fix: wait for slot declaration via slots.inject and id list-slot entries

workbench/plugin/client/src/index.jsx

@@ -60,12 +60,26 @@ function WorkbenchOverlay() {
 
 export function apply(ctx) {
   injectStyles()
+  // 插槽须等宿主声明后才能注册：slots.inject 会等待座位声明（顺序安全），
+  // 直接 register 在我们先于 ui-sidebar/ui-layout 加载时会报“slot is not declared”。
   ctx.effect(
-    () => ctx.slots.register({ name: 'sidebar.footer.action' }, WorkbenchFooterAction),
+    () =>
+      ctx.slots.inject('sidebar.footer.action', () =>
+        ctx.slots.register(
+          { name: 'sidebar.footer.action', id: 'gyxx-workbench.footer' },
+          WorkbenchFooterAction,
+        ),
+      ),
     'gyxx-workbench: footer action',
   )
   ctx.effect(
-    () => ctx.slots.register({ name: 'shell.overlay' }, WorkbenchOverlay),
+    () =>
+      ctx.slots.inject('shell.overlay', () =>
+        ctx.slots.register(
+          { name: 'shell.overlay', id: 'gyxx-workbench.overlay' },
+          WorkbenchOverlay,
+        ),
+      ),
     'gyxx-workbench: overlay',
   )
 }