docs: update contributors list [contributors-updated]

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: julienld

README.md

@@ -312,6 +312,8 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 - **[@gcormier](https://github.com/gcormier)** — Windows installer improvements: removed unused variable and fixed terminal closing after install.
 - **[@ekobres](https://github.com/ekobres)** — Feature flags for `HAMCP_ENABLE_FILESYSTEM_TOOLS` and `HAMCP_ENABLE_CUSTOM_COMPONENT_INTEGRATION` in the add-on config, with beta tagging in source and docs.
 - **[@w3z315](https://github.com/w3z315)** — Financial support via [GitHub Sponsors](https://github.com/sponsors/julienld). Thank you! ☕
+- **[@griffinmartin](https://github.com/griffinmartin)** — Added OpenCode (by Anomaly) as a selectable AI client in the setup wizard, with both stdio and streamable HTTP support.
+- **[@hhopke](https://github.com/hhopke)** — Fixed addon API calls to route through HA Core ingress proxy instead of direct container connections, fixing `ha_manage_addon` proxy mode on addon installs.
 
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