feat: reorganize admin panel around accounts

backend/tests/test_admin.py

@@ -19,8 +19,38 @@ class TestAdminEndpoints:
             "/api/v1/admin/users", headers=admin_auth_headers
         )
         assert response.status_code == 200
-        users = response.json()
-        assert len(users) >= 2  # admin + test_user
+        payload = response.json()
+        assert payload["total"] >= 2  # admin + test_user
+        assert len(payload["items"]) >= 2
+
+    @pytest.mark.asyncio
+    async def test_list_users_supports_search(
+        self, client: AsyncClient, admin_auth_headers: dict, test_user: dict
+    ):
+        """Test admin people search by user email."""
+        response = await client.get(
+            "/api/v1/admin/users",
+            params={"search": test_user["email"]},
+            headers=admin_auth_headers,
+        )
+        assert response.status_code == 200
+        payload = response.json()
+        assert payload["total"] >= 1
+        assert any(item["email"] == test_user["email"] for item in payload["items"])
+
+    @pytest.mark.asyncio
+    async def test_list_accounts_as_admin(
+        self, client: AsyncClient, admin_auth_headers: dict
+    ):
+        """Test listing accounts with member data."""
+        response = await client.get(
+            "/api/v1/admin/accounts", headers=admin_auth_headers
+        )
+        assert response.status_code == 200
+        payload = response.json()
+        assert payload["total"] >= 1
+        assert len(payload["items"]) >= 1
+        assert "members" in payload["items"][0]
 
     @pytest.mark.asyncio
     async def test_list_users_as_non_admin(