Initial commit: AutonetSellCar platform with deployment system

- Frontend: Next.js 14 with TypeScript
- Backend: FastAPI with SQLAlchemy
- Agent: Carmodoo sync agent
- Deployment: Docker Compose based staging/production setup
- Scripts: Automated deployment with rollback support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/app/schemas/settings.py

@@ -0,0 +1,37 @@
+from pydantic import BaseModel
+from typing import Optional
+from datetime import datetime
+
+
+class SystemSettingsUpdate(BaseModel):
+    """시스템 설정 수정용 스키마"""
+    search_page_size: Optional[int] = None
+    korea_margin_percent: Optional[float] = None
+    mongolia_margin_percent: Optional[float] = None
+    cc_per_usdc: Optional[int] = None
+    cc_per_view: Optional[int] = None
+    cc_signup_bonus: Optional[int] = None
+    cars_per_cc: Optional[int] = None
+    cache_ttl_hours: Optional[int] = None
+    container_logistics_usd: Optional[int] = None
+    shoring_cost_usd: Optional[int] = None
+
+
+class SystemSettingsResponse(BaseModel):
+    """시스템 설정 응답 스키마"""
+    id: int
+    search_page_size: int
+    korea_margin_percent: float
+    mongolia_margin_percent: float
+    cc_per_usdc: int
+    cc_per_view: int
+    cc_signup_bonus: int
+    cars_per_cc: int
+    cache_ttl_hours: int
+    container_logistics_usd: int
+    shoring_cost_usd: int
+    created_at: Optional[datetime] = None
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True