fix(effi-ocr): improve file search and show available files on error

effi-ocr-legacy/TOOL-OPENWEBUI.md

@@ -39,7 +39,8 @@ class Tools:
             file_path = self._find_file(image_path)
             
             if not file_path:
-                return "[ERROR] File not found: " + image_path + ". Use list_recent_files() to see available files."
+                available = self._list_files()
+                return "[ERROR] File not found: " + image_path + "\n\nAvailable files:\n" + available
             
             with open(file_path, 'rb') as f:
                 files = {'file': (os.path.basename(file_path), f)}
@@ -103,6 +104,20 @@ class Tools:
         except Exception as e:
             return "[ERROR] " + str(e)
 
+    def _list_files(self):
+        try:
+            files = []
+            for directory in [self.uploads_dir, self.host_uploads_dir]:
+                if os.path.exists(directory):
+                    files.extend(glob.glob(os.path.join(directory, "*")))
+            files = [f for f in files if os.path.isfile(f)]
+            if not files:
+                return "No files found"
+            files.sort(key=os.path.getmtime, reverse=True)
+            return "\n".join([os.path.basename(f) for f in files[:10]])
+        except:
+            return "Cannot list files"
+
     def _find_file(self, filename):
         filename = filename.strip().strip('"').strip("'")
         
@@ -119,11 +134,19 @@ class Tools:
         
         search_dirs = [d for d in [self.uploads_dir, self.host_uploads_dir] if os.path.exists(d)]
         
+        if not search_dirs:
+            return None
+        
         for directory in search_dirs:
             all_files = glob.glob(os.path.join(directory, "*"))
             for f in all_files:
-                basename = os.path.basename(f)
+                basename = os.path.basename(f).lower()
-                if basename.startswith(filename) or filename in basename:
+                search_name = filename.lower()
+                if search_name in basename:
+                    return f
+                parts = search_name.replace('.jpeg', '').replace('.jpg', '').replace('.png', '').split()
+                for part in parts:
+                    if len(part) > 3 and part in basename:
                         return f
         
         return None