feat(demo): add DeesDemoWrapper component for enhanced demo element handling

readme.plan.md

@@ -1,4 +1,4 @@
-# Fix Properties Panel Element Detection
+# Fix Properties Panel Element Detection (COMPLETED)
 
 To fix the element detection issue, reread CLAUDE.md first.
 
@@ -10,21 +10,32 @@ The properties panel has timing issues detecting rendered elements because:
 
 ## Implementation Plan
 
-### 1. Add proper synchronization
+### 1. Add proper synchronization ✅
 - Add a delay or await render completion before element detection
 - Use MutationObserver or lit's updateComplete promises
 
-### 2. Improve element search algorithm
+### 2. Improve element search algorithm ✅
 - Search recursively through all descendants, not just direct children
 - Handle shadow DOM boundaries properly
 - Support elements wrapped in containers
 
-### 3. Add retry mechanism
+### 3. Add retry mechanism ✅
 - If element not found, retry after a delay
 - Add maximum retry attempts to prevent infinite loops
 - Clear error state when element is eventually found
 
 ## Code Changes Required
-1. Modify `wcc-properties.ts` createProperties() method
-2. Add element search utility function
-3. Improve error handling and user feedback
+1. Modify `wcc-properties.ts` createProperties() method ✅
+2. Add element search utility function ✅
+3. Improve error handling and user feedback ✅
+
+# Demo Wrapper Implementation (COMPLETED)
+
+## Created DeesDemoWrapper Component
+- Location: ts_demotools/demotools.ts
+- Allows wrapping demo elements with post-render functionality
+- Provides runAfterRender callback that receives the rendered element
+- Uses display: contents to not affect layout
+- Handles timing automatically with 50ms delay after firstUpdated
+- Supports both sync and async callbacks
+- Exports available at @design.estate/dees-wcctools/demoTools