Initial open-source release

Claude-Session: https://claude.ai/code/session_01B65qLEKnkeYTGdbwhLpjCu

src/workbench/Notifications.module.css

@@ -0,0 +1,48 @@
+.stack {
+  position: fixed;
+  /* Inside the editor island's bottom-right corner, clear of the right stripe. */
+  right: 78px;
+  bottom: calc(var(--h-statusbar) + 16px);
+  /* Balloons belong to the main window: modal dialogs cover them, like IDEA. */
+  z-index: calc(var(--z-dialog) - 1);
+  display: flex;
+  flex-direction: column;
+  align-items: flex-end;
+  gap: 8px;
+  pointer-events: none;
+}
+.balloon {
+  pointer-events: auto;
+  animation: slideIn var(--dur) var(--ease);
+}
+@keyframes slideIn {
+  from {
+    opacity: 0;
+    transform: translateX(12px);
+  }
+}
+@media (prefers-reduced-motion: reduce) {
+  .balloon {
+    animation: none;
+  }
+}
+.list {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  overflow: auto;
+  outline: none;
+}
+.entry {
+  width: 100%;
+  flex: none;
+  border: 0;
+  border-bottom: 1px solid var(--border);
+  border-radius: 0;
+  box-shadow: none;
+  background: none;
+}
+.entry:last-child {
+  border-bottom: 0;
+}