Revert "Redesign finance dashboard with period summaries"

This reverts commit 8d41956d88.

backend/app/routers/finance.py

@@ -11,7 +11,6 @@ from sqlalchemy.orm import Session
 from app.database import get_db
 from app.services.finance_service import (
     compute_daily_summary,
-    get_finance_summary,
     get_or_create_daily_summary,
     overwrite_daily_summary,
     today_shanghai,
@@ -54,26 +53,6 @@ def daily_summary(
     return get_or_create_daily_summary(db, target)
 
 
-@router.get("/summary")
-def finance_summary(
-    period: str = Query("day", description="day | week | month"),
-    date: str | None = Query(None, description="YYYY-MM-DD, defaults to yesterday Asia/Shanghai"),
-    db: Session = Depends(get_db),
-    _: Any = Depends(get_current_user),
-) -> dict:
-    """Return finance summary for day/week/month.
-
-    day reuses the existing daily snapshot behavior. week/month aggregate only
-    stored finance_daily_summaries rows and never call upstream services.
-    """
-    period = period.lower()
-    if period not in {"day", "week", "month"}:
-        raise HTTPException(400, f"Invalid period: {period!r}. Expected day, week, or month.")
-    target = _resolve_date(date)
-    _validate_not_future(target)
-    return get_finance_summary(db, period, target)
-
-
 @router.post("/daily-summary/compare")
 def compare_daily_summary(
     date: str | None = Query(None, description="YYYY-MM-DD, defaults to yesterday Asia/Shanghai"),