Stage 05.1 - order draft flow

app/src/trading/orders/__init__.py

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+"""Package marker."""

app/src/trading/orders/models.py

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+from __future__ import annotations
+
+from dataclasses import dataclass
+
+
+@dataclass(slots=True)
+class OrderDraft:
+    symbol: str
+    side: str
+    order_type: str
+    quantity: str
+    status: str = "draft"

app/src/trading/orders/service.py

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+from __future__ import annotations
+
+from src.core.config import load_settings
+from src.storage.repositories.order_drafts import OrderDraftRepository
+from src.trading.journal.service import JournalService
+from src.trading.orders.models import OrderDraft
+
+
+class OrderDraftsService:
+    def __init__(self) -> None:
+        self.settings = load_settings()
+        self.repository = OrderDraftRepository()
+        self.journal = JournalService()
+
+    def create_default_draft(self) -> OrderDraft:
+        draft = OrderDraft(
+            symbol=self.settings.default_symbol,
+            side="BUY",
+            order_type="MARKET",
+            quantity="0.001",
+            status="draft",
+        )
+        self._save_draft(draft)
+        return draft
+
+    def _save_draft(self, draft: OrderDraft) -> None:
+        self.repository.add_draft(
+            symbol=draft.symbol,
+            side=draft.side,
+            order_type=draft.order_type,
+            quantity=draft.quantity,
+            status=draft.status,
+            payload={
+                "source": "trade_screen",
+                "mode": "draft_only",
+            },
+        )
+
+        try:
+            self.journal.log_info(
+                "order_draft_saved",
+                "Черновик ордера сохранён.",
+                {
+                    "symbol": draft.symbol,
+                    "side": draft.side,
+                    "order_type": draft.order_type,
+                    "quantity": draft.quantity,
+                    "status": draft.status,
+                },
+            )
+        except Exception:
+            pass
+
+    def list_recent_drafts(self, limit: int = 5) -> list[dict[str, str]]:
+        return self.repository.list_recent_drafts(limit=limit)