update copy for sign in views (#238)

* update copy for sign in views

This disambiguates whether the view is for sign up or sign in.

* format

* escape character

* format

* update workflow names

js/mobile/src/features/auth/SignInScreen.tsx

@@ -60,9 +60,10 @@ function EmailStep({ onCodeSent }: { onCodeSent: (email: string) => void }) {
   return (
     <View className="gap-5">
       <View className="gap-1">
-        <Text className="text-foreground text-3xl font-semibold">Sign in</Text>
+        <Text className="text-foreground text-3xl font-semibold">Welcome</Text>
         <Text className="text-muted-foreground text-base">
-          Enter your email to receive a sign-in code.
+          Enter your email to sign in or create an account. We&apos;ll send a
+          code to verify it.
         </Text>
       </View>