feat: Dialog UX Improvements - Scrollable Body & Click-Proof! 🎯

## ✅ 1 & 2: Dialog Improvements

### Scrollable Body with Fixed Header/Footer
**Problem:** Long content made header/footer disappear
**Solution:**
- Changed dialog to flexbox layout
- Added DialogBody component with overflow-y-auto
- Header and footer fixed with borders
- Max height 90vh

**Structure:**
```tsx
<DialogContent> (flex flex-col max-h-[90vh])
  <DialogHeader> (px-6 pt-6 pb-4 border-b)
  <DialogBody> (flex-1 overflow-y-auto px-6 py-4)
  <DialogFooter> (px-6 py-4 border-t mt-auto)
</DialogContent>
```

### Close-Proof (No Outside Click)
**Problem:** Accidental outside clicks closed dialog
**Solution:**
- Added onPointerDownOutside preventDefault
- Added onInteractOutside preventDefault
- Must click X or Cancel to close
- No confusion or lost UI control

**Files:**
- `components/ui/dialog.tsx`
- `components/ui/rich-text-editor.tsx`

Ready for remaining improvements!

admin-spa/src/components/ui/dialog.tsx

@@ -35,14 +35,16 @@ const DialogContent = React.forwardRef<
     <DialogOverlay />
     <DialogPrimitive.Content
       ref={ref}
+      onPointerDownOutside={(e) => e.preventDefault()}
+      onInteractOutside={(e) => e.preventDefault()}
       className={cn(
-        "fixed left-[50%] top-[50%] z-[99999] grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+        "fixed left-[50%] top-[50%] z-[99999] flex flex-col w-full max-w-lg max-h-[90vh] translate-x-[-50%] translate-y-[-50%] border bg-background shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
         className
       )}
       {...props}
     >
       {children}
-      <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground">
+      <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground z-10">
         <X className="h-4 w-4" />
         <span className="sr-only">Close</span>
       </DialogPrimitive.Close>
@@ -57,7 +59,7 @@ const DialogHeader = ({
 }: React.HTMLAttributes<HTMLDivElement>) => (
   <div
     className={cn(
-      "flex flex-col space-y-1.5 text-center sm:text-left",
+      "flex flex-col space-y-1.5 text-center sm:text-left px-6 pt-6 pb-4 border-b",
       className
     )}
     {...props}
@@ -71,7 +73,7 @@ const DialogFooter = ({
 }: React.HTMLAttributes<HTMLDivElement>) => (
   <div
     className={cn(
-      "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
+      "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2 px-6 py-4 border-t mt-auto",
       className
     )}
     {...props}
@@ -106,6 +108,20 @@ const DialogDescription = React.forwardRef<
 ))
 DialogDescription.displayName = DialogPrimitive.Description.displayName
 
+const DialogBody = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex-1 overflow-y-auto px-6 py-4",
+      className
+    )}
+    {...props}
+  />
+)
+DialogBody.displayName = "DialogBody"
+
 export {
   Dialog,
   DialogPortal,
@@ -117,4 +133,5 @@ export {
   DialogFooter,
   DialogTitle,
   DialogDescription,
+  DialogBody,
 }

admin-spa/src/components/ui/rich-text-editor.tsx

@@ -25,7 +25,7 @@ import { Button } from './button';
 import { Input } from './input';
 import { Label } from './label';
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from './select';
-import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from './dialog';
+import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle, DialogBody } from './dialog';
 import { __ } from '@/lib/i18n';
 
 interface RichTextEditorProps {
@@ -327,7 +327,8 @@ export function RichTextEditor({
             </DialogDescription>
           </DialogHeader>
           
-          <div className="space-y-4 py-4">
+          <DialogBody>
+            <div className="space-y-4">
               <div className="space-y-2">
                 <Label htmlFor="btn-text">{__('Button Text')}</Label>
                 <Input
@@ -374,6 +375,7 @@ export function RichTextEditor({
                 </Select>
               </div>
             </div>
+          </DialogBody>
           
           <DialogFooter>
             <Button variant="outline" onClick={() => setButtonDialogOpen(false)}>