Changeset 0.21.3 (#89)

src/js/extensions.js

@@ -242,6 +242,22 @@ const Extensions = {
                     return Promise.resolve(window.confirm(msg));
                 },
 
+                /**
+                 * Replace a surface region's content with a new element.
+                 * Current children are preserved in memory (not destroyed)
+                 * and can be restored later. Critical for CM6 state preservation.
+                 */
+                replace(regionId, element) {
+                    if (typeof Surfaces !== 'undefined') Surfaces.replace(regionId, element);
+                },
+
+                /**
+                 * Restore a surface region's previously saved content.
+                 */
+                restore(regionId) {
+                    if (typeof Surfaces !== 'undefined') Surfaces.restore(regionId);
+                },
+
                 /** Inject an element into a named UI region (stub for future use). */
                 inject(region, el) {
                     console.warn(`[Extensions] ui.inject() not yet implemented (${extId}:${region})`);
@@ -254,6 +270,23 @@ const Extensions = {
                 },
             },
 
+            // Surface registration (v0.21.3)
+            surfaces: {
+                register: (id, opts) => {
+                    if (typeof Surfaces !== 'undefined') Surfaces.register(id, opts);
+                },
+                unregister: (id) => {
+                    if (typeof Surfaces !== 'undefined') Surfaces.unregister(id);
+                },
+                activate: (id) => {
+                    if (typeof Surfaces !== 'undefined') Surfaces.activate(id);
+                },
+                getCurrent: () => {
+                    if (typeof Surfaces !== 'undefined') return Surfaces.getCurrent();
+                    return 'chat';
+                },
+            },
+
             // Model info (resolved at call time)
             get model() {
                 return {