minor error handling fix

sitecompanion/content.js

@@ -498,6 +498,8 @@ let suppressObserver = false;
 
 async function refreshToolbar() {
   suppressObserver = true;
+  try {
+    if (!chrome?.runtime?.id) return;
     let {
       sites = [],
       workspaces = [],
@@ -516,7 +518,6 @@ async function refreshToolbar() {
     const currentUrl = window.location.href;
     const site = sites.find(s => matchUrl(currentUrl, s.urlPattern));
 
-  try {
     if (!site) {
       const toolbar = document.getElementById("sitecompanion-toolbar");
       if (toolbar) toolbar.remove();
@@ -551,6 +552,12 @@ async function refreshToolbar() {
     const resolvedTheme = resolveThemeValue(theme, workspace, site);
     const themeMode = resolveThemeMode(resolvedTheme);
     createToolbar(siteShortcuts, resolvedPosition, themeMode);
+  } catch (error) {
+    const message = String(error?.message || "");
+    if (message.includes("Extension context invalidated")) {
+      return;
+    }
+    console.warn("SiteCompanion toolbar refresh failed:", error);
   } finally {
     window.setTimeout(() => {
       suppressObserver = false;
@@ -565,7 +572,13 @@ function scheduleToolbarRefresh() {
   if (refreshTimer) return;
   refreshTimer = window.setTimeout(() => {
     refreshTimer = null;
-    void refreshToolbar();
+    refreshToolbar().catch((error) => {
+      const message = String(error?.message || "");
+      if (message.includes("Extension context invalidated")) {
+        return;
+      }
+      console.warn("SiteCompanion toolbar refresh failed:", error);
+    });
   }, 200);
 }