feat(tunnel): add start all tunnels functionality

- Added "Start All" button to UI with proper enable/disable logic
- Implemented startAll method to start all non-running tunnels at once
- Added logic to skip already running or transitioning tunnels
- Implemented failure collection and reporting for individual tunnel errors
- Updated README documentation with new feature description
- Added start_all_test.php to

examples/ssh-tunnel-qt/README.md

@@ -11,6 +11,8 @@
 - SOCKS5：通过 SSH 服务器建立本地 SOCKS5 代理（OpenSSH `-D`）。
 - 新建、查看、编辑和删除规则。
 - 单条隧道启动、停止、状态展示和 SSH 输出日志。
+- “全部启动”一键启动所有未运行（含错误）状态的隧道，已在运行或正在
+  切换状态的隧道会被跳过；单条失败会汇总提示，不影响其余隧道。
 - 支持中文输入法组合事件（Linux IBus/Fcitx、Windows TSF/IMM）。
 - 表格列宽可拖动调整，刷新规则时不会重置列宽。
 - 映射端点分别显示为“本机地址”和“远程地址”；远程转发会按实际方向交换显示。
@@ -104,4 +106,5 @@ Windows 10/11 可在“可选功能”中安装 OpenSSH Client。
 ```bash
 php tests/domain_test.php
 php tests/startup_test.php
+php tests/start_all_test.php
 ```

examples/ssh-tunnel-qt/app/TunnelApplication.php

@@ -71,6 +71,8 @@ class TunnelApplication
                 $this->refresh();
             } elseif ($type === 'start') {
                 $this->start($id);
+            } elseif ($type === 'start_all') {
+                $this->startAll();
             } elseif ($type === 'stop') {
                 $this->stop($id);
             } elseif ($type === 'process_started') {
@@ -127,6 +129,33 @@ class TunnelApplication
         }
     }
 
+    /**
+     * Start every rule that is not already running or transitioning.  A
+     * failing rule must not prevent the remaining tunnels from being
+     * attempted, so failures are collected and reported together.
+     */
+    private function startAll(): void
+    {
+        $failures = [];
+        foreach ($this->repository->all() as $rule) {
+            $state = (string) ($this->states[$rule->id] ?? 'stopped');
+            if ($state === 'running' || $state === 'starting' || $state === 'stopping') {
+                continue;
+            }
+            try {
+                $this->start($rule->id);
+            } catch (Throwable $error) {
+                $failures[] = $rule->name . '：' . $error->getMessage();
+            }
+        }
+
+        // Always refresh so the button re-enables when nothing was startable.
+        $this->refresh();
+        if ($failures !== []) {
+            throw new RuntimeException("以下隧道启动失败：\n" . implode("\n", $failures));
+        }
+    }
+
     private function stop(string $id): void
     {
         $state = (string) ($this->states[$id] ?? 'stopped');

examples/ssh-tunnel-qt/cpp-src/qt_tunnel.cc

@@ -300,14 +300,17 @@ class TunnelWindowBox final : public Box {
         auto *remove = new QPushButton(tr("删除"));
         startButton_ = new QPushButton(tr("启动"));
         stopButton_ = new QPushButton(tr("停止"));
+        startAllButton_ = new QPushButton(tr("全部启动"));
         startButton_->setEnabled(false);
         stopButton_->setEnabled(false);
+        startAllButton_->setEnabled(false);
         auto *buttons = new QHBoxLayout();
         buttons->addWidget(add);
         buttons->addWidget(edit);
         buttons->addWidget(remove);
         buttons->addWidget(clearLogButton_);
         buttons->addStretch();
+        buttons->addWidget(startAllButton_);
         buttons->addWidget(startButton_);
         buttons->addWidget(stopButton_);
         layout->addLayout(buttons);
@@ -327,6 +330,10 @@ class TunnelWindowBox final : public Box {
                 enqueue("delete", id);
             }
         });
+        QObject::connect(startAllButton_, &QPushButton::clicked, window_, [this]() {
+            startAllButton_->setEnabled(false);
+            enqueue("start_all");
+        });
         QObject::connect(startButton_, &QPushButton::clicked, window_, [this]() {
             const QString id = selectedId();
             if (id.isEmpty()) {
@@ -602,6 +609,18 @@ class TunnelWindowBox final : public Box {
     }
 
     void updateActionButtons() {
+        // "Start all" is independent of the table selection: it only needs at
+        // least one rule that is neither running nor transitioning.
+        bool anyStartable = false;
+        for (auto it = statuses_.constBegin(); it != statuses_.constEnd(); ++it) {
+            const QString &status = it.value();
+            if (status != "running" && status != "starting" && status != "stopping") {
+                anyStartable = true;
+                break;
+            }
+        }
+        startAllButton_->setEnabled(anyStartable);
+
         const QString id = selectedId();
         if (id.isEmpty()) {
             startButton_->setEnabled(false);
@@ -690,6 +709,7 @@ class TunnelWindowBox final : public Box {
     QPlainTextEdit *log_ = nullptr;
     QPushButton *startButton_ = nullptr;
     QPushButton *stopButton_ = nullptr;
+    QPushButton *startAllButton_ = nullptr;
     QPushButton *clearLogButton_ = nullptr;
     QHash<QString, RuleForm> rules_;
     QHash<QString, QString> statuses_;