fix: evitar uso de document en SSR en Popover.svelte

Co-authored-by: aider (openrouter/openai/gpt-5) <aider@aider.chat>

apps/web/src/lib/ui/feedback/Popover.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { tick, onDestroy } from 'svelte';
   import { createEventDispatcher } from 'svelte';
+  import { browser } from '$app/environment';
 
   export let open: boolean = false;
   export let ariaLabel: string = 'Diálogo';
@@ -47,20 +48,26 @@
   }
 
   $: if (open) {
-    lastActive = document.activeElement;
-    tick().then(() => {
-      panelEl?.focus();
-      document.body.style.overflow = 'hidden';
-    });
+    if (browser) {
+      lastActive = document.activeElement;
+      tick().then(() => {
+        panelEl?.focus();
+        document.body.style.overflow = 'hidden';
+      });
+    }
   } else {
-    document.body.style.overflow = '';
-    if (lastActive instanceof HTMLElement) {
-      tick().then(() => lastActive?.focus());
+    if (browser) {
+      document.body.style.overflow = '';
+      if (lastActive instanceof HTMLElement) {
+        tick().then(() => lastActive?.focus());
+      }
     }
   }
 
   onDestroy(() => {
-    document.body.style.overflow = '';
+    if (browser) {
+      document.body.style.overflow = '';
+    }
   });
 </script>