Added modals for popups, and fixed root-level bug.

Backend/Main.py

@@ -23,7 +23,7 @@ from Auth import (
 )
 from BookReader import ReadBookForFile
 from Blame import LoadBlame, RenameUserInBlame, UpdateBlameOnSave
-from Core import ResolvePath
+from Core import NormalizeRelativePath, ResolvePath
 from Embeds import BuildOgTags
 from Editor import WriteTextFile
 from Explorer import (
@@ -440,10 +440,11 @@ def PatchTreeEndpoint(
 ) -> dict:
     RequirePathAccessible(Root, Path, CurrentUser)
 
+    ParentPath = Path.rsplit("/", 1)[0] if "/" in Path else ""
+
     if Body.DestinationPath:
-        Destination = Body.DestinationPath
+        Destination = NormalizeRelativePath(ParentPath, Body.DestinationPath)
     elif Body.NewName:
-        ParentPath = Path.rsplit("/", 1)[0] if "/" in Path else ""
         Destination = f"{ParentPath}/{Body.NewName}" if ParentPath else Body.NewName
     else:
         raise HTTPException(status_code=400, detail="Provide NewName or DestinationPath.")