Auto-check platform image toggles when image is uploaded

include_image was always 0 because users had to manually tick the
per-platform image checkbox after uploading — not obvious. Now uploading
an image auto-checks all targets; users can still uncheck individually.

Also removes debug logging from dispatch-social.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/assets/js/app.js

@@ -3933,6 +3933,7 @@ window.addEventListener('DOMContentLoaded', () => {
     page.querySelectorAll('.social-img-cb, .social-img-cb + label').forEach(el => {
       el.classList.toggle('d-none', !show);
     });
+    if (show) page.querySelectorAll('.social-img-cb').forEach(cb => { cb.checked = true; });
   }
 
   function collectTargets() {