HEUSOR SOFTWARE LICENCE

Copyright © 2026 Shiftmind Limited ("we", "us"). All rights reserved except as
granted below.

## 1. What this covers

This licence covers the `heusor` software package as distributed by us —
including its compiled native module (the "Engine") and its Python code — and
its documentation (together, the "Software").

## 2. What you may do

Subject to this licence, we grant you a worldwide, non-exclusive,
non-transferable, royalty-free licence to:

1. install and use the Software, for any purpose, **including commercial
   use**;
2. build, run and distribute your own applications that use the Software,
   provided the people who receive your application obtain the Software from
   us (for example from PyPI) or receive an unmodified copy of it together
   with this licence.

## 3. What you may not do

You may not, except where applicable law expressly allows it despite this
restriction:

1. reverse engineer, decompile or disassemble the Engine, or attempt to derive
   its source code;
2. modify the Engine, or distribute a modified copy of the Software;
3. distribute the Software on its own, sell it, rent it or sublicense it;
4. remove or alter any copyright, licence or third-party notice in the
   Software.

## 4. Third-party software

The Software includes third-party components under their own licences (MIT,
Apache-2.0 and others), listed with their licence texts in
`heusor/THIRD_PARTY_LICENSES.txt`. Those licences govern those components, and
nothing in this licence restricts rights they grant you.

## 5. Ownership

We, and our licensors, own the Software and all rights in it. This licence
gives you no right to our names, logos or trade marks.

## 6. Versions and changes

This licence applies to the version of the Software it accompanies. We may
offer later versions under different terms; that does not change the terms of
a version you already have.

## 7. No warranty

The Software is provided **"as is"**, without warranty of any kind, express
or implied, including fitness for a particular purpose and
non-infringement. You are responsible for checking that results produced with
the Software are suitable for your purpose — in particular for any decision
that affects people (for example staff rosters).

## 8. Limitation of liability

To the fullest extent permitted by law, we are not liable for any indirect,
incidental, special or consequential loss, or for loss of profit, revenue,
data or business, arising from the Software or this licence; and our total
liability arising from the Software or this licence is limited to £100.
Nothing in this licence limits liability that cannot be limited by law, such
as for death or personal injury caused by negligence, or for fraud.

## 9. Termination

This licence ends automatically if you breach it. On termination you must
stop using the Software and delete your copies. Sections 4, 5, 7, 8 and 10
survive termination.

## 10. Law

This licence is governed by the law of England and Wales, and its courts have
exclusive jurisdiction.

## 11. Contact

licensing@heusor.com — questions about this licence, and commercial terms.
