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

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

backend/app/api/auth_routes.py

@@ -0,0 +1,36 @@
+from __future__ import annotations
+
+from typing import Annotated
+
+from fastapi import APIRouter, Depends, HTTPException, status
+
+from ..config import Settings, get_settings
+from .auth import LoginRequest, LoginResponse, issue_token, require_user
+
+router = APIRouter(prefix="/api/auth", tags=["auth"])
+
+
+@router.post("/login", response_model=LoginResponse)
+async def login(body: LoginRequest, settings: Annotated[Settings, Depends(get_settings)]) -> LoginResponse:
+    user_ok = body.username == settings.auth_username
+    pass_ok = body.password == settings.auth_password
+    if not (user_ok and pass_ok):
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="用户名或密码错误")
+    token, ttl = issue_token(body.username, settings)
+    return LoginResponse(
+        token=token,
+        username=body.username,
+        expires_in=ttl,
+        env_name=settings.env_name,
+        mode=settings.mode,
+    )
+
+
+@router.get("/me")
+async def me(username: Annotated[str, Depends(require_user)], settings: Annotated[Settings, Depends(get_settings)]) -> dict:
+    return {
+        "username": username,
+        "env_name": settings.env_name,
+        "mode": settings.mode,
+        "sim": settings.is_sim,
+    }