feat: remove OpenCode assistant mode

backend/tests/test_assistant_types.py

@@ -0,0 +1,38 @@
+"""Removed assistant types must fail cleanly without changing stored data."""
+
+import unittest
+from types import SimpleNamespace
+from unittest.mock import AsyncMock
+
+from fastapi import HTTPException
+from pydantic import ValidationError
+
+from routes.assistants import duplicate_assistant, get_assistant
+from schemas import AssistantUpsert
+
+
+class AssistantTypeTests(unittest.TestCase):
+    def test_removed_type_is_rejected(self):
+        with self.assertRaises(ValidationError):
+            AssistantUpsert(name="旧助手", type="opencode")
+
+    def test_remaining_types_can_be_created(self):
+        for assistant_type in ("prompt", "workflow", "dify", "fastgpt"):
+            with self.subTest(type=assistant_type):
+                assistant = AssistantUpsert(name="助手", type=assistant_type)
+                self.assertEqual(assistant.type, assistant_type)
+
+
+class RetiredAssistantTests(unittest.IsolatedAsyncioTestCase):
+    async def test_old_record_returns_gone_without_writes(self):
+        for operation in (get_assistant, duplicate_assistant):
+            with self.subTest(operation=operation.__name__):
+                session = AsyncMock()
+                session.get.return_value = SimpleNamespace(type="opencode")
+                with self.assertRaises(HTTPException) as error:
+                    await operation("legacy_assistant", session)
+                self.assertEqual(error.exception.status_code, 410)
+                session.execute.assert_not_called()
+                session.add.assert_not_called()
+                session.commit.assert_not_called()
+                session.delete.assert_not_called()

backend/tests/test_brains.py

@@ -185,7 +185,7 @@ class BrainRegistryTests(unittest.TestCase):
 
     def test_unknown_brain_does_not_fallback_to_prompt(self):
         with self.assertRaisesRegex(ValueError, "尚未实现"):
-            build_brain(AssistantConfig(type="opencode"))
+            build_brain(AssistantConfig(type="unknown"))
 
     def test_workflow_realtime_is_accepted_at_schema_boundary(self):
         assistant = AssistantUpsert(