feat(reuse): add REUSE 3.3 license compliance

- Download LICENSES/MIT.txt using canonical SPDX text
- Download LICENSES/GPL-2.0-only.txt and LICENSES/Classpath-exception-2.0.txt
  for JNI header files (Oracle, GPL-2.0-only WITH Classpath-exception-2.0)
- Create REUSE.toml annotating markdown, YAML, XML, and text files
  with MIT license and dual copyright (Konstantin Heurer 2023-2025,
  Bernard Ladenthin 2026), plus JNI headers with Oracle copyright and
  dockcross scripts without file extensions
- Add SPDX headers to all Java/C++ source files, workflow YAMLs,
  pom.xml, .gitignore, and other config files
- reuse lint passes: 133/133 files with copyright and license info

https://claude.ai/code/session_012tV3BMrzDe7ig8itbdSbvZ

Author: claude

.clang-format

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 ---
 Language:        Cpp
 # BasedOnStyle:  LLVM

.clang-tidy

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 ---
 Checks: >
     bugprone-*,

.editorconfig

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 # https://editorconfig.org
 root = true
 

.github/FUNDING.yml

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 # Sponsorship configuration for github.com/bernardladenthin.
 # Uncomment any line below to advertise a funding channel on the repository.
 # All lines are intentionally disabled by default.

.github/ISSUE_TEMPLATE/config.yml

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 blank_issues_enabled: false
 contact_links:
   - name: Security vulnerability

.github/build.bat

@@ -1,3 +1,8 @@
+REM SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+REM SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+REM
+REM SPDX-License-Identifier: MIT
+
 @echo off
 
 mkdir build

.github/build.sh

@@ -1,5 +1,10 @@
 #!/bin/bash
 
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 mkdir -p build
 cmake -Bbuild $@ || exit 1
 cmake --build build --config Release -j$(nproc) || exit 1

.github/build_cuda_linux.sh

@@ -1,5 +1,10 @@
 #!/bin/sh
 
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 # A Cuda 13.2 install script for RHEL8/Rocky8/Manylinux_2.28
 # Available versions can be found at:
 # https://developer.download.nvidia.com/compute/cuda/repos/rhel8/x86_64/

.github/dependabot.yml

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 version: 2
 updates:
   - package-ecosystem: "maven"

.github/dockcross/update.sh

@@ -1,5 +1,10 @@
 #!/bin/bash
 
+# SPDX-FileCopyrightText: 2023-2026 Bernard Ladenthin <bernard.ladenthin@gmail.com>
+# SPDX-FileCopyrightText: 2023-2026 Konstantin Heurer
+#
+# SPDX-License-Identifier: MIT
+
 # This script prints the commands to upgrade the docker cross compilation scripts
 docker run --rm dockcross/manylinux2014-x64  > ./dockcross-manylinux2014-x64
 docker run --rm dockcross/manylinux_2_28-x64  > ./dockcross-manylinux_2_28-x64