Update README files across configuration directories to enhance navigation and clarity

- Added "You are here" sections to various README files in the config directory, improving user orientation.
- Updated links in the main README to reflect new structure and provide direct access to configuration readmes.
- Enhanced descriptions in the automation, packages, scenes, scripts, and sounds directories for better usability.
https://github.com/CCOSTAN/Home-AssistantConfig/pull/1535

README.md

@@ -19,8 +19,9 @@
 Live, personal Home Assistant configuration shared for **browsing and inspiration**. This is not a turnkey clone-and-run setup; borrow ideas, adapt entity IDs/secrets, and test in your own environment.
 
 ### Quick navigation
+- You are here: `/` (root repo guide)
 - [Blog](https://www.vcloudinfo.com) | [Issues](https://github.com/CCOSTAN/Home-AssistantConfig/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc) | [Diagram](config/www/custom_ui/floorplan/images/branding/Bear-Stone-Docker-Diagram.jpg) | [YouTube](https://youtube.com/vCloudInfo)
-- Config highlights: `config/packages`, `config/automation`, `config/script`, `config/scene`, `config/templates`, `config/www`
+- Config readmes: [Config index](config/README.md) | [Packages](config/packages/README.md) | [Automations](config/automation/README.md) | [Scripts](config/script/README.md) | [Scenes](config/scene/README.md) | [Sounds](config/sounds/README.md) | [Package triggers](config/packages/triggers/README.md)
 - Gear & affiliate catalog: see `legacy-readme.md` (full device list with links)
 
 ![Home Assistant header](https://i.imgur.com/vjDH1LJ.png)