feat: add ticket list visual support api

backend/apps/tickets/tests/test_ticket_api.py

@@ -1,3 +1,5 @@
+from django.contrib.auth import get_user_model
+
 from apps.tickets.models import Ticket, TicketEvent
 
 
@@ -31,8 +33,63 @@ def test_list_tickets_filters_by_status(admin_client, db):
 
     assert response.status_code == 200
     payload = response.json()
-    assert len(payload) == 1
-    assert payload[0]["ticket_no"] == "TK202606300001"
+    assert payload["total"] == 1
+    assert payload["items"][0]["ticket_no"] == "TK202606300001"
+
+
+def test_list_tickets_returns_paginated_response_with_display_users(admin_client, db):
+    user_model = get_user_model()
+    requester = user_model.objects.create_user(username="requester", first_name="请求人")
+    assignee = user_model.objects.create_user(username="assignee", first_name="处理人")
+    Ticket.objects.create(
+        ticket_no="TK202607010100",
+        title="Payment failed",
+        description="A",
+        requester=requester,
+        assignee=assignee,
+        related_system="CRM",
+    )
+
+    response = admin_client.get("/api/tickets?page=1&page_size=20")
+
+    assert response.status_code == 200
+    payload = response.json()
+    assert payload["page"] == 1
+    assert payload["page_size"] == 20
+    assert payload["total"] == 1
+    assert payload["total_pages"] == 1
+    assert payload["items"][0]["requester"]["display_name"] == "请求人"
+    assert payload["items"][0]["assignee"]["display_name"] == "处理人"
+
+
+def test_list_tickets_filters_by_priority_related_system_and_view(admin_client, db):
+    user_model = get_user_model()
+    current_user = user_model.objects.get(username="admin")
+    Ticket.objects.create(
+        ticket_no="TK202607010101",
+        title="Mine urgent CRM",
+        description="A",
+        priority="urgent",
+        related_system="CRM",
+        assignee=current_user,
+        created_by=current_user,
+    )
+    Ticket.objects.create(
+        ticket_no="TK202607010102",
+        title="Other medium ERP",
+        description="B",
+        priority="medium",
+        related_system="ERP",
+    )
+
+    response = admin_client.get(
+        "/api/tickets?priority=urgent&related_system=CRM&view=assigned_to_me"
+    )
+
+    assert response.status_code == 200
+    payload = response.json()
+    assert payload["total"] == 1
+    assert payload["items"][0]["ticket_no"] == "TK202607010101"
 
 
 def test_transition_ticket_status_creates_event(admin_client, db):
@@ -53,3 +110,20 @@ def test_transition_ticket_status_creates_event(admin_client, db):
     ticket.refresh_from_db()
     assert ticket.status == "in_progress"
     assert ticket.events.filter(event_type="status_change").exists()
+
+
+def test_transition_ticket_requires_non_empty_remark(admin_client, db):
+    ticket = Ticket.objects.create(
+        ticket_no="TK202607010103",
+        title="A",
+        description="A",
+        status="pending",
+    )
+
+    response = admin_client.post(
+        f"/api/tickets/{ticket.id}/status",
+        data={"status": "in_progress", "remark": ""},
+        content_type="application/json",
+    )
+
+    assert response.status_code == 400