fix(api): share operator summary cache through redis

apps/api/tests/test_operator_summary_cache.py

@@ -1,12 +1,33 @@
 from datetime import UTC, datetime
 
+import pytest
+
 from src.services.operator_summary_cache import (
     clear_operator_summary_cache,
+    get_cached_operator_summary_async,
     get_cached_operator_summary,
+    store_operator_summary_async,
     store_operator_summary,
 )
 
 
+class _FakeRedis:
+    def __init__(self) -> None:
+        self.values: dict[str, str] = {}
+        self.expirations: dict[str, int] = {}
+
+    async def get(self, key: str) -> str | None:
+        return self.values.get(key)
+
+    async def set(self, key: str, value: str, ex: int) -> bool:
+        self.values[key] = value
+        self.expirations[key] = ex
+        return True
+
+    async def delete(self, key: str) -> int:
+        return 1 if self.values.pop(key, None) is not None else 0
+
+
 def test_operator_summary_cache_returns_copy_with_hit_metadata() -> None:
     clear_operator_summary_cache()
     key = {"project_id": "awoooi", "limit": 30}
@@ -47,6 +68,38 @@ def test_operator_summary_cache_expires_by_ttl() -> None:
         now_utc=datetime(2026, 6, 1, tzinfo=UTC),
     )
 
+
+@pytest.mark.asyncio
+async def test_operator_summary_cache_uses_shared_redis(monkeypatch) -> None:
+    clear_operator_summary_cache()
+    fake_redis = _FakeRedis()
+    monkeypatch.setattr("src.core.redis_client.get_redis", lambda: fake_redis)
+    key = {"project_id": "awoooi", "per_page": 1}
+
+    stored = await store_operator_summary_async(
+        "callback_replies",
+        key,
+        {"total": 4, "items": []},
+        ttl_seconds=20,
+        now_monotonic=300.0,
+        now_utc=datetime(2026, 6, 1, tzinfo=UTC),
+    )
+
+    assert stored["cache"]["status"] == "miss"
+    assert fake_redis.values
+
+    clear_operator_summary_cache()
+    cached = await get_cached_operator_summary_async(
+        "callback_replies",
+        key,
+        ttl_seconds=20,
+        now_monotonic=302.0,
+    )
+
+    assert cached is not None
+    assert cached["cache"]["status"] == "hit"
+    assert cached["total"] == 4
+
     assert (
         get_cached_operator_summary(
             "callback_replies",