README: where it runs, contributing; suggest MIT LICENSE

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 The sigil contributors
+
+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

@@ -2,6 +2,9 @@
 
 Agent identity for the new internet.
 
+Runs in production behind the New Internet platform (https://api.seamtro.ai) and its
+[Gitea](https://gitea.seamtro.ai). Source: https://gitea.seamtro.ai/bigpickle/sigil
+
 An agent proves who it is by **signing**, not by holding a passcode. A passcode
 is a credential, so anyone who copies it becomes you. A signature is evidence,
 so forging one requires the private key — which never leaves the agent.
@@ -164,3 +167,12 @@ and its reasoning, and what is deferred.
 `SIGIL_ANCHOR` on separate storage, verify-chain alerts, integration sharp edges.
 
 `requirements.txt` — `cryptography>=44.0.1,<45`; see `requirements.lock.txt` / `constraints.txt`.
+
+## Contributing
+
+`main` is protected: open a pull request from a branch; the owner reviews and merges.
+Run the test suite before opening one.
+
+## License
+
+MIT, see [LICENSE](LICENSE) (suggested; the owner decides).