chore(conductor): Add Test Suite Stabilization & Consolidation track

conductor/tracks/test_stabilization_20260302/spec.md

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+# Specification: Test Suite Stabilization & Consolidation (test_stabilization_20260302)
+
+## Overview
+The goal of this track is to stabilize and unify the project's test suite. This involves resolving pervasive `asyncio` lifecycle errors, consolidating redundant testing paradigms (specifically manual GUI subprocesses), ensuring artifact isolation in `./tests/artifacts/`, and implementing functional assertions for currently mocked-out tests.
+
+## Functional Requirements
+- **Asyncio Lifecycle Stabilization:**
+  - Resolve `RuntimeError: Event loop is closed` across the suite.
+  - Implement `ThreadPoolExecutor` for blocking calls in GUI-bound tests.
+  - Audit and fix fixture cleanup in `conftest.py`.
+- **Paradigm Consolidation (from testing_consolidation_20260302):**
+  - Refactor integration/visual tests to exclusively use the `live_gui` pytest fixture.
+  - Eliminate all manual `subprocess.Popen` calls to `gui_2.py` in the `tests/` and `simulation/` directories.
+- **Artifact Isolation & Discipline:**
+  - All test-generated files (temporary projects, mocks, sessions) MUST be isolated in `./tests/artifacts/`.
+  - Prevent leakage into `conductor/tracks/` or project root.
+- **Enhanced Test Reporting:**
+  - Implement structured, sectioned logging in `./tests/logs/` with timestamps.
+- **Assertion Implementation:**
+  - Replace `pytest.fail` placeholders with full functional implementation.
+- **Simulation Regression Fixes:**
+  - Debug and resolve `test_context_sim_live` entry count issues.
+
+## Acceptance Criteria
+- [ ] Full suite run completes without `RuntimeError: Event loop is closed` warnings.
+- [ ] No `subprocess.Popen` calls to `gui_2.py` exist in the test codebase.
+- [ ] All test artifacts are isolated in `./tests/artifacts/`.
+- [ ] All tests previously marked with `pytest.fail` now have passing functional assertions.
+- [ ] Simulation tests pass with correct entry counts.