Notification upgrades: lifecycle, configurable levels, summaries

- NOTIFY_LEVELS chooses which event levels are sent (default trade,error).
- NOTIFY_LIFECYCLE sends explicit start/stop messages; the kill switch always
  notifies at error level.
- SUMMARY_INTERVAL_MINUTES sends a periodic portfolio summary (equity, per
  strategy P&L, allocation, halted state) via a background task started with
  the run and stopped on stop/kill/shutdown.
- Wires the new vars plus the go-live vars through both compose files and the
  deploy workflow. Adds tests.

backend/tests/test_notify.py

@@ -66,3 +66,101 @@ async def test_runtime_ignores_info_events() -> None:
     runtime._broadcast({"type": "event", "data": {"level": "info", "message": "started"}})
     await asyncio.gather(*list(runtime._notify_tasks))
     assert recorder.messages == []
+
+
+async def test_notify_levels_are_configurable() -> None:
+    recorder = RecordingNotifier()
+    settings = Settings(telegram_bot_token="", notify_webhook_url="", notify_levels="info,trade")
+    runtime = Runtime(settings, notifier=recorder)
+    runtime._broadcast({"type": "event", "data": {"level": "info", "message": "started"}})
+    await asyncio.gather(*list(runtime._notify_tasks))
+    assert recorder.messages == [("info", "started")]
+
+
+async def test_start_and_stop_notify_lifecycle(settings, store, market) -> None:
+    from app.broker.paper import PaperBroker
+    from app.schemas import StartManyRequest, StrategySpec
+
+    settings.notify_lifecycle = True
+    recorder = RecordingNotifier()
+    runtime = Runtime(
+        settings,
+        store,
+        feed_factory=lambda _s: market,
+        broker_factory=lambda _s: PaperBroker(fee_bps=0, slippage_bps=0),
+        notifier=recorder,
+    )
+    await runtime.start_many(StartManyRequest(strategies=[StrategySpec(strategy_key="sma_cross")]))
+    await runtime.stop()
+    await asyncio.gather(*list(runtime._notify_tasks))
+
+    levels = [level for level, _ in recorder.messages]
+    assert "info" in levels
+    assert any("Started" in msg for _, msg in recorder.messages)
+    assert any("Stopped" in msg for _, msg in recorder.messages)
+    await runtime.shutdown()
+
+
+async def test_kill_notifies(settings, store, market) -> None:
+    from app.broker.paper import PaperBroker
+    from app.schemas import StartManyRequest, StrategySpec
+
+    recorder = RecordingNotifier()
+    runtime = Runtime(
+        settings,
+        store,
+        feed_factory=lambda _s: market,
+        broker_factory=lambda _s: PaperBroker(fee_bps=0, slippage_bps=0),
+        notifier=recorder,
+    )
+    await runtime.start_many(StartManyRequest(strategies=[StrategySpec(strategy_key="sma_cross")]))
+    await runtime.kill("panic")
+    await asyncio.gather(*list(runtime._notify_tasks))
+    assert any(level == "error" and "KILL SWITCH" in msg for level, msg in recorder.messages)
+    await runtime.shutdown()
+
+
+async def test_summary_message_lists_strategies(settings, store, market) -> None:
+    from app.broker.paper import PaperBroker
+    from app.schemas import StartManyRequest, StrategySpec
+
+    runtime = Runtime(
+        settings,
+        store,
+        feed_factory=lambda _s: market,
+        broker_factory=lambda _s: PaperBroker(fee_bps=0, slippage_bps=0),
+        notifier=RecordingNotifier(),
+    )
+    await runtime.start_many(
+        StartManyRequest(
+            strategies=[
+                StrategySpec(strategy_key="sma_cross", weight=1),
+                StrategySpec(strategy_key="ema_cross", weight=3),
+            ],
+            starting_balance=10000,
+        )
+    )
+    message = runtime.summary_message()
+    assert "Portfolio" in message
+    assert "SMA Crossover" in message
+    assert "EMA Crossover" in message
+    assert "75%" in message  # the weighted strategy's allocation
+    await runtime.shutdown()
+
+
+async def test_summary_loop_runs(settings, store, market) -> None:
+    from app.broker.paper import PaperBroker
+
+    settings.summary_interval_minutes = 1  # -> 60s; we only check it starts
+    recorder = RecordingNotifier()
+    runtime = Runtime(
+        settings,
+        store,
+        feed_factory=lambda _s: market,
+        broker_factory=lambda _s: PaperBroker(fee_bps=0, slippage_bps=0),
+        notifier=recorder,
+    )
+    runtime._start_summary_loop()
+    assert runtime._summary_task is not None
+    runtime._stop_summary_loop()
+    assert runtime._summary_task is None