Add MIT licence

Declared with the PEP 639 license / license-files fields, so the text ships in
the wheel and the image rather than only the repository. Records the terms of
the two things this repository deliberately does not contain: Boxsim, which is
Visaton freeware and is never redistributed, and kicad-visaton-lib, which is
CC-BY-SA-4.0 and is copied into any image built by tools/build-image.sh.

Verified: pip install exposes License-Expression MIT and packages the text as
dist-info/licenses/LICENSE, both on the host and in the image.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitignore

@@ -8,3 +8,5 @@ brute
 .claude/
 __pycache__/
 *.ini
+build/
+dist/

Dockerfile

@@ -17,7 +17,7 @@ LABEL org.opencontainers.image.title="boxsim" \
 
 WORKDIR /opt/boxsim
 
-COPY pyproject.toml README.md ./
+COPY pyproject.toml README.md LICENSE ./
 COPY boxsim ./boxsim
 
 # Staged by tools/build-image.sh: the upgraded Visaton symbol library and the

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Marco Grätsch
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -158,4 +158,9 @@ Tests needing KiCad or the Boxsim distribution skip themselves when those are ab
 
 ## Licence
 
-MIT.
+MIT, see [LICENSE](LICENSE).
+
+Two things this repository deliberately does not contain, and their terms if you assemble them yourself:
+
+- `Boxsim.exe` and the Boxsim distribution are Visaton freeware. Only the development-only oracle touches the binary, and no part of it is redistributed here or in the image.
+- [kicad-visaton-lib](https://src.bundespruefstelle.ch/magdev/kicad-visaton-lib) is CC-BY-SA-4.0. `tools/build-image.sh` copies it into the image it builds, so an image you publish carries that licence alongside this one.

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=68"]
+requires = ["setuptools>=77"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -8,7 +8,8 @@ version = "0.1.0"
 description = "Read Boxsim loudspeaker projects and generate KiCad projects from their crossovers"
 readme = "README.md"
 requires-python = ">=3.11"
-license = { text = "MIT" }
+license = "MIT"
+license-files = ["LICENSE"]
 authors = [{ name = "Marco Grätsch", email = "magdev3.0@gmail.com" }]
 keywords = ["boxsim", "visaton", "kicad", "loudspeaker", "crossover"]
 dependencies = []