docs: behaviour docs + screenshots from the e2e run

README.md

@@ -1,5 +1,11 @@
 # Share Chat — Agent Zero Plugin
 
+<!-- BADGES:START (generated by the devkit — `make badges`) -->
+
+[![plugin-e2e](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/actions/workflows/plugin-e2e.yml/badge.svg?branch=main)](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/actions/workflows/plugin-e2e.yml) [![BDD scenarios](https://img.shields.io/badge/tests-BDD%20e2e-brightgreen)](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/tree/main/tests/e2e/features) [![Release](https://img.shields.io/github/v/tag/agent-zero-plugins/agent-zero-plugin-share-chat?label=release&sort=semver)](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/tags) [![License: Apache-2.0](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/blob/main/LICENSE) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/blob/main/CONTRIBUTING.md)
+
+<!-- BADGES:END -->
+
 [![plugin-e2e](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/actions/workflows/plugin-e2e.yml/badge.svg)](https://github.com/agent-zero-plugins/agent-zero-plugin-share-chat/actions/workflows/plugin-e2e.yml)
 License: [Apache-2.0](LICENSE)
 
@@ -114,4 +120,4 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for the workflow.
 
 ## License
 
-[Apache-2.0](LICENSE) © Interu
+[Apache-2.0](LICENSE) © Interu

docs/BEHAVIOUR.md

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+# Share Chat — behaviour
+
+<!-- GENERATED by the devkit (`make docs`) from this plugin's own e2e run.
+     Do not edit by hand: every screenshot below is the asserted end state of a
+     passing BDD scenario, so it cannot show behaviour the plugin no longer has.
+     Captions are the scenario titles verbatim — reword them in tests/e2e/features/. -->
+
+Each section is one scenario from `tests/e2e/features/`, with the screenshot the
+test captured at its final assertion. 3 of 3 scenarios have one.
+
+## Sharing a chat via a deep link
+
+### The share control is present in the chat
+<sub>BEH-1</sub>
+
+![The share control is present in the chat](screenshots/the-share-control-is-present-in-the-chat.png)
+
+### Sharing copies a link to this chat
+<sub>BEH-4, BEH-5</sub>
+
+![Sharing copies a link to this chat](screenshots/sharing-copies-a-link-to-this-chat.png)
+
+### Sharing confirms the link was copied
+<sub>BEH-7</sub>
+
+![Sharing confirms the link was copied](screenshots/sharing-confirms-the-link-was-copied.png)