diff --git a/.githooks/post-receive b/.githooks/post-receive
index 74e8426f..cc6a6b6c 100755
--- a/.githooks/post-receive
+++ b/.githooks/post-receive
@@ -12,6 +12,7 @@ LOG_FILE=""
 CURRENT_BRANCH=""
 START_PORT=""
 BUILD_EXIT=0
+STOP_WAIT_SECONDS=3
 
 resolve_repo_context() {
     GIT_DIR_ABS="$(git rev-parse --absolute-git-dir 2>/dev/null)"
@@ -104,31 +105,42 @@ run_build() {
 }
 
 # ============================================================
-# 6. stop_existing_next —— 仅停止当前分支端口上的旧进程
-#   1) 优雅关闭（SIGTERM）—— 旧进程自己 drain
-#   2) 等 2s
-#   3) 强杀（SIGKILL）—— 还在的话
-#   4) 等 1s
+# 6. stop_existing_next —— 强杀当前分支端口上的旧进程
+#   1) 查找占用 START_PORT 的进程
+#   2) 直接 SIGKILL，避免旧服务 drain 太久导致新服务无法绑定端口
+#   3) 等待 STOP_WAIT_SECONDS，让系统释放端口
+#   4) 复查端口占用并再次强杀残留
 # ============================================================
+find_port_pids() {
+    if command -v lsof >/dev/null 2>&1; then
+        lsof -ti tcp:"$START_PORT" 2>/dev/null || true
+        return
+    fi
+    if command -v fuser >/dev/null 2>&1; then
+        fuser "$START_PORT"/tcp 2>/dev/null || true
+    fi
+}
+
 stop_existing_next() {
     echo "=== stop existing next on port $START_PORT @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
-    PIDS=""
-    if command -v lsof >/dev/null 2>&1; then
-        PIDS="$(lsof -ti tcp:"$START_PORT" 2>/dev/null || true)"
-    elif command -v fuser >/dev/null 2>&1; then
-        PIDS="$(fuser "$START_PORT"/tcp 2>/dev/null || true)"
-    else
-        pkill -f "next start.*$START_PORT" 2>/dev/null || true
-    fi
+    PIDS="$(find_port_pids)"
 
     if [ -n "$PIDS" ]; then
-        kill $PIDS 2>/dev/null || true
-    fi
-    sleep 2
-    if [ -n "$PIDS" ]; then
+        echo "=== force kill PIDS: $PIDS ===" >> "$LOG_FILE"
         kill -9 $PIDS 2>/dev/null || true
+    else
+        echo "=== no process found on port $START_PORT ===" >> "$LOG_FILE"
     fi
-    sleep 1
+
+    sleep "$STOP_WAIT_SECONDS"
+
+    REMAINING_PIDS="$(find_port_pids)"
+    if [ -n "$REMAINING_PIDS" ]; then
+        echo "=== force kill remaining PIDS: $REMAINING_PIDS ===" >> "$LOG_FILE"
+        kill -9 $REMAINING_PIDS 2>/dev/null || true
+        sleep "$STOP_WAIT_SECONDS"
+    fi
+
     echo "=== stop DONE @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
     echo "" >> "$LOG_FILE"
 }
diff --git a/src/app/chat/chat-screen.tsx b/src/app/chat/chat-screen.tsx
index 7637028f..cec8fb9d 100644
--- a/src/app/chat/chat-screen.tsx
+++ b/src/app/chat/chat-screen.tsx
@@ -178,7 +178,7 @@ export function ChatScreen() {
       return;
     }
 
-    UrlLauncherUtil.openUrlWithExternalBrowser(ROUTES.chat);
+    UrlLauncherUtil.openUrlWithExternalBrowser(ROUTES.splash);
   }
 
   return (
diff --git a/src/app/chat/components/pwa-install-overlay.tsx b/src/app/chat/components/pwa-install-overlay.tsx
index fc9a71a2..fdeac0ad 100644
--- a/src/app/chat/components/pwa-install-overlay.tsx
+++ b/src/app/chat/components/pwa-install-overlay.tsx
@@ -15,6 +15,7 @@
 import { useEffect } from "react";
 
 import { BrowserDetector } from "@/utils/browser-detect";
+import { AppEnvUtil } from "@/utils/app-env";
 import { SpAsyncUtil } from "@/utils/storage";
 import { pwaUtil } from "@/utils/pwa";
 
@@ -37,7 +38,7 @@ export function PwaInstallOverlay() {
       // 提前挂 beforeinstallprompt 监听，避免用户点 OK 时事件已在更早时机丢失。
       pwaUtil.prepareInstallPrompt();
 
-      const isDev = process.env.NODE_ENV === "development";
+      const isDev = AppEnvUtil.isDevelopment();
 
       if (!isDev) {
         // 生产环境：每日只弹一次（防骚扰）