Stage 07.1 - auto trading skeleton UI, state machine and mock controls

app/src/trading/auto/state.py

@@ -0,0 +1,14 @@
+# app/src/trading/auto/state.py
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+
+@dataclass(slots=True)
+class AutoTradeState:
+    status: str = "OFF"
+    strategy: str | None = None
+    symbol: str = ""
+    risk_percent: float | None = None
+    pnl_usd: float = 0.0