feat: add Pa11y accessibility testing + migrate GitHub refs to Gitea

- Add Pa11y CI config template (templates/configs/pa11yci.json)
- Replace all github.com/mokoconsulting-tech with git.mokoconsulting.tech/MokoConsulting
- Update .moko-standards governance file

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/MANUAL_DEPLOYMENT.md

@@ -12,7 +12,7 @@ This guide explains how to manually deploy the MokoCassiopeia template from the
 
 ## Overview
 
-**Important**: The `src` directory in this repository is the development source, not a ready-to-install package. For production use, we recommend using the packaged ZIP file from [Releases](https://github.com/mokoconsulting-tech/MokoCassiopeia/releases).
+**Important**: The `src` directory in this repository is the development source, not a ready-to-install package. For production use, we recommend using the packaged ZIP file from [Releases](https://git.mokoconsulting.tech/MokoConsulting/MokoCassiopeia/releases).
 
 However, for development or testing purposes, you can manually deploy files from the `src` directory to your Joomla installation.
 
@@ -300,7 +300,7 @@ If you encounter issues with manual deployment:
 
 1. Check this troubleshooting guide first
 2. Review [Joomla's template documentation](https://docs.joomla.org/J4.x:Creating_a_Simple_Template)
-3. Open an issue on [GitHub](https://github.com/mokoconsulting-tech/MokoCassiopeia/issues)
+3. Open an issue on [GitHub](https://git.mokoconsulting.tech/MokoConsulting/MokoCassiopeia/issues)
 4. Contact: hello@mokoconsulting.tech
 
 ---