refactor(chat): make external browser launch user initiated

src/app/chat/chat-screen.tsx

@@ -34,7 +34,6 @@ import { useFirstRechargeOfferBanner } from "./hooks/use-first-recharge-offer-ba
 import { useChatUnlockNavigationFlow } from "./hooks/use-chat-unlock-navigation-flow";
 import { useChatGuestLogin } from "./hooks/use-chat-guest-login";
 import { useChatMessageLimitBanner } from "./hooks/use-chat-message-limit-banner";
-import { useExternalBrowserPrompt } from "./hooks/use-external-browser-prompt";
 import styles from "./components/chat-screen.module.css";
 
 export function ChatScreen() {
@@ -91,11 +90,6 @@ export function ChatScreen() {
     loginStatus: authState.loginStatus,
   });
   const shouldShowPwaInstall = state.historyLoaded && state.messages.length >= 10;
-  useExternalBrowserPrompt({
-    hasInitialized: authState.hasInitialized,
-    isLoading: authState.isLoading,
-    loginStatus: authState.loginStatus,
-  });
 
   useChatGuestLogin({
     dispatch: authDispatch,

src/app/chat/components/browser-hint-overlay.module.css

@@ -9,22 +9,54 @@
   align-items: flex-end;
   gap: var(--spacing-1, 4px);
   z-index: 20;
-  pointer-events: none;
+  max-width: min(52vw, 210px);
+  padding: 0;
+  border: 0;
+  background: transparent;
+  color: inherit;
+  cursor: pointer;
+  pointer-events: auto;
+  transition: opacity 0.16s ease, transform 0.16s ease;
+  -webkit-tap-highlight-color: transparent;
 }
 
 .emoji {
   font-size: var(--responsive-icon-size-md, 24px);
   line-height: 1;
+  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.32));
 }
 
 .hintBubble {
   padding: var(--spacing-2, 8px) var(--spacing-3, 12px);
-  background: var(--color-blur-background, rgba(13, 11, 20, 0.85));
+  border: 1px solid rgba(255, 255, 255, 0.18);
-  border-radius: var(--radius-md, 8px);
+  border-radius: var(--radius-lg, 14px);
+  background:
+    linear-gradient(135deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.04)),
+    var(--color-blur-background, rgba(13, 11, 20, 0.84));
+  box-shadow:
+    0 10px 24px rgba(0, 0, 0, 0.2),
+    inset 0 1px 0 rgba(255, 255, 255, 0.14);
   font-size: var(--font-size-sm, 12px);
-  font-weight: 500;
+  font-weight: 700;
+  line-height: 1.25;
   color: #fff;
-  white-space: pre-line;
   backdrop-filter: blur(10px);
-  max-width: min(52vw, 200px);
+  text-align: left;
+  white-space: pre-line;
+  overflow-wrap: break-word;
+}
+
+.overlay:hover {
+  opacity: 0.94;
+  transform: translateY(-1px);
+}
+
+.overlay:active {
+  opacity: 0.88;
+  transform: translateY(1px) scale(0.99);
+}
+
+.overlay:focus-visible {
+  outline: 2px solid rgba(255, 255, 255, 0.88);
+  outline-offset: 4px;
 }

src/app/chat/components/browser-hint-overlay.tsx

@@ -10,10 +10,11 @@
  * 行为：
  *   - 开发环境始终显示（测试方便）
  *   - 生产环境仅在应用内浏览器中显示
- *   - 视觉：右上角 👆 + 模糊背景气泡
+ *   - 点击后主动打开外部浏览器
  */
 import { useState } from "react";
 
+import { openChatInExternalBrowser } from "@/lib/chat/chat_external_browser";
 import { BrowserDetector } from "@/utils";
 
 import styles from "./browser-hint-overlay.module.css";
@@ -25,7 +26,7 @@ export interface BrowserHintOverlayProps {
   forceShow?: boolean;
 }
 
-const DEFAULT_TEXT = "Tap ⋮ , open in browser\nfor better chat";
+const DEFAULT_TEXT = "Open in external browser\nto find me easily";
 
 export function BrowserHintOverlay({
   text = DEFAULT_TEXT,
@@ -38,12 +39,20 @@ export function BrowserHintOverlay({
   const shouldShow = forceShow || isInAppBrowser;
   if (!shouldShow) return null;
 
+  const handleClick = (): void => {
+    void openChatInExternalBrowser().catch((error) => {
+      console.warn("[chat] Failed to open external browser", error);
+    });
+  };
+
   return (
-    <div className={styles.overlay} role="status" aria-live="polite">
+    <button
-      <span className={styles.emoji} aria-hidden="true">
+      type="button"
-        👆
+      className={styles.overlay}
-      </span>
+      aria-label={text}
-      <div className={styles.hintBubble}>{text}</div>
+      onClick={handleClick}
-    </div>
+    >
+      <span className={styles.hintBubble}>{text}</span>
+    </button>
   );
 }

src/app/chat/hooks/use-external-browser-prompt.ts

@@ -1,75 +0,0 @@
-"use client";
-
-import { useEffect, useRef } from "react";
-
-import {
-  openChatInExternalBrowser,
-  recordExternalBrowserPromptShown,
-  resolveExternalBrowserPromptEligibility,
-} from "@/lib/chat/chat_external_browser";
-
-import {
-  type ExternalBrowserPromptState,
-  shouldStartExternalBrowserPrompt,
-} from "../chat-screen.helpers";
-
-const EXTERNAL_BROWSER_PROMPT_DELAY_MS = 3000;
-
-export function useExternalBrowserPrompt({
-  hasInitialized,
-  isLoading,
-  loginStatus,
-}: ExternalBrowserPromptState): void {
-  const promptShownRef = useRef(false);
-
-  useEffect(() => {
-    if (
-      !shouldStartExternalBrowserPrompt({
-        hasInitialized,
-        isLoading,
-        loginStatus,
-      })
-    ) {
-      return;
-    }
-
-    let mounted = true;
-    let timer: number | undefined;
-
-    const init = async () => {
-      if (promptShownRef.current) return;
-
-      const eligibility = await resolveExternalBrowserPromptEligibility();
-      if (!mounted || !eligibility.canShow) return;
-
-      promptShownRef.current = true;
-      timer = window.setTimeout(() => {
-        if (!mounted) return;
-        void (async () => {
-          try {
-            await recordExternalBrowserPromptShown(eligibility.today);
-          } catch (error) {
-            console.warn(
-              "[chat] Failed to record external browser auto launch",
-              error,
-            );
-          }
-          if (!mounted) return;
-          try {
-            await openChatInExternalBrowser();
-          } catch (error) {
-            console.warn("[chat] Failed to open external browser", error);
-          }
-        })();
-      }, EXTERNAL_BROWSER_PROMPT_DELAY_MS);
-    };
-
-    void init();
-
-    return () => {
-      mounted = false;
-      if (timer !== undefined) window.clearTimeout(timer);
-    };
-  }, [hasInitialized, isLoading, loginStatus]);
-
-}

src/data/storage/app/app_storage.ts

@@ -41,26 +41,6 @@ export class AppStorage {
     return SpAsyncUtil.setBool(StorageKeys.pwaDialogShown, true);
   }
 
-  // ---- external browser dialog ----
-
-  static async canShowExternalBrowserDialog(
-    todayString: string,
-  ): Promise<ResultT<boolean>> {
-    return AppStorage.canReportKey(
-      StorageKeys.lastExternalBrowserDialogShown,
-      todayString,
-    );
-  }
-
-  static recordExternalBrowserDialogShown(
-    todayString: string,
-  ): Promise<ResultT<void>> {
-    return SpAsyncUtil.setString(
-      StorageKeys.lastExternalBrowserDialogShown,
-      todayString,
-    );
-  }
-
   // ---- PWA event reporting ----
 
   static canReportPwaEvent(todayString: string): Promise<ResultT<boolean>> {

src/data/storage/storage_keys.ts

@@ -29,7 +29,6 @@ export const StorageKeys = {
 
   // pwa / app info
   pwaDialogShown: "pwa_dialog_shown",
-  lastExternalBrowserDialogShown: "last_external_browser_dialog_shown",
   lastPwaEventReported: "last_pwa_event_reported",
   lastAppInfoReported: "last_app_info_reported",
   firstRechargeOfferBannerDismissed: "first_recharge_offer_banner_dismissed",

src/lib/chat/chat_external_browser.ts

@@ -1,28 +1,9 @@
 "use client";
 
-import { AppStorage } from "@/data/storage/app/app_storage";
 import { AuthStorage } from "@/data/storage/auth/auth_storage";
 import { UserStorage } from "@/data/storage/user/user_storage";
 import { ROUTES } from "@/router/routes";
-import { todayString, UrlLauncherUtil } from "@/utils";
+import { UrlLauncherUtil } from "@/utils";
-
-export async function resolveExternalBrowserPromptEligibility(): Promise<{
-  canShow: boolean;
-  today: string;
-}> {
-  const today = todayString();
-  const result = await AppStorage.canShowExternalBrowserDialog(today);
-  return {
-    canShow: result.success && result.data,
-    today,
-  };
-}
-
-export function recordExternalBrowserPromptShown(
-  today: string,
-): Promise<unknown> {
-  return AppStorage.recordExternalBrowserDialogShown(today);
-}
 
 export async function openChatInExternalBrowser(): Promise<void> {
   const authStorage = AuthStorage.getInstance();