fix(d1): Calendar-Suite + ai_proactive repariert — conftest CalendarPlugin-Import wiederhergestellt (abbe7a1-Regression), CalendarContract-Zugriffe snake_case→PascalCase (context_tools, services ×2, mail/routes), 2 stale Rate-Limit-Tests auf zentrale check_rate_limit-Grenze umgestellt; test_calendar 34/34, ai_proactive-Failures behoben; Mail-Vorbestand dokumentiert

tests/conftest.py

@@ -53,6 +53,7 @@ from app.models.tenant import Tenant
 from app.models.user import User, UserTenant
 from app.models.user_preference import UserPreference  # noqa: F401
 from app.models.workflow import Workflow, WorkflowInstance, WorkflowStepHistory  # noqa: F401
+from app.plugins.builtins.calendar import CalendarPlugin  # noqa: F401
 from app.models.outbox import EventOutbox  # noqa: F401
 from app.models.consumer_inbox import ConsumerInbox  # noqa: F401
 from app.models.saved_filter import SavedFilter  # noqa: F401

tests/test_ai_proactive.py

@@ -15,6 +15,7 @@ from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 import pytest_asyncio
+from fastapi import HTTPException
 from httpx import ASGITransport, AsyncClient
 from sqlalchemy import text
 from sqlalchemy.ext.asyncio import AsyncEngine, AsyncSession, async_sessionmaker
@@ -1104,14 +1105,11 @@ async def test_generate_suggestion_llm_failure():
 
 @pytest.mark.asyncio
 @patch("app.plugins.builtins.ai_proactive.services.create_db_session")
-async def test_handle_context_change_rate_limited(mock_create_session, redis_client):
+async def test_handle_context_change_rate_limited(mock_create_session):
     """Rate-limit prevents suggestion generation."""
     tenant_id = uuid.uuid4()
     user_id = uuid.uuid4()
 
-    # Pre-set rate limit key in Redis
-    await redis_client.setex(f"ai_proactive:rate:{user_id}", 10, "1")
-
     mock_session = AsyncMock()
     mock_session.__aenter__ = AsyncMock(return_value=mock_session)
     mock_session.__aexit__ = AsyncMock(return_value=None)
@@ -1127,8 +1125,14 @@ async def test_handle_context_change_rate_limited(mock_create_session, redis_cli
         rate_limit_seconds=10,
         model="ollama/deepseek-v4",
     )
+    # Since bb36378 the rate limit goes through app.core.rate_limit.check_rate_limit;
+    # simulate an exceeded limit instead of patching the removed services.get_cache.
     with (
-        patch("app.plugins.builtins.ai_proactive.services.get_cache", return_value=redis_client),
+        patch(
+            "app.core.rate_limit.check_rate_limit",
+            new_callable=AsyncMock,
+            side_effect=HTTPException(status_code=429),
+        ),
         patch(
             "app.plugins.builtins.ai_proactive.services.get_user_settings",
             new_callable=AsyncMock,
@@ -1147,7 +1151,7 @@ async def test_handle_context_change_rate_limited(mock_create_session, redis_cli
 
 @pytest.mark.asyncio
 @patch("app.plugins.builtins.ai_proactive.services.create_db_session")
-async def test_handle_context_change_disabled(mock_create_session, redis_client):
+async def test_handle_context_change_disabled(mock_create_session):
     """Settings disabled → no suggestion."""
     tenant_id = uuid.uuid4()
     user_id = uuid.uuid4()
@@ -1167,13 +1171,12 @@ async def test_handle_context_change_disabled(mock_create_session, redis_client)
         rate_limit_seconds=10,
         model="ollama/deepseek-v4",
     )
-    with (
-        patch("app.plugins.builtins.ai_proactive.services.get_cache", return_value=redis_client),
-        patch(
-            "app.plugins.builtins.ai_proactive.services.get_user_settings",
-            new_callable=AsyncMock,
-            return_value=disabled_settings,
-        ),
+    # Disabled settings cause an early return before any Redis access;
+    # no cache/rate-limit patch needed since bb36378.
+    with patch(
+        "app.plugins.builtins.ai_proactive.services.get_user_settings",
+        new_callable=AsyncMock,
+        return_value=disabled_settings,
     ):
         await handle_context_change({
             "user_id": str(user_id),