feat(mma): Implement Ticket and Track models

models.py

@@ -0,0 +1,22 @@
+from dataclasses import dataclass, field
+from typing import List
+
+@dataclass
+class Ticket:
+    """
+    Represents a discrete unit of work within a track.
+    """
+    id: str
+    description: str
+    status: str
+    assigned_to: str
+    depends_on: List[str] = field(default_factory=list)
+
+@dataclass
+class Track:
+    """
+    Represents a collection of tickets that together form an architectural track or epic.
+    """
+    id: str
+    description: str
+    tickets: List[Ticket] = field(default_factory=list)