feat(cursorrules): updated cursorrules and claude md file (#2640)

* feat(cursorrules): updated cursorrules and claude md file

* added rules for adding new integrations

.cursor/rules/emcn-components.mdc

@@ -1,45 +1,35 @@
 ---
-description: EMCN component library patterns with CVA
+description: EMCN component library patterns
 globs: ["apps/sim/components/emcn/**"]
 ---
 
-# EMCN Component Guidelines
+# EMCN Components
 
-## When to Use CVA vs Direct Styles
+Import from `@/components/emcn`, never from subpaths (except CSS files).
 
-**Use CVA (class-variance-authority) when:**
-- 2+ visual variants (primary, secondary, outline)
-- Multiple sizes or state variations
-- Example: Button with variants
+## CVA vs Direct Styles
 
-**Use direct className when:**
-- Single consistent style
-- No variations needed
-- Example: Label with one style
+**Use CVA when:** 2+ variants (primary/secondary, sm/md/lg)
 
-## Patterns
-
-**With CVA:**
 ```tsx
 const buttonVariants = cva('base-classes', {
-  variants: { 
-    variant: { default: '...', primary: '...' },
-    size: { sm: '...', md: '...' }
-  }
+  variants: { variant: { default: '...', primary: '...' } }
 })
 export { Button, buttonVariants }
 ```
 
-**Without CVA:**
+**Use direct className when:** Single consistent style, no variations
+
 ```tsx
 function Label({ className, ...props }) {
-  return <Primitive className={cn('single-style-classes', className)} {...props} />
+  return <Primitive className={cn('style-classes', className)} {...props} />
 }
 ```
 
 ## Rules
+
 - Use Radix UI primitives for accessibility
 - Export component and variants (if using CVA)
 - TSDoc with usage examples
 - Consistent tokens: `font-medium`, `text-[12px]`, `rounded-[4px]`
-- Always use `transition-colors` for hover states
+- `transition-colors` for hover states