Keep bot operational when forecast model is unavailable

tests/test_strategy.py

@@ -566,6 +566,71 @@ def test_torch_forecast_blocks_failed_quality_gate(make_settings, tmp_path) -> N
     assert signal.diagnostics["checks"]["quality_gate_ok"] is False
 
 
+def test_torch_forecast_uses_trend_fallback_when_model_is_not_ready(make_settings, tmp_path) -> None:
+    settings = make_settings(
+        tmp_path,
+        strategy_mode="torch_forecast",
+        time_series_trend_fallback_enabled=True,
+        time_series_require_quality_gate=True,
+        time_series_require_fresh_model=True,
+        max_position_usdt=50,
+    )
+    strategy = SpotStrategy(settings)
+    ticker = Ticker("BTCUSDT", 105, 104.99, 105.01, 10_000_000, 1000, 1.0)
+
+    signal = strategy.entry_signal(
+        "BTCUSDT",
+        _trend_entry_candles(),
+        ticker,
+        open_positions_for_symbol=0,
+        forecast={"usable": False, "model": "none", "quality_gate_passed": False},
+        account={"equity": 100.0},
+        trend_candles=_daily_trend_candles(),
+    )
+
+    assert signal.action == "BUY"
+    assert signal.diagnostics["trade_mode"] == "TREND_MACD_FALLBACK"
+    assert signal.diagnostics["entry_path"] == "trend_macd_fallback"
+    assert signal.diagnostics["forecast_fallback_reasons"] == [
+        "torch_model_unavailable",
+        "quality_gate_not_passed",
+        "model_not_fresh",
+    ]
+
+
+def test_torch_forecast_uses_trend_exit_for_fallback_position(make_settings, tmp_path) -> None:
+    settings = make_settings(
+        tmp_path,
+        strategy_mode="torch_forecast",
+        time_series_trend_fallback_enabled=True,
+    )
+    strategy = SpotStrategy(settings)
+    candles = _trend_entry_candles()
+    candles[-2].macd = 0.2
+    candles[-2].macd_signal = 0.0
+    candles[-1].macd = -0.1
+    candles[-1].macd_signal = 0.0
+    position = Position(
+        1,
+        "BTCUSDT",
+        1,
+        100,
+        100,
+        0.1,
+        96,
+        120,
+        100,
+        entry_diagnostics={"entry_path": "trend_macd_fallback"},
+    )
+    ticker = Ticker("BTCUSDT", 104, 103.99, 104.01, 1_000_000, 100, 0)
+
+    signal = strategy.exit_signal(position, candles, ticker, forecast={})
+
+    assert signal.action == "SELL"
+    assert signal.diagnostics["trade_mode"] == "TREND_MACD_FALLBACK"
+    assert "MACD" in signal.reason
+
+
 def test_torch_forecast_allows_explicit_manual_quality_override(make_settings, tmp_path) -> None:
     settings = make_settings(
         tmp_path,