feat(personas): Add persona_id support to Ticket/WorkerContext and ConductorEngine

tests/test_persona_id.py

@@ -0,0 +1,28 @@
+import pytest
+from src.models import Ticket, WorkerContext
+
+
+def test_ticket_persona_id_serialization():
+    ticket = Ticket(
+        id="test-1", description="Test task", persona_id="SecuritySpecialist"
+    )
+    data = ticket.to_dict()
+    assert data["persona_id"] == "SecuritySpecialist"
+
+
+def test_ticket_persona_id_deserialization():
+    data = {"id": "test-2", "description": "Test task 2", "persona_id": "CodeReviewer"}
+    ticket = Ticket.from_dict(data)
+    assert ticket.persona_id == "CodeReviewer"
+
+
+def test_ticket_persona_id_default():
+    ticket = Ticket(id="test-3", description="Test")
+    assert ticket.persona_id is None
+
+
+def test_worker_context_persona_id():
+    ctx = WorkerContext(
+        ticket_id="test-1", model_name="gemini-2.5-flash", persona_id="DebugHelper"
+    )
+    assert ctx.persona_id == "DebugHelper"