diff --git a/install.sh b/install.sh
index e8da7a3c..e962ecbb 100755
--- a/install.sh
+++ b/install.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # ==========================================================
-# 脚本名称: install.sh (v4.3.0 模块化终极引导入口)
-# 核心功能: 权限鉴定、沙盒创建、Ctrl+C 熔断保护、业务流引导
+# 脚本名称: install.sh (动态模块化终极引导入口)
+# 核心功能: 权限鉴定、沙盒创建、Ctrl+C 熔断保护、动态版本嗅探
 # ==========================================================
 
 if [ "$EUID" -ne 0 ]; then
@@ -23,9 +23,14 @@ trap 'rm -rf "$SECURE_TMP" 2>/dev/null' EXIT HUP
 
 REPO_RAW_URL="https://raw.githubusercontent.com/hotyue/IP-Sentinel/main"
 
-echo -e "\n⏳ 正在拉取 IP-Sentinel v4.3.0 安装模块引擎..."
+# ----------------------------------------------------------
+# [核心架构升级] 动态嗅探云端真理之源 (SSOT)
+# ----------------------------------------------------------
+TARGET_VERSION=$( (curl -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt?t=$(date +%s)" || curl -4 -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt?t=$(date +%s)") 2>/dev/null | grep "^AGENT_VERSION=" | cut -d'=' -f2 | tr -d '[:space:]')
+TARGET_VERSION=${TARGET_VERSION:-"4.3.1"}
+
+echo -e "\n⏳ 正在拉取 IP-Sentinel v${TARGET_VERSION} 安装模块引擎..."
 
-# 【核心防线】追加 ?t=$(date +%s) 强行击穿 GitHub CDN 缓存
 curl -fsSL --connect-timeout 10 --retry 3 "${REPO_RAW_URL}/install/build_agent.sh?t=$(date +%s)" -o "${SECURE_TMP}/build_agent.sh"
 
 if [ ! -s "${SECURE_TMP}/build_agent.sh" ]; then
@@ -35,6 +40,7 @@ fi
 
 export SECURE_TMP
 export REPO_RAW_URL
+export TARGET_VERSION
 
 chmod +x "${SECURE_TMP}/build_agent.sh"
 bash "${SECURE_TMP}/build_agent.sh"
diff --git a/install/env_setup.sh b/install/env_setup.sh
index b3cd205f..a25beccd 100755
--- a/install/env_setup.sh
+++ b/install/env_setup.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # ==========================================================
 # 模块名称: env_setup.sh
-# 核心功能: 靶机架构预检、云端版本解析、多分支包管理器依赖补全
+# 核心功能: 靶机架构预检、多分支包管理器依赖补全
 # ==========================================================
 
 is_systemd() {
@@ -35,9 +35,6 @@ version_lt() {
     test "$(printf '%s\n' "$1" "$2" | sort -V | head -n 1)" = "$1" && test "$1" != "$2"
 }
 
-# ----------------------------------------------------------
-# [时序 1] 预检系统环境，输出雷达面板
-# ----------------------------------------------------------
 do_env_precheck() {
     echo -e "\n======================================"
     echo -e "📊 \033[36mIP-Sentinel 靶机环境侦测预检\033[0m"
@@ -56,22 +53,14 @@ do_env_precheck() {
     CONFIG_FILE="${INSTALL_DIR}/config.conf"
 }
 
-# ----------------------------------------------------------
-# [时序 2] 解析远端版本锚点
-# ----------------------------------------------------------
 do_fetch_version() {
-    # 动态抓取，若失败则提供硬编码保底
-    TARGET_VERSION=$( (curl -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt" || curl -4 -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt") 2>/dev/null | grep "^AGENT_VERSION=" | cut -d'=' -f2 | tr -d '[:space:]')
-    TARGET_VERSION=${TARGET_VERSION:-"4.2.3"}
+    # 已由外壳入口拉取并 export TARGET_VERSION，此处只需保障兜底容错
+    TARGET_VERSION=${TARGET_VERSION:-"4.3.1"}
 }
 
-# ----------------------------------------------------------
-# [时序 3] 唤醒包管理器，补全战地依赖
-# ----------------------------------------------------------
 do_install_deps() {
     echo -e "\n[1/7] 正在探测并安装基础环境依赖 (curl, jq, cron, procps, python3, sqlite3)..."
     
-    # [修改点] 将 sqlite3 统一纳入全端基础依赖池
     REQUIRED_CMDS=("curl" "jq" "crontab" "pgrep" "python3" "openssl" "sqlite3")
     MISSING_CMDS=()
 
@@ -86,7 +75,6 @@ do_install_deps() {
         
         if command -v apt-get >/dev/null 2>&1; then
             apt-get update -y >/dev/null 2>&1
-            # [修改点] apt-get 阵营追加 sqlite3
             apt-get install -y --no-install-recommends curl jq cron procps python3 openssl sqlite3 >/dev/null 2>&1
             systemctl enable cron >/dev/null 2>&1 && systemctl start cron >/dev/null 2>&1
             
@@ -104,20 +92,17 @@ do_install_deps() {
             $PKG_MGR install -y epel-release >/dev/null 2>&1 || true
             
             echo -e "\033[90m   (正在拉取核心组件...)\033[0m"
-            # [修改点] RHEL 阵营追加 sqlite
             $PKG_MGR install -y $OPT_ARGS curl jq cronie procps-ng python3 openssl sqlite
             systemctl enable crond >/dev/null 2>&1 && systemctl start crond >/dev/null 2>&1
             
         elif command -v apk >/dev/null 2>&1; then
             echo "Alpine 探测到系统类型为 Alpine Linux，正在执行轻量级安装..."
-            # [修改点] Alpine 阵营追加 sqlite
             apk add --no-cache curl jq cronie procps python3 bash openssl sqlite || apk add --no-cache curl jq procps python3 bash openssl sqlite
             mkdir -p /var/spool/cron/crontabs
             rc-update add crond default >/dev/null 2>&1
             service crond start >/dev/null 2>&1
             
         elif command -v pacman >/dev/null 2>&1; then
-            # [修改点] Arch 阵营追加 sqlite
             pacman -S --needed --noconfirm curl jq cronie procps-ng python openssl sqlite >/dev/null 2>&1
             mkdir -p /root/.cache/crontab 2>/dev/null
             systemctl enable cronie >/dev/null 2>&1 && systemctl start cronie >/dev/null 2>&1
@@ -125,7 +110,6 @@ do_install_deps() {
         else
             echo -e "\033[31m❌ 自动安装失败：系统未知的包管理器。\033[0m"
             echo -e "\033[33m⚠️ 请根据您的操作系统，手动执行以下安装命令后重新运行本脚本：\033[0m"
-            # [修改点] 手动提示文案追加 sqlite3/sqlite
             echo -e "  Debian/Ubuntu: \033[36mapt-get update && apt-get install -y --no-install-recommends curl jq cron procps python3 openssl sqlite3\033[0m"
             echo -e "  CentOS/RHEL:   \033[36myum install -y curl jq cronie procps-ng python3 openssl sqlite\033[0m"
             echo -e "  Alpine Linux:  \033[36mapk add --no-cache curl jq cronie procps python3 bash openssl sqlite\033[0m"
diff --git a/install/master_setup.sh b/install/master_setup.sh
index abaea5bb..8e3211c6 100755
--- a/install/master_setup.sh
+++ b/install/master_setup.sh
@@ -21,7 +21,7 @@ do_master_env_precheck() {
 }
 
 do_fetch_master_version() {
-    TARGET_VERSION=$( (curl -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt" || curl -4 -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt") 2>/dev/null | grep "^MASTER_VERSION=" | cut -d'=' -f2 | tr -d '[:space:]')
+    TARGET_VERSION=${TARGET_VERSION:-"4.3.1"}
     TARGET_VERSION=${TARGET_VERSION:-"4.0.7"}
 
     MASTER_DIR="/opt/ip_sentinel_master"
diff --git a/master/install_master.sh b/master/install_master.sh
index db21cc2f..7d030c31 100755
--- a/master/install_master.sh
+++ b/master/install_master.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # ==========================================================
-# 脚本名称: install_master.sh (v4.3.0 终极模块化引导入口)
-# 核心功能: 极简引导入口。包含 Ctrl+C 优雅中断，采用物理文件执行规避管道污染
+# 脚本名称: install_master.sh (动态模块化终极引导入口)
+# 核心功能: 极简引导入口。包含 Ctrl+C 优雅中断，动态版本嗅探
 # ==========================================================
 
 cleanup_and_exit() {
@@ -22,9 +22,14 @@ fi
 SECURE_TMP=$(mktemp -d /tmp/ips_master_install.XXXXXX)
 REPO_RAW_URL="https://raw.githubusercontent.com/hotyue/IP-Sentinel/main"
 
-echo -e "\n⏳ 正在拉取 IP-Sentinel Master v4.3.0 安装引擎..."
+# ----------------------------------------------------------
+# [核心架构升级] 动态嗅探云端真理之源 (SSOT)
+# ----------------------------------------------------------
+TARGET_VERSION=$( (curl -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt?t=$(date +%s)" || curl -4 -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt?t=$(date +%s)") 2>/dev/null | grep "^MASTER_VERSION=" | cut -d'=' -f2 | tr -d '[:space:]')
+TARGET_VERSION=${TARGET_VERSION:-"4.3.1"}
+
+echo -e "\n⏳ 正在拉取 IP-Sentinel Master v${TARGET_VERSION} 安装引擎..."
 
-# 【核心防线】追加 ?t=$(date +%s) 强行击穿 GitHub CDN 缓存
 curl -fsSL --connect-timeout 10 --retry 3 "${REPO_RAW_URL}/install/build_master.sh?t=$(date +%s)" -o "${SECURE_TMP}/build_master.sh"
 
 if [ ! -s "${SECURE_TMP}/build_master.sh" ]; then
@@ -34,6 +39,7 @@ fi
 
 export SECURE_TMP
 export REPO_RAW_URL
+export TARGET_VERSION
 
 chmod +x "${SECURE_TMP}/build_master.sh"
 bash "${SECURE_TMP}/build_master.sh"