chore: include authentication services

app/migrations.py

@@ -0,0 +1,22 @@
+"""Small, dependency-free schema migrations for the deployed SQLite database."""
+from sqlalchemy import inspect, text
+
+from .extensions import db
+
+
+def upgrade_schema() -> None:
+    """Create new tables and add authentication columns without losing existing data."""
+    db.create_all()
+    inspector = inspect(db.engine)
+    columns = {item["name"] for item in inspector.get_columns("users")}
+    additions = {
+        "email": "VARCHAR(254)",
+        "email_verified_at": "DATETIME",
+        "is_active_account": "BOOLEAN NOT NULL DEFAULT 0",
+        "auth_version": "INTEGER NOT NULL DEFAULT 1",
+    }
+    for name, sql_type in additions.items():
+        if name not in columns:
+            db.session.execute(text(f"ALTER TABLE users ADD COLUMN {name} {sql_type}"))
+    db.session.execute(text("CREATE UNIQUE INDEX IF NOT EXISTS ix_users_email_unique ON users (email) WHERE email IS NOT NULL"))
+    db.session.commit()