feat: enhance project data handling with new Jinja filters and update UI labels for clarity

backend/routers/projects.py

@@ -2851,17 +2851,20 @@ async def upload_all_project_data(
         Determine the grouping key for a file path.
         Files inside Auto_####/Auto_Leq/ or Auto_####/Auto_Lp_01/ are collapsed
         up to their Auto_#### parent so they all land in the same session.
+        Only folder components are examined (not the filename, which is parts[-1]).
         """
-        # Find the deepest Auto_#### component (case-insensitive)
+        # Only look at folder components — exclude the filename (last part)
+        folder_parts = parts[:-1]
         auto_idx = None
-        for i, p in enumerate(parts):
-            if p.lower().startswith("auto_") and not p.lower().startswith("auto_leq") and not p.lower().startswith("auto_lp"):
+        for i, p in enumerate(folder_parts):
+            p_lower = p.lower()
+            if p_lower.startswith("auto_") and not p_lower.startswith("auto_leq") and not p_lower.startswith("auto_lp"):
                 auto_idx = i
         if auto_idx is not None:
             # Group key = everything up to and including Auto_####
-            return "/".join(parts[:auto_idx + 1])
+            return "/".join(folder_parts[:auto_idx + 1])
         # Fallback: use the immediate parent folder
-        return "/".join(parts[:-1]) if len(parts) > 1 else ""
+        return "/".join(folder_parts) if folder_parts else ""
 
     # --- Group files by session key ---
     groups: dict[str, list[tuple[str, bytes]]] = defaultdict(list)