major claude changes

app/schemas/auth.py

@@ -0,0 +1,56 @@
+from marshmallow import Schema, fields, validate, EXCLUDE
+
+
+class LoginSchema(Schema):
+    """Validation schema for user login"""
+    class Meta:
+        unknown = EXCLUDE
+
+    username = fields.Str(
+        required=True,
+        validate=validate.Length(min=3, max=100),
+        error_messages={"required": "Username is required"}
+    )
+    password = fields.Str(
+        required=True,
+        validate=validate.Length(min=6, max=200),
+        error_messages={"required": "Password is required"}
+    )
+
+
+class RegisterSchema(Schema):
+    """Validation schema for user registration"""
+    class Meta:
+        unknown = EXCLUDE
+
+    username = fields.Str(
+        required=True,
+        validate=validate.Length(min=3, max=100),
+        error_messages={"required": "Username is required"}
+    )
+    password = fields.Str(
+        required=True,
+        validate=validate.Length(min=6, max=200),
+        error_messages={"required": "Password is required"}
+    )
+    email = fields.Email(
+        required=True,
+        error_messages={"required": "Email is required"}
+    )
+
+
+class ChangePasswordSchema(Schema):
+    """Validation schema for password change"""
+    class Meta:
+        unknown = EXCLUDE
+
+    new_password = fields.Str(
+        required=True,
+        validate=validate.Length(min=6, max=200),
+        error_messages={"required": "New password is required"}
+    )
+    password_confirm = fields.Str(
+        required=True,
+        validate=validate.Length(min=6, max=200),
+        error_messages={"required": "Password confirmation is required"}
+    )