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models.py

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+"""
+Database models for Evolution Todo API.
+
+Task: 1.2
+Spec: specs/database/schema.md
+"""
+from sqlmodel import SQLModel, Field
+from datetime import datetime
+from typing import Optional
+
+
+class User(SQLModel, table=True):
+    """User model (managed by Better Auth)."""
+    __tablename__ = "users"
+
+    id: str = Field(primary_key=True)
+    email: str = Field(unique=True, index=True, max_length=255)
+    name: str = Field(max_length=255)
+    password_hash: str = Field(max_length=255)
+    created_at: datetime = Field(default_factory=datetime.utcnow)
+    updated_at: datetime = Field(default_factory=datetime.utcnow)
+
+
+class Task(SQLModel, table=True):
+    """Task model for todo items."""
+    __tablename__ = "tasks"
+
+    id: Optional[int] = Field(default=None, primary_key=True)
+    user_id: str = Field(foreign_key="users.id", index=True)
+    title: str = Field(min_length=1, max_length=200)
+    description: Optional[str] = Field(default=None)
+    completed: bool = Field(default=False)
+    created_at: datetime = Field(default_factory=datetime.utcnow)
+    updated_at: datetime = Field(default_factory=datetime.utcnow)