Initial public release

Aurum — a self-hosted personal finance operating system: cash flow,
net worth tracking, budgets, goals, recurring payments, reports,
proactive alerts, and a compound-interest returns calculator, all
bilingual (RU/EN) and mobile-first. Ships as a three-container Docker
Compose stack (Postgres + FastAPI + nginx-served React frontend).

See README.md for setup and CONTRIBUTING.md for development.

backend/app/schemas/reports.py

@@ -0,0 +1,40 @@
+from datetime import date as date_
+from decimal import Decimal
+
+from pydantic import BaseModel
+
+
+class CategorySpendingPoint(BaseModel):
+    year: int
+    month: int
+    amount: Decimal
+
+
+class CategorySpendingReport(BaseModel):
+    category_id: int
+    category_name: str
+    category_color: str
+    category_icon: str | None
+    start_date: date_ | None
+    end_date: date_ | None
+    total_amount: Decimal
+    transaction_count: int
+    average_per_month: Decimal
+    series: list[CategorySpendingPoint]
+
+
+class CategoryRankingItem(BaseModel):
+    category_id: int
+    name: str
+    color: str
+    icon: str | None
+    amount: Decimal
+    percent: float
+    transaction_count: int
+
+
+class CategoryRankingReport(BaseModel):
+    start_date: date_ | None
+    end_date: date_ | None
+    total_amount: Decimal
+    items: list[CategoryRankingItem]