:wrench: add asdf support

DEVELOPMENT.md

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+# Development
+
+## For local dev
+
+- Download [asdf](https://github.com/asdf-vm/asdf/releases) and put in into your `/usr/local/bin` folder.
+
+- Install Nodejs & Php
+
+```bash
+
+sudo apt -y install dirmngr gpg curl gawk
+
+asdf plugin add nodejs https://github.com/asdf-vm/asdf-nodejs.git
+asdf install nodejs 24.11.1
+node -v
+npm -v
+
+# https://github.com/asdf-community/asdf-php
+sudo apt -y install plocate
+asdf plugin add php https://github.com/asdf-community/asdf-php.git
+asdf install php 8.5.0
+php -v
+```

dashboard-v6/.tool-versions

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+nodejs 24.11.1