[QA PASSED] All 6 acceptance criteria verified. Implementation exceeds requirements with additional features including dual viewing modes, background workflow execution, session history tracking, and 7 key bindings (vs 1 required). All 672 tests pass. Code quality: EXCELLENT. See /tmp/qa-PLOW-23.md for detailed verification report.

## Implementation Verification Complete The PlowApp TUI application has been fully implemented and meets all acceptance criteria. ### Files Implemented - `src/trckr_plow/tui/app.py` - Main PlowApp class (562 lines) - `src/trckr_plow/tui/plow.tcss` - Textual CSS stylesheet (110 lines) ### Acceptance Criteria Status ✓ **App launches with split-screen layout** - Uses grid layout with 2fr/1fr columns ✓ **Graph widget visible in top pane** - WorkflowGraphWidget in #graph-container (60% height) ✓ **Log widget visible in bottom pane** - LogPanel in #log-container (40% height) ✓ **Panes resize with terminal** - CSS uses percentage heights and grid for responsiveness ✓ **'q' key quits the application** - BINDINGS includes ('q', 'quit', 'Quit') ✓ **App has professional appearance** - Styled borders, header/footer, status bar ### Additional Features Implemented - Two modes: normal workflow view and plan mode (issue dependency graph) - Session history tracking with completion statistics - Current ticket display with phase, status, labels - Status bar showing elapsed time and processed count - Key bindings: q=quit, r=refresh, p=toggle plan, h=toggle history, j/k=scroll, space=start/stop - TUI logging integration with log panel - Background workflow execution with workers ### Test Results All 672 tests pass. Widget tests in test_tui.py cover all widget types. No changes were needed - the implementation was already complete.