases in the specified areas over reaching a strict 80% global coverage metric.
+- **Stability:** All new tests must be stable, repeatable, and avoid introducing flakiness to the test suite.
+
+## Acceptance Criteria
+- [ ] Unit tests exist to verify that disabling a tool explicitly prevents agent access.
+- [ ] Simulation tests are in place to run an MMA agent workflow specifically in 'Step Mode', capturing necessary UI interactions.
+- [ ] Integration/simulation tests exist that load and execute multiple epics/tracks within the DAG engine simultaneously to stress the orchestrator.
+- [ ] The CI or local test suite passes reliably with the new tests included.
+
+## Out of Scope
+- Reaching >80% total code coverage across all modules indiscriminately.
+- Refactoring the core DAG or MMA execution logic (unless absolutely necessary to fix a bug discovered during testing).