# Track Specification: Track Progress Visualization (track_progress_viz_20260306)

## Overview
Progress bars and percentage completion for active tracks and tickets.

## Current State Audit

### Already Implemented
- **`models.Track`**: Has tickets list
- **`project_manager.get_all_tracks()`**: Returns track progress
- **GUI**: Shows ticket status but no progress bar

### Gaps to Fill
- No visual progress bar
- No percentage completion display
- No ETA estimation

## Functional Requirements
- Progress bar showing % complete
- Ticket count: X/Y completed
- ETA estimation based on average time per ticket

## Key Integration Points
| File | Purpose |
|-----|---------|
| `src/gui_2.py` | Progress bar rendering |
| `src/dag_engine.py` | Completion calculation |

## Acceptance Criteria
- [ ] Progress bar renders
- [ ] Percentage accurate
- [ ] Counts match actual tickets
- [ ] ETA calculation works
- [ ] 1-space indentation