test(ollama): align slow recovery with gcp routing policy

apps/api/tests/test_ollama_auto_recovery.py

@@ -8,7 +8,7 @@ OllamaAutoRecoveryService 單元測試 - P1.1d
 測試覆蓋：
 1. 111 OFFLINE → HEALTHY × 3 → 觸發 _switch_back_to_ollama
 2. 111 OFFLINE → HEALTHY × 2 → OFFLINE → counter 歸零
-3. 中途 SLOW/DEGRADED → counter 歸零
+3. 中途 DEGRADED/OFFLINE → counter 歸零；SLOW 視為可用（GCP 高負載仍優於 Gemini）
 4. stop() 優雅取消 task
 5. start() 重複呼叫不重複建立 task
 6. _switch_back_to_ollama：clear_cache + notify_recovery + Telegram alerter
@@ -22,17 +22,16 @@ OllamaAutoRecoveryService 單元測試 - P1.1d
 from __future__ import annotations
 
 import asyncio
-from unittest.mock import AsyncMock, MagicMock, call, patch
+from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 
-from src.services.ollama_health_monitor import HealthReport, HealthStatus
 from src.services.ollama_auto_recovery import (
     OllamaAutoRecoveryService,
     get_ollama_auto_recovery_service,
     reset_ollama_auto_recovery_service,
 )
-
+from src.services.ollama_health_monitor import HealthReport, HealthStatus
 
 # =============================================================================
 # Fixtures / Helpers
@@ -115,15 +114,15 @@ class TestCheckAndRecover:
         assert svc.consecutive_healthy == 0
 
     @pytest.mark.asyncio
-    async def test_slow_resets_counter(self):
-        """SLOW → counter 歸零（不算穩定）"""
+    async def test_slow_increments_counter(self):
+        """SLOW → counter +1（GCP 高負載仍優於 Gemini fallback）"""
         svc, mock_monitor, _ = _make_service(current_primary="gemini")
         svc._consecutive_healthy = 1
         mock_monitor.check.return_value = _make_health(HealthStatus.SLOW)
 
         await svc._check_and_recover()
 
-        assert svc.consecutive_healthy == 0
+        assert svc.consecutive_healthy == 2
 
     @pytest.mark.asyncio
     async def test_degraded_resets_counter(self):