add HITL tool argument editing with approval UI

Enables users to edit tool call arguments before execution in human-in-the-loop
workflows. Adds edit mode UI with form fields, grayscale styling, and subtle
pulse animations for pending approvals. Backend stub enhanced to verify edited
arguments are correctly passed through.

surfsense_backend/app/agents/new_chat/tools/create_notion_page.py

@@ -1,3 +1,4 @@
+import hashlib
 from typing import Any
 
 from langchain_core.tools import tool
@@ -19,11 +20,19 @@ def create_create_notion_page_tool():
             title: The title of the Notion page.
             content: The markdown content for the page body.
         """
+        # Generate a unique page ID based on title for testing
+        # This helps verify if edited args were used
+        page_hash = hashlib.md5(title.encode()).hexdigest()[:8]
+        
+        # Return detailed response showing what was actually received
         return {
             "status": "success",
-            "page_id": "stub-page-id-12345",
+            "page_id": f"stub-page-{page_hash}",
             "title": title,
-            "url": "https://www.notion.so/stub-page-12345",
+            "content_preview": content[:100] + "..." if len(content) > 100 else content,
+            "content_length": len(content),
+            "url": f"https://www.notion.so/stub-page-{page_hash}",
+            "message": f"✅ Created Notion page '{title}' with {len(content)} characters",
         }
 
     return create_notion_page