feat(mma): Implement state mutator methods for Ticket and Track

models.py

@@ -1,5 +1,5 @@
 from dataclasses import dataclass, field
-from typing import List
+from typing import List, Optional
 
 @dataclass
 class Ticket:
@@ -11,6 +11,16 @@ class Ticket:
     status: str
     assigned_to: str
     depends_on: List[str] = field(default_factory=list)
+    blocked_reason: Optional[str] = None
+
+    def mark_blocked(self, reason: str):
+        """Sets the ticket status to 'blocked' and records the reason."""
+        self.status = "blocked"
+        self.blocked_reason = reason
+
+    def mark_complete(self):
+        """Sets the ticket status to 'completed'."""
+        self.status = "completed"
 
 @dataclass
 class Track:
@@ -21,6 +31,31 @@ class Track:
     description: str
     tickets: List[Ticket] = field(default_factory=list)
 
+    def get_executable_tickets(self) -> List[Ticket]:
+        """
+        Returns all 'todo' tickets whose dependencies are all 'completed'.
+        """
+        # Map ticket IDs to their current status for efficient lookup
+        status_map = {t.id: t.status for t in self.tickets}
+        
+        executable = []
+        for ticket in self.tickets:
+            if ticket.status != "todo":
+                continue
+            
+            # Check if all dependencies are completed
+            all_deps_completed = True
+            for dep_id in ticket.depends_on:
+                # If a dependency is missing from the track, we treat it as not completed (or we could raise an error)
+                if status_map.get(dep_id) != "completed":
+                    all_deps_completed = False
+                    break
+            
+            if all_deps_completed:
+                executable.append(ticket)
+        
+        return executable
+
 @dataclass
 class WorkerContext:
     """