feat: allow Escape key to dismiss settings page

resolves #249

Author: danielroe

app/pages/settings.vue

@@ -8,10 +8,37 @@ const availableLocales = computed(() =>
   locales.value.map(l => (typeof l === 'string' ? { code: l, name: l } : l)),
 )
 
+/**
+ * Check if it's safe to navigate back (previous page was same origin).
+ * Uses document.referrer to verify the user came from this site.
+ */
+function canGoBack(): boolean {
+  if (import.meta.server) return false
+  if (window.history.length <= 1) return false
+  const referrer = document.referrer
+  if (!referrer) return false
+  try {
+    return new URL(referrer).origin === window.location.origin
+  } catch {
+    return false
+  }
+}
+
 function goBack() {
-  router.back()
+  if (canGoBack()) {
+    router.back()
+  } else {
+    router.push('/')
+  }
 }
 
+onKeyStroke('Escape', e => {
+  const target = e.target as HTMLElement
+  if (!['INPUT', 'SELECT', 'TEXTAREA'].includes(target?.tagName)) {
+    goBack()
+  }
+})
+
 useSeoMeta({
   title: 'Settings - npmx',
 })