feat(ui): Implement Track Browser and progress visualization in MMA Dashboard

tests/test_project_manager_tracks.py

@@ -0,0 +1,94 @@
+import pytest
+import json
+from pathlib import Path
+from project_manager import get_all_tracks, save_track_state
+from models import TrackState, Metadata, Ticket
+from datetime import datetime
+
+def test_get_all_tracks_empty(tmp_path):
+    # conductor/tracks directory doesn't exist
+    assert get_all_tracks(tmp_path) == []
+
+def test_get_all_tracks_with_state(tmp_path):
+    tracks_dir = tmp_path / "conductor" / "tracks"
+    tracks_dir.mkdir(parents=True)
+    
+    track_id = "test_track_1"
+    track_dir = tracks_dir / track_id
+    track_dir.mkdir()
+    
+    # Create TrackState
+    metadata = Metadata(id=track_id, name="Test Track 1", status="in_progress", 
+                        created_at=datetime.now(), updated_at=datetime.now())
+    tasks = [
+        Ticket(id="task1", description="desc1", status="completed", assigned_to="user"),
+        Ticket(id="task2", description="desc2", status="todo", assigned_to="user")
+    ]
+    state = TrackState(metadata=metadata, discussion=[], tasks=tasks)
+    save_track_state(track_id, state, tmp_path)
+    
+    tracks = get_all_tracks(tmp_path)
+    assert len(tracks) == 1
+    track = tracks[0]
+    assert track["id"] == track_id
+    assert track["title"] == "Test Track 1"
+    assert track["status"] == "in_progress"
+    assert track["complete"] == 1
+    assert track["total"] == 2
+    assert track["progress"] == 0.5
+
+def test_get_all_tracks_with_metadata_json(tmp_path):
+    tracks_dir = tmp_path / "conductor" / "tracks"
+    tracks_dir.mkdir(parents=True)
+    
+    track_id = "test_track_2"
+    track_dir = tracks_dir / track_id
+    track_dir.mkdir()
+    
+    metadata = {
+        "id": track_id,
+        "title": "Test Track 2",
+        "status": "planned"
+    }
+    with open(track_dir / "metadata.json", "w") as f:
+        json.dump(metadata, f)
+        
+    # Create plan.md to test parsing
+    plan_content = """
+# Plan
+- [x] Task: Task 1
+- [ ] Task: Task 2
+- [~] Task: Task 3
+"""
+    with open(track_dir / "plan.md", "w") as f:
+        f.write(plan_content)
+        
+    tracks = get_all_tracks(tmp_path)
+    assert len(tracks) == 1
+    track = tracks[0]
+    assert track["id"] == track_id
+    assert track["title"] == "Test Track 2"
+    assert track["status"] == "planned"
+    assert track["complete"] == 1
+    assert track["total"] == 3
+    assert pytest.approx(track["progress"]) == 0.333333
+
+def test_get_all_tracks_malformed(tmp_path):
+    tracks_dir = tmp_path / "conductor" / "tracks"
+    tracks_dir.mkdir(parents=True)
+    
+    track_id = "malformed_track"
+    track_dir = tracks_dir / track_id
+    track_dir.mkdir()
+    
+    # Malformed metadata.json
+    with open(track_dir / "metadata.json", "w") as f:
+        f.write("{ invalid json }")
+        
+    tracks = get_all_tracks(tmp_path)
+    assert len(tracks) == 1
+    track = tracks[0]
+    assert track["id"] == track_id
+    assert track["status"] == "unknown"
+    assert track["complete"] == 0
+    assert track["total"] == 0