Add the MIT licence (closes #15)

LICENSE with the MIT text, the README naming MIT in its opening line and a
License section, and the licence field in package.json.

Model: opus-5-5

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 sneak
+
+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

@@ -1,14 +1,15 @@
 # smallwebwaf
 
-`smallwebwaf` is a simple, fast, logging web application firewall, written in Go
-by [@sneak](https://sneak.berlin), for people who host their own services. It
-runs inside the container of the one application it protects, between your
-reverse proxy (traefik) and the app: the app's Dockerfile builds `FROM` the
-`smallwebwaf` image, traefik sends the app's requests to `smallwebwaf` on port
-8080, and `smallwebwaf` passes them on to the app on `127.0.0.1:8081`. It needs
-no setting, and protects the app from the first request with defaults chosen for
-a service on the open internet. It keeps its state in memory and in JSON files
-you can read and edit, and writes a detailed JSON log line for every request.
+`smallwebwaf` is a simple, fast, logging web application firewall, MIT-licensed
+and written in Go by [@sneak](https://sneak.berlin), for people who host their
+own services. It runs inside the container of the one application it protects,
+between your reverse proxy (traefik) and the app: the app's Dockerfile builds
+`FROM` the `smallwebwaf` image, traefik sends the app's requests to
+`smallwebwaf` on port 8080, and `smallwebwaf` passes them on to the app on
+`127.0.0.1:8081`. It needs no setting, and protects the app from the first
+request with defaults chosen for a service on the open internet. It keeps its
+state in memory and in JSON files you can read and edit, and writes a detailed
+JSON log line for every request.
 
 Status: the first milestone is built
 (https://git.eeqj.de/sneak/smallwebwaf/issues/13). `smallwebwaf` passes each
@@ -431,7 +432,6 @@ so that they run in minimal containers.
 
 - Milestone 2: rate limits per client, the country lists and the image an app
   builds on (https://git.eeqj.de/sneak/smallwebwaf/issues/14).
-- The licence (https://git.eeqj.de/sneak/smallwebwaf/issues/15).
 - The rest of the design, in the order of the build order in
   [`SPEC.md`](SPEC.md).
 
@@ -442,6 +442,10 @@ so that they run in minimal containers.
   and misses, and why none was adopted.
 - [`REPO_POLICIES.md`](REPO_POLICIES.md): the policies this repository follows.
 
+## License
+
+MIT. See [`LICENSE`](LICENSE).
+
 ## Author
 
 [@sneak](https://sneak.berlin)

package.json

@@ -1,4 +1,5 @@
 {
+  "license": "MIT",
   "devDependencies": {
     "prettier": "3.8.1"
   }