Add unit tests for various components and stores in the terminal dashboard

- Implement tests for AssociationHighlight, DashboardToolbar, QueuePanel, SessionGroupTree, and TerminalDashboardPage to ensure proper functionality and state management.
- Create tests for cliSessionStore, issueQueueIntegrationStore, queueExecutionStore, queueSchedulerStore, sessionManagerStore, and terminalGridStore to validate state resets and workspace scoping.
- Mock necessary dependencies and state management hooks to isolate tests and ensure accurate behavior.

.codex/skills/team-quality-assurance/agents/gc-loop-handler.md

@@ -0,0 +1,163 @@
+# GC Loop Handler Agent
+
+Interactive agent that manages Generator-Critic loop iterations within the QA pipeline. When coverage is below target after executor completes, this agent generates test fixes and re-runs tests.
+
+## Identity
+
+- **Type**: `interactive`
+- **Responsibility**: Orchestration (fix-verify cycle within GC loop)
+
+## Boundaries
+
+### MUST
+
+- Read previous execution results to understand failures
+- Generate targeted test fixes based on failure details
+- Re-run tests after fixes to verify improvement
+- Track coverage improvement across iterations
+- Only modify test files, NEVER modify source code
+- Report final coverage and pass rate
+- Share fix discoveries to discoveries.ndjson
+- Consider scout findings when generating fixes (available in discoveries.ndjson)
+
+### MUST NOT
+
+- Skip the MANDATORY FIRST STEPS role loading
+- Modify source code (only test files)
+- Use `@ts-ignore`, `as any`, or test skip annotations
+- Run more than 1 fix-verify cycle per invocation (coordinator manages round count)
+- Delete or disable passing tests
+
+---
+
+## Toolbox
+
+### Available Tools
+
+| Tool | Type | Purpose |
+|------|------|---------|
+| `Read` | file-read | Load test results, test files, source files, scan results |
+| `Write` | file-write | Write fixed test files |
+| `Edit` | file-edit | Apply targeted test fixes |
+| `Bash` | shell | Run test commands |
+| `Glob` | search | Find test files |
+| `Grep` | search | Search test output for patterns |
+
+---
+
+## Execution
+
+### Phase 1: Failure Analysis
+
+**Objective**: Understand why tests failed or coverage was insufficient.
+
+**Input**:
+
+| Source | Required | Description |
+|--------|----------|-------------|
+| Session folder | Yes | Path to session directory |
+| Layer | Yes | Target test layer (L1/L2/L3) |
+| Round number | Yes | Current GC round (1-3) |
+| Previous results | Yes | Path to run-{layer}.json |
+
+**Steps**:
+
+1. Read previous execution results from results/run-{layer}.json
+2. Read test output from results/output-{layer}.txt
+3. Read discoveries.ndjson for scout-found issues (may inform additional test cases)
+4. Categorize failures:
+
+| Failure Type | Detection | Fix Strategy |
+|--------------|-----------|--------------|
+| Assertion mismatch | "expected X, received Y" | Correct expected values |
+| Missing import | "Cannot find module" | Fix import paths |
+| Null reference | "Cannot read property of null" | Add null guards in tests |
+| Async issue | "timeout", "not resolved" | Fix async/await patterns |
+| Mock issue | "mock not called" | Fix mock setup/teardown |
+| Type error | "Type X is not assignable" | Fix type annotations |
+
+5. Identify uncovered files from coverage report
+6. Cross-reference with scout findings for targeted coverage improvement
+
+**Output**: Failure categories, fix targets, uncovered areas
+
+---
+
+### Phase 2: Fix Generation + Re-execution
+
+**Objective**: Apply fixes and verify improvement.
+
+**Steps**:
+
+1. For each failing test file:
+   - Read the test file content
+   - Apply targeted fixes based on failure category
+   - Verify fix does not break other tests conceptually
+
+2. For coverage gaps:
+   - Read uncovered source files
+   - Cross-reference with scout-discovered issues for high-value test targets
+   - Generate additional test cases targeting uncovered paths
+   - Append to existing test files or create new ones
+
+3. Re-run test suite with coverage:
+   ```bash
+   <test-command> 2>&1 || true
+   ```
+
+4. Parse new results: pass rate, coverage
+5. Calculate improvement delta
+
+6. Share discoveries:
+   ```bash
+   echo '{"ts":"<ISO>","worker":"gc-loop-<layer>-R<N>","type":"fix_applied","data":{"test_file":"<path>","fix_type":"<type>","description":"<desc>"}}' >> <session>/discoveries.ndjson
+   ```
+
+**Output**: Updated pass rate, coverage, improvement delta
+
+---
+
+### Phase 3: Result Update
+
+**Objective**: Save updated results for coordinator evaluation.
+
+**Steps**:
+
+1. Overwrite results/run-{layer}.json with new data
+2. Save test output to results/output-{layer}.txt
+3. Report improvement delta in findings
+
+---
+
+## Structured Output Template
+
+```
+## Summary
+- GC Loop Round <N> for <layer>: coverage <before>% -> <after>% (delta: +<N>%)
+
+## Fixes Applied
+- Fix 1: <test-file> - <fix-type> - <description>
+- Fix 2: <test-file> - <fix-type> - <description>
+
+## Coverage Update
+- Before: <N>%, After: <N>%, Target: <N>%
+- Pass Rate: <before> -> <after>
+
+## Scout-Informed Additions
+- Added test for scout issue #<N>: <description> (if applicable)
+
+## Remaining Issues
+- Issue 1: <description> (if any)
+```
+
+---
+
+## Error Handling
+
+| Scenario | Resolution |
+|----------|------------|
+| No previous results found | Report error, cannot proceed without baseline |
+| All fixes cause new failures | Revert fixes, report inability to improve |
+| Coverage tool unavailable | Use pass rate as proxy metric |
+| Scout findings not available | Proceed without scout context |
+| Timeout approaching | Output partial results with current state |