add AI agents files

.opencode/skills/daisyui/components/join.md

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+### join
+Join is a container for grouping multiple items, it can be used to group buttons, inputs, etc. Join applies border radius to the first and last item. Join can be used to create a horizontal or vertical list of items
+
+[join docs](https://daisyui.com/components/join/)
+
+#### Class names
+- component: `join`, `join-item`
+- direction: `join-vertical`, `join-horizontal`
+
+#### Syntax
+```html
+<div class="join {MODIFIER}">{CONTENT}</div>
+```
+
+#### Rules
+- {MODIFIER} is optional and can have one of the direction class names
+- Any direct child of the join element will get joined together
+- Any element with `join-item` will be affected
+- Use `lg:join-horizontal` for responsive layouts