feat: FastTracker II style task monitoring widget

[chernistry]

Summary

• Add TrackerView, a Textual Static widget that renders agent activity as a MOD tracker pattern editor with channels, notes, effects, and VU meters
• Each agent maps to a tracker channel; task IDs become musical notes, agent metrics become effect codes (Fxx/Vxx/Txx), and activity levels display as gradient VU bars
• Full FastTracker II color palette with accessibility fallbacks (ASCII box-drawing, text-mode VU bars)
• 24 unit tests covering note mapping, effect formatting, VU rendering, channel management, row wrapping, and highlight behavior

Test plan

• uv run pytest tests/unit/test_tracker_view.py -x -q -- 24 passed
• Ruff lint clean
• Pyright typecheck clean (0 errors, 0 warnings)
• Visual integration into app.py (deferred -- widget not yet wired)

🤖 Generated with Claude Code

[github-actions]

AI Review (GitHub Models)

Summary

The pull request introduces a new task monitoring widget styled after FastTracker II for visualizing agent activities in Bernstein, along with comprehensive unit tests. The implementation appears to follow Python standards, and the tests cover various edge cases and functionality, ensuring reliable performance.

Risk Assessment

Medium: While the code features extensive unit tests, the introduction of new UI components might lead to unforeseen issues in the user interface and interactions. The widget's reliance on visual rendering could also introduce accessibility concerns that aren't fully addressed.

Actionable Recommendations

• Accessibility Review: Conduct a thorough review of the accessibility features to ensure compliance with standards and best practices.
• Performance Testing: Implement performance benchmarks to assess the widget's rendering speed and ensure it handles larger datasets efficiently without degradation.
• Documentation Enhancements: Expand documentation to include examples of usage, styling options, and configuration, which would facilitate adoption by users.
• UI/UX Feedback Loop: Consider establishing feedback mechanisms for

[github-actions]

CI Summary

Check	Result
Repo hygiene	✅ success
Lint	✅ success
Type check	✅ success
Tests	❌ failure
Spelling	✅ success
Dead code	✅ success
Workflow lint	✅ success
Dist size	✅ success
SonarCloud	⏭️ skipped

Coverage and detailed reports are available via Codecov and the Checks tab.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• src/bernstein/tui/tracker_view.py - 0 issues

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_{Reviewed by grok-code-fast-1 · 68,585 tokens}

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud