chore!: relicense edify from Apache 2.0 to MIT (#273)

Relicenses edify from Apache 2.0 to the MIT License across every
artifact that names or ships it. Sole-copyright-holder relicense — no
CLA sweep needed.

## Landings

- **`LICENSE`** — the Apache 2.0 text is replaced with the standard MIT
text, copyright line `Copyright (c) 2022-2026 Bobby` frozen as a static
literal through the first MIT release.
- **`pyproject.toml`** — the SPDX `license = "…"` field switches from
`Apache-2.0` to `MIT`. `license-files = ["LICENSE"]` continues to attach
the license file to the wheel and sdist via hatchling's Core Metadata
2.4 emission.
- **`README.rst`** — the license section reads "MIT License" and
continues to link the repo's `LICENSE`. The shields.io license badge
reads its label from PyPI metadata, so no manual badge edit is needed.
- **`tests/license.test.py`** — two acceptance tests that read the
installed edify metadata via `importlib.metadata`: `License-Expression
== "MIT"` and `Apache` does not appear in any classifier. Guards against
silent backslide in a future dependency update.

The `License :: OSI Approved :: Apache Software License` classifier has
already been absent from `pyproject.toml`'s `classifiers` list since the
toolchain migration; the second acceptance test above pins that state
going forward.

Closes #231
Closes #232
Closes #233
Closes #234
Closes #237

4 files changed, 39 insertions, 203 deletions

diff --git a/LICENSE b/LICENSE
index 261eeb9..dab8e34 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,201 +1,21 @@
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+MIT License
+
+Copyright (c) 2022-2026 Bobby
+
+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.
diff --git a/README.rst b/README.rst
index e795fb5..e38d341 100644
--- a/README.rst
+++ b/README.rst
@@ -257,7 +257,7 @@ Edify turns those complex and unwieldy regexes that appear in code reviews into
 License & Contributing
 ======================
 
-This project is licensed under `Apache Software License 2.0 <https://github.com/luciferreeves/edify/blob/main/LICENSE>`_. See `Contributing Guidelines <https://github.com/luciferreeves/edify/blob/main/CONTRIBUTING.rst>`_ for information on how to contribute to this project.
+This project is licensed under the `MIT License <https://github.com/luciferreeves/edify/blob/main/LICENSE>`_. See `Contributing Guidelines <https://github.com/luciferreeves/edify/blob/main/CONTRIBUTING.rst>`_ for information on how to contribute to this project.
 
 Contributors
 ------------
diff --git a/pyproject.toml b/pyproject.toml
index 9243650..f64d263 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ name = "edify"
 description = "Regular Expressions Made Simple"
 readme = "README.rst"
 requires-python = ">=3.11"
-license = "Apache-2.0"
+license = "MIT"
 license-files = ["LICENSE"]
 authors = [
     { name = "Bobby", email = "[email protected]" },
diff --git a/tests/license.test.py b/tests/license.test.py
new file mode 100644
index 0000000..e46a01e
--- /dev/null
+++ b/tests/license.test.py
@@ -0,0 +1,16 @@
+"""Acceptance tests pinning the license shape recorded in the installed edify metadata."""
+
+from importlib.metadata import metadata
+
+
+def test_installed_edify_metadata_declares_mit_license_expression():
+    edify_metadata = metadata("edify")
+    license_expression = edify_metadata.get("License-Expression")
+    assert license_expression == "MIT"
+
+
+def test_installed_edify_metadata_carries_no_apache_license_classifier():
+    edify_metadata = metadata("edify")
+    classifiers = edify_metadata.get_all("Classifier") or []
+    apache_classifiers = [c for c in classifiers if "Apache" in c]
+    assert apache_classifiers == []