fix(portal): close sidebar drawer on resize past desktop breakpoint

Backdrop display:block isn't media-scoped in fp_portal_sidebar.scss
(intentional — JS owns the drawer lifecycle). Without a resize
listener, opening the drawer at <=768px and resizing the browser
to >768px leaves the semi-opaque backdrop visible on desktop while
the sidebar visually snaps back to its sticky rail. Resize handler
calls toggleOpen(false) when crossing the breakpoint with .o_fp_open
still set.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_portal/static/src/js/fp_portal_sidebar.js

@@ -38,6 +38,17 @@
                 }
             });
         });
+
+        // Resize safety: closing the drawer when the user crosses the desktop
+        // breakpoint prevents the backdrop's display:block from leaking onto
+        // the desktop layout. SCSS scopes the sidebar's drawer transform to
+        // @media (max-width: 768px), but the backdrop's display rule isn't
+        // media-scoped (intentionally — the JS owns that lifecycle).
+        window.addEventListener("resize", function () {
+            if (window.innerWidth > 768 && sidebar.classList.contains("o_fp_open")) {
+                toggleOpen(false);
+            }
+        });
     }
 
     if (document.readyState === "loading") {