fix(terminal): delay task command until shell is ready

Writing to the PTY immediately after start() was a race condition — the shell hadn't finished initializing, so the command was lost or misinterpreted. Waiting for the first PTY output ensures the shell is ready to accept input.

Also switches the line ending from `\n` to `\r`, which is correct for PTY raw mode.

Author: nullmastermind

src/docks/TerminalDock.cpp

@@ -75,9 +75,11 @@ void TerminalDock::init(const QString &shell, const QString &cwd)
     m_terminal->start(shell, cwd);
 
     if (!m_taskCommand.isEmpty()) {
-        QByteArray cmd = m_taskCommand.toUtf8();
-        cmd.append('\n');
-        m_terminal->writeToPty(cmd);
+        connect(m_terminal, &TerminalWidget::firstOutputReceived, this, [this]() {
+            QByteArray cmd = m_taskCommand.toUtf8();
+            cmd.append('\r');
+            m_terminal->writeToPty(cmd);
+        }, Qt::SingleShotConnection);
     }
 }
 
@@ -119,9 +121,11 @@ void TerminalDock::restartTask()
 
     m_terminal->start(m_shell, m_initialCwd);
 
-    QByteArray cmd = m_taskCommand.toUtf8();
-    cmd.append('\n');
-    m_terminal->writeToPty(cmd);
+    connect(m_terminal, &TerminalWidget::firstOutputReceived, this, [this]() {
+        QByteArray cmd = m_taskCommand.toUtf8();
+        cmd.append('\r');
+        m_terminal->writeToPty(cmd);
+    }, Qt::SingleShotConnection);
 
     m_terminal->setFocus();
 }

src/widgets/TerminalWidget.cpp

@@ -434,6 +434,10 @@ void TerminalWidget::onPtyReadyRead()
     if (!m_pty || !m_vt) return;
     const QByteArray data = m_pty->readAll();
     if (data.isEmpty()) return;
+    if (!m_firstOutputEmitted) {
+        m_firstOutputEmitted = true;
+        emit firstOutputReceived();
+    }
     m_pendingInput.append(data);
     if (!m_batchTimer->isActive()) {
         m_batchTimer->start();

src/widgets/TerminalWidget.h

@@ -60,6 +60,7 @@ class TerminalWidget : public QAbstractScrollArea
     void titleChanged(const QString &title);
     void processExited(int exitCode);
     void spawnFailed(const QString &message);
+    void firstOutputReceived();
 
 protected:
     bool event(QEvent *event) override;
@@ -139,6 +140,7 @@ private slots:
     bool m_focusReporting = false;
     bool m_exited = false;
     int m_exitCode = 0;
+    bool m_firstOutputEmitted = false;
 
     QByteArray m_pendingInput;
     QTimer *m_batchTimer = nullptr;