Add global listener for HTMX save confirmations and trigger event

physics/templates/physics/exam_take.html

@@ -245,4 +245,43 @@
     });
 })();
 </script>
+<script>
+// Global listener for server-triggered save confirmations.
+// The view sets an `HX-Trigger` header named `saved` when an HTMX save occurs.
+document.addEventListener('saved', function(evt){
+    try {
+        // Prefer toastr if available
+        if (typeof toastr !== 'undefined' && toastr && typeof toastr.success === 'function') {
+            toastr.success('Saved');
+            return;
+        }
+
+        // Lightweight fallback toast
+        const id = 'htmx-save-toast';
+        let el = document.getElementById(id);
+        if (!el) {
+            el = document.createElement('div');
+            el.id = id;
+            el.style.position = 'fixed';
+            el.style.top = '1rem';
+            el.style.right = '1rem';
+            el.style.zIndex = 2000;
+            el.style.padding = '0.6rem 0.9rem';
+            el.style.background = 'rgba(40,167,69,0.95)';
+            el.style.color = '#fff';
+            el.style.borderRadius = '0.4rem';
+            el.style.boxShadow = '0 2px 8px rgba(0,0,0,0.2)';
+            el.style.fontWeight = '600';
+            el.style.opacity = '0';
+            el.style.transition = 'opacity 220ms ease-in-out';
+            document.body.appendChild(el);
+        }
+        el.textContent = 'Saved';
+        // show
+        requestAnimationFrame(function(){ el.style.opacity = '1'; });
+        // hide after 1.6s
+        setTimeout(function(){ el.style.opacity = '0'; }, 1600);
+    } catch (e) { console && console.error && console.error(e); }
+});
+</script>
 {% endblock %}