Initial eth_hedge_sim: P0 market, auth UI, one-click deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/api/__init__.py

@@ -0,0 +1,8 @@
+from fastapi import APIRouter
+
+from .auth_routes import router as auth_router
+from .market import router as market_router
+
+router = APIRouter()
+router.include_router(auth_router)
+router.include_router(market_router)