fix: dedupe daily report Telegram in dual mode and show host in summary fallback

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/tests/test_telegram_templates.py

@@ -210,6 +210,27 @@ def test_lifecycle_footer_uses_telegram_via_agent_when_present():
     assert "📡 Оповещение: агент (rdp-login-monitor 1.2.30-SAC)" in text
 
 
+def test_daily_report_summary_fallback_includes_host():
+    host = Host(hostname="srv1", display_name="K6A-DC5", ipv4="192.168.160.91", os_family="linux")
+    event = Event(
+        event_id="00000000-0000-4000-8000-000000000508",
+        host_id=1,
+        host=host,
+        occurred_at=datetime(2026, 6, 3, 9, 0, tzinfo=timezone.utc),
+        category="report",
+        type="report.daily.ssh",
+        severity="info",
+        title="Ежедневный отчёт SSH",
+        summary="SSH 24ч: успех 0, неудач 0, банов 0",
+        details={"generated_by": "sac"},
+        payload={},
+    )
+    text = format_event_telegram_html(event)
+    assert "K6A-DC5" in text
+    assert "SSH 24ч: успех 0" in text
+    assert "ЕЖЕДНЕВНЫЙ ОТЧЕТ SSH" in text
+
+
 def test_rdp_shadow_control_template():
     host = Host(hostname="RDS01", display_name="RDS Farm", ipv4="10.0.0.5", os_family="windows")
     event = Event(