fix: Invert summary length slider value for RTL - RTL slider: min=1 is RIGHT (طويل), max=3 is LEFT (قصير) - API expects: 1=short, 3=long - Fix: send (4 - value) to API so طويل→3 (long), قصير→1 (short)

src/index.html

@@ -1036,7 +1036,7 @@
           },
           body: JSON.stringify({
             text: text,
-            length: parseInt(lengthValue),
+            length: 4 - parseInt(lengthValue),
             full_text: isFullText
           })
         });