add fish config

fish/functions/jpg2png.fish

@@ -0,0 +1,26 @@
+function jpg2png --description "Convert a JPG image from URL to PNG format"
+    if test (count $argv) -ne 2
+        echo "Usage: jpg2png <source_url> <destination_path>"
+        return 1
+    end
+    
+    set source $argv[1]
+    set destination $argv[2]
+    
+    set temp_jpg (mktemp --suffix=.jpg)
+    
+    if not wget -O $temp_jpg $source 2>&1
+        echo "Error: Failed to download JPG from $source"
+        rm -f $temp_jpg
+        return 1
+    end
+    
+    if not magick $temp_jpg $destination
+        echo "Error: Failed to convert JPG to PNG"
+        rm -f $temp_jpg
+        return 1
+    end
+    
+    rm -f $temp_jpg
+    echo "Successfully converted and saved to $destination"
+end