Translation needed for existing languages

@sumn2u has made changes on the original english version of the book (PR #331)

Visual Diff of Changes:

diff --git a/en/beginner-projects/weather-app.md b/en/beginner-projects/weather-app.md
index be53789..b77eb06 100644
--- a/en/beginner-projects/weather-app.md
+++ b/en/beginner-projects/weather-app.md
@@ -20,3 +20,13 @@ A simple app that fetches and displays weather information based on user locatio
 ## Bonus Challenge
 Add weather icons and background changes based on weather conditions.
 
+## Live Demo
+<div align="center">
+  <iframe
+    src="https://codesandbox.io/embed/qq8r9n?view=preview&module=%2Findex.html"
+    style="width:100%; height:500px; border:0; border-radius:8px; overflow:hidden;"
+    title="Weather App"
+    allow="accelerometer; ambient-light-sensor; camera; encrypted-media; geolocation; gyroscope; hid; microphone; midi; payment; usb; vr; xr-spatial-tracking"
+    sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
+  ></iframe>
+</div>

Start by reviewing the changes in PR #331 and the source file en/beginner-projects/weather-app.md. Identify the existing language versions that need the updated Live Demo content, then ensure those translations reflect the English version and verify each changed document is complete.