feat: add UI components for alert dialog, badge, checkbox, dialog, label, select, sheet, table, textarea

- Implemented AlertDialog component with overlay, content, header, footer, title, description, action, and cancel functionalities.
- Created Badge component with variant support for different styles.
- Developed Checkbox component with custom styling and indicator.
- Added Dialog component with trigger, close, overlay, content, header, footer, title, and description.
- Introduced Label component for form elements.
- Built Select component with trigger, content, group, item, label, separator, and scroll buttons.
- Created Sheet component with trigger, close, overlay, content, header, footer, title, and description.
- Implemented Table component with header, body, footer, row, head, cell, and caption.
- Added Textarea component with custom styling.
- Established API service for game management with CRUD operations and metadata search functionalities.
- Updated dependencies in package lock files.

.agents/skills/shadcn/agents/openai.yml

@@ -0,0 +1,5 @@
+interface:
+  display_name: "shadcn/ui"
+  short_description: "Manages shadcn/ui components — adding, searching, fixing, debugging, styling, and composing UI."
+  icon_small: "./assets/shadcn-small.png"
+  icon_large: "./assets/shadcn.png"