refactor(chat): remove private unlock machine flow

src/app/chat/chat-screen.tsx

@@ -49,12 +49,6 @@ export function ChatScreen() {
     state.upgradePromptVisible && state.upgradeReason === "daily_limit";
   const messageLimitTitle = "The limit for free chat times\nhas been reached";
 
-  const showPrivatePaywallBanner =
-    state.upgradePromptVisible && state.upgradeReason === "private_message";
-
-  const inlineUpgradeTitle = "Unlock VIP to view private messages";
-  const inlineUpgradeCta = "Activate VIP to view private messages";
-
   const externalBrowserPromptShownRef = useRef(false);
   const chatPaywallSubscriptionUrl = ROUTE_BUILDERS.subscription("vip", {
     returnTo: "chat",
@@ -129,7 +123,7 @@ export function ChatScreen() {
     UrlLauncherUtil.openUrlWithExternalBrowser(ROUTES.splash);
   }
 
-  function handleUnlockPrivateMessage(): void {
+  function openChatPaywallSubscription(): void {
     if (isGuest) {
       router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
       return;
@@ -137,28 +131,20 @@ export function ChatScreen() {
     router.push(chatPaywallSubscriptionUrl);
   }
 
+  function handleUnlockPrivateMessage(): void {
+    openChatPaywallSubscription();
+  }
+
   function handleUnlockImagePaywall(): void {
-    if (isGuest) {
-      router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
-      return;
-    }
-    router.push(chatPaywallSubscriptionUrl);
+    openChatPaywallSubscription();
   }
 
   function handleMessageLimitUnlock(): void {
-    if (isGuest) {
-      router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
-      return;
-    }
-    router.push(chatPaywallSubscriptionUrl);
+    openChatPaywallSubscription();
   }
 
   function handleUnlockVoiceMessage(): void {
-    if (isGuest) {
-      router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
-      return;
-    }
-    router.push(chatPaywallSubscriptionUrl);
+    openChatPaywallSubscription();
   }
 
   return (
@@ -183,19 +169,11 @@ export function ChatScreen() {
             messages={state.messages}
             isReplyingAI={state.isReplyingAI}
             isGuest={isGuest}
-            unlockingPrivateMessageId={state.unlockingPrivateMessageId}
             onUnlockPrivateMessage={handleUnlockPrivateMessage}
             onUnlockImagePaywall={handleUnlockImagePaywall}
             onUnlockVoiceMessage={handleUnlockVoiceMessage}
           />
 
-          {showPrivatePaywallBanner ? (
-            <ChatQuotaExhaustedBanner
-              title={inlineUpgradeTitle}
-              ctaLabel={inlineUpgradeCta}
-            />
-          ) : null}
-
           {showMessageLimitBanner ? (
             <ChatQuotaExhaustedBanner
               title={messageLimitTitle}