重构屏幕控制引擎 + 新增 Web 监控面板

- ScreenManager: 基于优先级(9/5/0)的统一屏幕控制引擎，替代 _tick 中的
  散乱 if-else 逻辑
- 四个亮屏事件: scheduled(p9), sensor(p9), manual(p5), external(p0)
- GPIO 回调: 电平变化立即触发亮屏（异步线程，不阻塞轮询）
- _fast_check: 每秒轻量评估，提高息屏超时精度（±1s 替代 ±30s）
- padsleep_web: 通过 IPC 读取守护进程状态的实时 Web 面板
  （GPIO 电平/屏幕状态/ADB 连接，端口 31400）
- padsleep-web.service: 关联 padsleep.service 的自启动服务
- install.sh: 修复 venv 初始化目录上下文，使用 requirements.txt
- IpcClient: 修复 socket 复用导致交替失败的问题
- padsleep_tui: 适配 ScreenManager 状态显示

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

install.sh

@@ -63,6 +63,8 @@ info "已创建目录 $INSTALL_DIR"
 # ── 复制文件 ──
 cp "$SRC_DIR/padsleep.py" "$INSTALL_DIR/"
 cp "$SRC_DIR/padsleep_tui.py" "$INSTALL_DIR/"
+cp "$SRC_DIR/padsleep_web.py" "$INSTALL_DIR/" 2>/dev/null || true
+cp -r "$SRC_DIR/templates" "$INSTALL_DIR/" 2>/dev/null || true
 cp "$SRC_DIR/requirements.txt" "$INSTALL_DIR/" 2>/dev/null || true
 
 # 配置文件：目标不存在则复制，存在则保留
@@ -77,25 +79,34 @@ fi
 touch "$INSTALL_DIR/padsleep.log"
 chmod 644 "$INSTALL_DIR/padsleep.log"
 
-# ── 创建 Python 虚拟环境 ──
+# ── 创建 Python 虚拟环境并安装依赖 ──
+# 进入目标目录确保 venv 上下文正确
+cd "$INSTALL_DIR"
+
 if [ ! -d "$VENV_DIR" ]; then
     info "正在创建 Python 虚拟环境..."
-    python3 -m venv "$VENV_DIR"
+    python3 -m venv .venv
     info "虚拟环境已创建: $VENV_DIR"
 else
     info "虚拟环境已存在，跳过创建"
 fi
 
-# ── 安装 Python 依赖 ──
-info "正在安装 Python 依赖..."
-"$VENV_DIR/bin/pip" install --quiet adbutils rpi-lgpio 2>&1 || {
-    warn "pip 安装失败，尝试离线安装..."
-    if [ -f "$SRC_DIR/.venv" ]; then
-        cp -r "$SRC_DIR/.venv" "$VENV_DIR"
-    fi
-}
+info "正在安装 Python 依赖 (requirements.txt)..."
+if [ -f "$INSTALL_DIR/requirements.txt" ]; then
+    .venv/bin/pip install --quiet -r requirements.txt 2>&1 || {
+        warn "pip 安装失败，尝试逐个安装..."
+        .venv/bin/pip install --quiet adbutils rpi-lgpio flask flask-socketio 2>&1 || {
+            warn "pip 安装仍然失败，请手动执行: cd $INSTALL_DIR && .venv/bin/pip install -r requirements.txt"
+        }
+    }
+else
+    .venv/bin/pip install --quiet adbutils rpi-lgpio flask flask-socketio 2>&1 || \
+        warn "pip 安装失败，请手动安装依赖"
+fi
 info "Python 依赖安装完成"
 
+cd "$SRC_DIR"  # 回到源目录
+
 # 设置执行权限
 chmod 755 "$INSTALL_DIR/padsleep.py"
 chmod 755 "$INSTALL_DIR/padsleep_tui.py"
@@ -121,22 +132,38 @@ WRAPPER
 
 create_wrapper "padsleep.py" "$BIN_DIR/padsleep"
 create_wrapper "padsleep_tui.py" "$BIN_DIR/padsleep-config"
+if [ -f "$INSTALL_DIR/padsleep_web.py" ]; then
+    create_wrapper "padsleep_web.py" "$BIN_DIR/padsleep-web"
+fi
 info "已创建命令入口:"
 info "  $BIN_DIR/padsleep       → 启动守护进程 ($PYTHON_BIN)"
 info "  $BIN_DIR/padsleep-config → 启动 TUI 配置工具 ($PYTHON_BIN)"
+info "  $BIN_DIR/padsleep-web   → 启动 Web 监控面板 ($PYTHON_BIN)"
 
 # ── 可选：复制 systemd 服务 ──
-if [ -f "$SRC_DIR/padsleep.service" ]; then
-    cp "$SRC_DIR/padsleep.service" "$SERVICE_DIR/padsleep.service"
-    sed -i "s|WorkingDirectory=.*|WorkingDirectory=$INSTALL_DIR|" "$SERVICE_DIR/padsleep.service"
-    sed -i "s|ExecStart=.*|ExecStart=$PYTHON_BIN $INSTALL_DIR/padsleep.py|" "$SERVICE_DIR/padsleep.service"
-    sed -i "s|^User=.*|User=$RUN_USER|" "$SERVICE_DIR/padsleep.service"
-    systemctl daemon-reload
-    info "已复制 systemd 服务文件: $SERVICE_DIR/padsleep.service"
-    info "服务用户已设为: $RUN_USER"
-    info "可执行以下命令启用:"
-    info "  sudo systemctl enable --now padsleep"
-fi
+install_service() {
+    local src="$1"
+    local dst="$2"
+    local script="$3"
+    if [ ! -f "$src" ]; then
+        warn "服务文件不存在: $src，跳过"
+        return
+    fi
+    cp "$src" "$dst"
+    sed -i "s|WorkingDirectory=.*|WorkingDirectory=$INSTALL_DIR|" "$dst"
+    sed -i "s|ExecStart=.*|ExecStart=$PYTHON_BIN $INSTALL_DIR/$script|" "$dst"
+    sed -i "s|^User=.*|User=$RUN_USER|" "$dst"
+    info "已安装 $dst"
+}
+
+install_service "$SRC_DIR/padsleep.service" "$SERVICE_DIR/padsleep.service" "padsleep.py"
+install_service "$SRC_DIR/padsleep-web.service" "$SERVICE_DIR/padsleep-web.service" "padsleep_web.py"
+
+systemctl daemon-reload
+info "systemd 已重载"
+echo ""
+info "启用服务（自启动 + 立即启动）:"
+info "  sudo systemctl enable --now padsleep padsleep-web"
 
 # ── 检查 ADB ──
 if command -v adb &>/dev/null; then
@@ -151,9 +178,11 @@ echo -e "${GREEN}═════════════════════
 info "安装完成！"
 echo ""
 info "使用方法:"
-echo "  1. 启动守护进程:  padsleep"
-echo "  2. 打开配置界面:  padsleep-config"
-echo "  3. 注册系统服务:  sudo systemctl enable --now padsleep"
+echo "  1. 启动守护进程:         padsleep"
+echo "  2. 打开 TUI 配置界面:    padsleep-config"
+echo "  3. 打开 Web 监控面板:    padsleep-web"
+echo "  4. 注册系统服务:         sudo systemctl enable --now padsleep padsleep-web"
+echo "  5. Web 面板地址:         http://树莓派IP:31400"
 echo ""
 info "配置文件: $INSTALL_DIR/config.json"
 info "日志文件: $INSTALL_DIR/padsleep.log"