README: license section with as-is / no-liability disclaimer

README.md

@@ -94,3 +94,18 @@ issue #32).
 Gitea Actions workflow at `.gitea/workflows/ci.yml`:
 - On push to main: `go vet` + `go test`
 - On tags: build and push Docker image to `git.archfox.org/poslop/palette`
+
+## License
+
+Palette is licensed under the GNU Affero General Public License v3.0
+(AGPL-3.0-only). See [LICENSE](LICENSE).
+
+The software is provided AS IS, without warranty of any kind, express or
+implied, including merchantability and fitness for a particular purpose.
+In no event shall the authors be liable for any claim, damages, or other
+liability, including without limitation any security vulnerabilities,
+data loss, or legal issues arising from use of the software. You use it
+at your own risk.
+
+If you run a modified version of Palette as a network service, the AGPL
+requires you to offer your modified source code to its users.