feat(cerbero): tools wrapper for Phase 1 indicator subset

Espone sma/rsi/atr/macd/realized_vol/funding_rate sopra CerberoClient
delegando a call_tool(exchange, tool, args).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/unit/test_cerbero_tools.py

@@ -0,0 +1,32 @@
+import pytest
+
+from multi_swarm.cerbero.tools import CerberoTools
+
+
+def test_tools_dispatch_sma(mocker):
+    fake_client = mocker.MagicMock()
+    fake_client.call_tool.return_value = {"value": 100.0}
+    t = CerberoTools(fake_client)
+    out = t.sma(exchange="bybit", symbol="BTCUSDT", timeframe="1h", length=20)
+    fake_client.call_tool.assert_called_once_with(
+        "bybit", "sma", {"symbol": "BTCUSDT", "timeframe": "1h", "length": 20}
+    )
+    assert out == {"value": 100.0}
+
+
+def test_tools_dispatch_rsi(mocker):
+    fake_client = mocker.MagicMock()
+    fake_client.call_tool.return_value = {"value": 55.0}
+    t = CerberoTools(fake_client)
+    out = t.rsi(exchange="bybit", symbol="BTCUSDT", timeframe="1h", length=14)
+    fake_client.call_tool.assert_called_once_with(
+        "bybit", "rsi", {"symbol": "BTCUSDT", "timeframe": "1h", "length": 14}
+    )
+    assert out == {"value": 55.0}
+
+
+def test_tools_unknown_raises(mocker):
+    fake_client = mocker.MagicMock()
+    t = CerberoTools(fake_client)
+    with pytest.raises(AttributeError):
+        t.nonexistent_tool()  # type: ignore[attr-defined]