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/recurring.py

@@ -0,0 +1,58 @@
+from datetime import date as date_
+from decimal import Decimal
+
+from pydantic import BaseModel, Field
+
+from app.models.enums import RecurringFrequency, TransactionType
+
+
+class RecurringTransactionCreate(BaseModel):
+    account_id: int
+    category_id: int | None = None
+    transfer_account_id: int | None = None
+    type: TransactionType
+    amount: Decimal = Field(gt=0)
+    description: str = Field(min_length=1, max_length=255)
+    merchant: str | None = None
+    notes: str | None = None
+    frequency: RecurringFrequency
+    anchor_date: date_
+
+
+class RecurringTransactionUpdate(BaseModel):
+    account_id: int | None = None
+    category_id: int | None = None
+    transfer_account_id: int | None = None
+    type: TransactionType | None = None
+    amount: Decimal | None = Field(default=None, gt=0)
+    description: str | None = Field(default=None, min_length=1, max_length=255)
+    merchant: str | None = None
+    notes: str | None = None
+    frequency: RecurringFrequency | None = None
+    anchor_date: date_ | None = None
+    is_active: bool | None = None
+
+
+class RecurringTransactionRead(BaseModel):
+    id: int
+    account_id: int
+    account_name: str
+    category_id: int | None
+    category_name: str | None
+    category_color: str | None
+    category_icon: str | None
+    transfer_account_id: int | None
+    transfer_account_name: str | None
+    type: TransactionType
+    amount: Decimal
+    description: str
+    merchant: str | None
+    notes: str | None
+    frequency: RecurringFrequency
+    anchor_date: date_
+    last_posted_date: date_ | None
+    is_active: bool
+    # Computed, not stored — see services/recurring_service.py.
+    next_due_date: date_
+    is_due: bool
+    days_until_due: int