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/budget.py

@@ -0,0 +1,45 @@
+from decimal import Decimal
+
+from pydantic import BaseModel, Field
+
+
+class BudgetCreate(BaseModel):
+    category_id: int
+    monthly_limit: Decimal = Field(gt=0)
+
+
+class BudgetUpdate(BaseModel):
+    monthly_limit: Decimal = Field(gt=0)
+
+
+class BudgetRead(BaseModel):
+    id: int
+    category_id: int
+    category_name: str
+    category_color: str
+    category_icon: str | None
+    monthly_limit: Decimal
+
+
+class BudgetStatus(BaseModel):
+    """One budgeted category's actual spend for a given month, compared
+    against its limit."""
+
+    budget_id: int
+    category_id: int
+    category_name: str
+    category_color: str
+    category_icon: str | None
+    monthly_limit: Decimal
+    spent: Decimal
+    remaining: Decimal
+    # Can exceed 100 — the UI clamps the progress bar fill, not this number,
+    # so "spent 150% of budget" is still visible in the raw value.
+    percent: float
+    is_over_budget: bool
+
+
+class BudgetStatusResponse(BaseModel):
+    year: int
+    month: int
+    items: list[BudgetStatus]