diff --git a/CMakeLists.txt b/CMakeLists.txt
index 355570a..97daf8f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,6 +41,8 @@ qt_add_executable(QtDesktopPet
     src/tray/TrayController.cpp
     src/ui/ChatBubble.h
     src/ui/ChatBubble.cpp
+    src/ui/ChatInputDialog.h
+    src/ui/ChatInputDialog.cpp
     src/ui/PetView.h
     src/ui/PetView.cpp
     src/ui/SettingsDialog.h
diff --git a/src/ai/ConversationManager.cpp b/src/ai/ConversationManager.cpp
index 737701a..853d323 100644
--- a/src/ai/ConversationManager.cpp
+++ b/src/ai/ConversationManager.cpp
@@ -1,5 +1,6 @@
 #include "ConversationManager.h"
 
+#include <QtGlobal>
 #include <utility>
 
 ConversationManager::ConversationManager()
@@ -22,6 +23,11 @@ bool ConversationManager::hasHistory() const
     return !m_history.isEmpty();
 }
 
+QVector<ChatMessage> ConversationManager::history() const
+{
+    return m_history;
+}
+
 bool ConversationManager::setProvider(std::unique_ptr<LLMProvider> provider)
 {
     if (isBusy())
@@ -103,9 +109,10 @@ ChatRequest ConversationManager::buildRequest(const ChatMessage &userMessage) co
         request.messages.append({QStringLiteral("system"), m_systemPrompt});
     }
 
-    for (const ChatMessage &message : m_history)
+    const int firstHistoryIndex = qMax(0, m_history.size() - m_maxRequestHistoryMessages);
+    for (int index = firstHistoryIndex; index < m_history.size(); ++index)
     {
-        request.messages.append(message);
+        request.messages.append(m_history.at(index));
     }
     request.messages.append(userMessage);
     return request;
@@ -115,13 +122,4 @@ void ConversationManager::appendExchange(const ChatMessage &userMessage, const C
 {
     m_history.append(userMessage);
     m_history.append(assistantMessage);
-    trimHistory();
-}
-
-void ConversationManager::trimHistory()
-{
-    while (m_history.size() > m_maxHistoryMessages)
-    {
-        m_history.removeFirst();
-    }
 }
diff --git a/src/ai/ConversationManager.h b/src/ai/ConversationManager.h
index e2f58fc..ebf8a32 100644
--- a/src/ai/ConversationManager.h
+++ b/src/ai/ConversationManager.h
@@ -17,6 +17,7 @@ public:
 
     bool isBusy() const;
     bool hasHistory() const;
+    QVector<ChatMessage> history() const;
     bool setProvider(std::unique_ptr<LLMProvider> provider);
     void sendUserMessage(const QString &message, ResponseCallback callback);
     void cancel();
@@ -25,10 +26,9 @@ public:
 private:
     ChatRequest buildRequest(const ChatMessage &userMessage) const;
     void appendExchange(const ChatMessage &userMessage, const ChatMessage &assistantMessage);
-    void trimHistory();
 
     std::unique_ptr<LLMProvider> m_provider;
     QVector<ChatMessage> m_history;
     QString m_systemPrompt;
-    int m_maxHistoryMessages = 12;
+    int m_maxRequestHistoryMessages = 12;
 };
diff --git a/src/ui/ChatBubble.cpp b/src/ui/ChatBubble.cpp
index 457cd48..7776635 100644
--- a/src/ui/ChatBubble.cpp
+++ b/src/ui/ChatBubble.cpp
@@ -1,5 +1,7 @@
 #include "ChatBubble.h"
 
+#include <QApplication>
+#include <QEvent>
 #include <QFontMetrics>
 #include <QFrame>
 #include <QRect>
@@ -32,6 +34,10 @@ ChatBubble::ChatBubble(QWidget *parent)
     m_textEdit->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
     m_textEdit->setLineWrapMode(QTextEdit::WidgetWidth);
     m_textEdit->setTextInteractionFlags(Qt::TextSelectableByMouse);
+    m_textEdit->installEventFilter(this);
+    m_textEdit->viewport()->installEventFilter(this);
+    m_textEdit->verticalScrollBar()->installEventFilter(this);
+    qApp->installEventFilter(this);
     m_textEdit->setStyleSheet(QStringLiteral(
         "QTextEdit {"
         "background: rgba(255, 255, 255, 232);"
@@ -65,7 +71,9 @@ ChatBubble::ChatBubble(QWidget *parent)
 
 void ChatBubble::showMessage(const QString &message, const QPoint &anchorPosition, int durationMs)
 {
+    m_dismissOnExternalInteraction = false;
     m_anchorPosition = anchorPosition;
+    m_autoHideDurationMs = durationMs;
     const QString trimmed = message.trimmed();
     m_textEdit->setPlainText(trimmed);
     m_textEdit->verticalScrollBar()->setValue(0);
@@ -91,6 +99,79 @@ void ChatBubble::updateAnchorPosition(const QPoint &anchorPosition)
     }
 }
 
+void ChatBubble::setDismissOnExternalInteraction(bool enabled)
+{
+    m_dismissOnExternalInteraction = enabled;
+}
+
+void ChatBubble::resetAutoHideTimer()
+{
+    if (isVisible() && m_autoHideDurationMs > 0)
+    {
+        m_hideTimer.start(m_autoHideDurationMs);
+    }
+}
+
+void ChatBubble::hideBubble()
+{
+    m_hideTimer.stop();
+    hide();
+}
+
+bool ChatBubble::eventFilter(QObject *watched, QEvent *event)
+{
+    if (watched == qApp && m_dismissOnExternalInteraction && event->type() == QEvent::ApplicationDeactivate)
+    {
+        hideBubble();
+        return false;
+    }
+
+    if (m_dismissOnExternalInteraction && event->type() == QEvent::MouseButtonPress && !isOwnObject(watched))
+    {
+        hideBubble();
+        return false;
+    }
+
+    if ((watched == m_textEdit || watched == m_textEdit->viewport() || watched == m_textEdit->verticalScrollBar())
+        && isUserInteractionEvent(event))
+    {
+        resetAutoHideTimer();
+    }
+
+    return QWidget::eventFilter(watched, event);
+}
+
+bool ChatBubble::isOwnObject(QObject *object) const
+{
+    while (object != nullptr)
+    {
+        if (object == this || object == m_textEdit || object == m_textEdit->viewport() || object == m_textEdit->verticalScrollBar())
+        {
+            return true;
+        }
+
+        object = object->parent();
+    }
+
+    return false;
+}
+
+bool ChatBubble::isUserInteractionEvent(QEvent *event) const
+{
+    switch (event->type())
+    {
+    case QEvent::MouseButtonPress:
+    case QEvent::MouseButtonRelease:
+    case QEvent::MouseButtonDblClick:
+    case QEvent::MouseMove:
+    case QEvent::Wheel:
+    case QEvent::KeyPress:
+        return true;
+    default:
+        return false;
+    }
+}
+
 QSize ChatBubble::preferredBubbleSize(const QString &message) const
 {
     const QFontMetrics metrics(m_textEdit->font());
diff --git a/src/ui/ChatBubble.h b/src/ui/ChatBubble.h
index 4da8d9b..efc3d7d 100644
--- a/src/ui/ChatBubble.h
+++ b/src/ui/ChatBubble.h
@@ -4,6 +4,8 @@
 #include <QTimer>
 #include <QWidget>
 
+class QEvent;
+
 class ChatBubble : public QWidget
 {
 public:
@@ -11,12 +13,22 @@ public:
 
     void showMessage(const QString &message, const QPoint &anchorPosition, int durationMs = 10000);
     void updateAnchorPosition(const QPoint &anchorPosition);
+    void setDismissOnExternalInteraction(bool enabled);
+    void resetAutoHideTimer();
+    void hideBubble();
+
+protected:
+    bool eventFilter(QObject *watched, QEvent *event) override;
 
 private:
+    bool isOwnObject(QObject *object) const;
+    bool isUserInteractionEvent(QEvent *event) const;
     QSize preferredBubbleSize(const QString &message) const;
     void updatePosition();
 
     QTextEdit *m_textEdit = nullptr;
     QTimer m_hideTimer;
     QPoint m_anchorPosition;
+    int m_autoHideDurationMs = 0;
+    bool m_dismissOnExternalInteraction = false;
 };
diff --git a/src/ui/ChatInputDialog.cpp b/src/ui/ChatInputDialog.cpp
new file mode 100644
index 0000000..04545b6
--- /dev/null
+++ b/src/ui/ChatInputDialog.cpp
@@ -0,0 +1,286 @@
+#include "ChatInputDialog.h"
+
+#include <QApplication>
+#include <QEvent>
+#include <QFrame>
+#include <QHBoxLayout>
+#include <QKeyEvent>
+#include <QLabel>
+#include <QMouseEvent>
+#include <QPushButton>
+#include <QTextEdit>
+
+#include <utility>
+
+ChatInputDialog::ChatInputDialog(int maxLength, QWidget *parent)
+    : QDialog(parent)
+    , m_textEdit(new QTextEdit(this))
+    , m_counterLabel(new QLabel(this))
+    , m_sendButton(new QPushButton(QStringLiteral("↗"), this))
+    , m_maxLength(maxLength)
+{
+    setWindowFlags(Qt::Tool | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
+    setAttribute(Qt::WA_TranslucentBackground);
+    setModal(false);
+    resize(560, 76);
+    setStyleSheet(QStringLiteral(
+        "QDialog {"
+        "background: transparent;"
+        "}"
+        "QFrame#InputPanel {"
+        "background: rgba(246, 249, 253, 218);"
+        "border: 1px solid rgba(32, 33, 36, 38);"
+        "border-radius: 12px;"
+        "}"
+        "QTextEdit {"
+        "background: transparent;"
+        "color: #202124;"
+        "border: none;"
+        "padding: 8px 10px;"
+        "selection-background-color: rgba(66, 133, 244, 90);"
+        "font-size: 20px;"
+        "}"
+        "QPushButton {"
+        "min-width: 34px;"
+        "max-width: 34px;"
+        "min-height: 34px;"
+        "max-height: 34px;"
+        "border: 1px solid rgba(32, 33, 36, 45);"
+        "border-radius: 17px;"
+        "background: rgba(255, 255, 255, 236);"
+        "color: rgba(32, 33, 36, 190);"
+        "font-size: 18px;"
+        "font-weight: 600;"
+        "padding: 0;"
+        "}"
+        "QPushButton:hover {"
+        "background: rgba(255, 255, 255, 255);"
+        "}"
+        "QPushButton:disabled {"
+        "color: rgba(32, 33, 36, 80);"
+        "background: rgba(255, 255, 255, 170);"
+        "}"));
+
+    m_textEdit->setPlaceholderText(QStringLiteral("输入消息，Enter 发送，Shift+Enter 换行"));
+    m_textEdit->setLineWrapMode(QTextEdit::WidgetWidth);
+    m_textEdit->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    m_textEdit->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    m_textEdit->setFixedHeight(56);
+    m_textEdit->installEventFilter(this);
+    m_textEdit->viewport()->installEventFilter(this);
+
+    m_counterLabel->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
+    m_counterLabel->setStyleSheet(QStringLiteral("color: #b3261e; font-size: 12px;"));
+    m_counterLabel->setVisible(false);
+
+    connect(m_sendButton, &QPushButton::clicked, this, [this]() {
+        submitIfValid();
+    });
+    connect(m_textEdit, &QTextEdit::textChanged, this, [this]() {
+        updateCounter();
+    });
+
+    auto *panel = new QFrame(this);
+    panel->setObjectName(QStringLiteral("InputPanel"));
+    panel->installEventFilter(this);
+
+    auto *panelLayout = new QHBoxLayout(panel);
+    panelLayout->setContentsMargins(16, 6, 8, 6);
+    panelLayout->setSpacing(8);
+    panelLayout->addWidget(m_textEdit, 1);
+    panelLayout->addWidget(m_counterLabel);
+    panelLayout->addWidget(m_sendButton);
+
+    auto *layout = new QHBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->addWidget(panel);
+
+    updateCounter();
+    m_textEdit->setFocus();
+}
+
+QString ChatInputDialog::message() const
+{
+    return m_textEdit->toPlainText().trimmed();
+}
+
+void ChatInputDialog::setSubmitCallback(SubmitCallback callback)
+{
+    m_submitCallback = std::move(callback);
+}
+
+void ChatInputDialog::showAt(const QPoint &anchorPosition)
+{
+    move(anchorPosition.x() - width() / 2, anchorPosition.y() - height() / 2);
+    show();
+    raise();
+    activateWindow();
+    m_textEdit->setFocus();
+}
+
+bool ChatInputDialog::event(QEvent *event)
+{
+    if (event->type() == QEvent::WindowDeactivate)
+    {
+        hide();
+        return true;
+    }
+
+    return QDialog::event(event);
+}
+
+bool ChatInputDialog::eventFilter(QObject *watched, QEvent *event)
+{
+    if ((watched == m_textEdit || watched == m_textEdit->viewport()) && event->type() == QEvent::KeyPress)
+    {
+        auto *keyEvent = static_cast<QKeyEvent *>(event);
+        if (keyEvent->key() == Qt::Key_Return || keyEvent->key() == Qt::Key_Enter)
+        {
+            if (keyEvent->modifiers() & Qt::ShiftModifier)
+            {
+                return false;
+            }
+
+            submitIfValid();
+            return true;
+        }
+    }
+
+    if ((watched == m_textEdit->viewport() || watched == m_textEdit->parentWidget())
+        && event->type() == QEvent::MouseButtonPress)
+    {
+        auto *mouseEvent = static_cast<QMouseEvent *>(event);
+        if (mouseEvent->button() == Qt::LeftButton)
+        {
+            beginDrag(mouseEvent->globalPosition().toPoint());
+            return false;
+        }
+    }
+
+    if ((watched == m_textEdit->viewport() || watched == m_textEdit->parentWidget())
+        && event->type() == QEvent::MouseMove)
+    {
+        auto *mouseEvent = static_cast<QMouseEvent *>(event);
+        if (mouseEvent->buttons() & Qt::LeftButton)
+        {
+            return updateDrag(mouseEvent->globalPosition().toPoint());
+        }
+    }
+
+    if ((watched == m_textEdit->viewport() || watched == m_textEdit->parentWidget())
+        && event->type() == QEvent::MouseButtonRelease)
+    {
+        endDrag();
+    }
+
+    return QDialog::eventFilter(watched, event);
+}
+
+void ChatInputDialog::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton)
+    {
+        beginDrag(event->globalPosition().toPoint());
+    }
+
+    QDialog::mousePressEvent(event);
+}
+
+void ChatInputDialog::mouseMoveEvent(QMouseEvent *event)
+{
+    if ((event->buttons() & Qt::LeftButton) && updateDrag(event->globalPosition().toPoint()))
+    {
+        event->accept();
+        return;
+    }
+
+    QDialog::mouseMoveEvent(event);
+}
+
+void ChatInputDialog::mouseReleaseEvent(QMouseEvent *event)
+{
+    endDrag();
+    QDialog::mouseReleaseEvent(event);
+}
+
+bool ChatInputDialog::canSend() const
+{
+    const int length = message().size();
+    return length > 0 && (m_maxLength <= 0 || length <= m_maxLength);
+}
+
+bool ChatInputDialog::submitIfValid()
+{
+    if (!canSend())
+    {
+        return false;
+    }
+
+    const QString submittedMessage = message();
+    const bool accepted = m_submitCallback ? m_submitCallback(submittedMessage) : true;
+    if (accepted)
+    {
+        clearMessage();
+        show();
+        raise();
+        activateWindow();
+        m_textEdit->setFocus();
+    }
+
+    return accepted;
+}
+
+void ChatInputDialog::clearMessage()
+{
+    m_textEdit->clear();
+}
+
+void ChatInputDialog::updateCounter()
+{
+    const int length = message().size();
+    m_sendButton->setEnabled(canSend());
+
+    if (m_maxLength > 0)
+    {
+        m_counterLabel->setVisible(length > m_maxLength);
+        if (length > m_maxLength)
+        {
+            m_counterLabel->setText(QString::number(length) + QStringLiteral("/") + QString::number(m_maxLength));
+        }
+        return;
+    }
+
+    m_counterLabel->setVisible(false);
+}
+
+void ChatInputDialog::beginDrag(const QPoint &globalPosition)
+{
+    m_dragCandidate = true;
+    m_dragging = false;
+    m_dragStartPosition = globalPosition;
+    m_dragWindowPosition = pos();
+}
+
+bool ChatInputDialog::updateDrag(const QPoint &globalPosition)
+{
+    if (!m_dragCandidate)
+    {
+        return false;
+    }
+
+    const QPoint delta = globalPosition - m_dragStartPosition;
+    if (!m_dragging && delta.manhattanLength() < QApplication::startDragDistance())
+    {
+        return false;
+    }
+
+    m_dragging = true;
+    move(m_dragWindowPosition + delta);
+    return true;
+}
+
+void ChatInputDialog::endDrag()
+{
+    m_dragCandidate = false;
+    m_dragging = false;
+}
diff --git a/src/ui/ChatInputDialog.h b/src/ui/ChatInputDialog.h
new file mode 100644
index 0000000..919e7d2
--- /dev/null
+++ b/src/ui/ChatInputDialog.h
@@ -0,0 +1,51 @@
+#pragma once
+
+#include <QDialog>
+#include <QPoint>
+#include <QString>
+
+#include <functional>
+
+class QEvent;
+class QLabel;
+class QMouseEvent;
+class QPushButton;
+class QTextEdit;
+
+class ChatInputDialog : public QDialog
+{
+public:
+    using SubmitCallback = std::function<bool(const QString &)>;
+
+    explicit ChatInputDialog(int maxLength, QWidget *parent = nullptr);
+
+    QString message() const;
+    void setSubmitCallback(SubmitCallback callback);
+    void showAt(const QPoint &anchorPosition);
+
+protected:
+    bool event(QEvent *event) override;
+    bool eventFilter(QObject *watched, QEvent *event) override;
+    void mouseMoveEvent(QMouseEvent *event) override;
+    void mousePressEvent(QMouseEvent *event) override;
+    void mouseReleaseEvent(QMouseEvent *event) override;
+
+private:
+    bool canSend() const;
+    bool submitIfValid();
+    void clearMessage();
+    void updateCounter();
+    void beginDrag(const QPoint &globalPosition);
+    bool updateDrag(const QPoint &globalPosition);
+    void endDrag();
+
+    QTextEdit *m_textEdit = nullptr;
+    QLabel *m_counterLabel = nullptr;
+    QPushButton *m_sendButton = nullptr;
+    SubmitCallback m_submitCallback;
+    QPoint m_dragStartPosition;
+    QPoint m_dragWindowPosition;
+    int m_maxLength = 0;
+    bool m_dragging = false;
+    bool m_dragCandidate = false;
+};
diff --git a/src/ui/PetWindow.cpp b/src/ui/PetWindow.cpp
index a25e77c..cca7729 100644
--- a/src/ui/PetWindow.cpp
+++ b/src/ui/PetWindow.cpp
@@ -7,6 +7,7 @@
 #include "../config/SecretStore.h"
 #include "../util/Logger.h"
 #include "ChatBubble.h"
+#include "ChatInputDialog.h"
 #include "PetView.h"
 #include "SettingsDialog.h"
 
@@ -15,7 +16,7 @@
 #include <QCursor>
 #include <QDialog>
 #include <QGuiApplication>
-#include <QInputDialog>
+#include <QHideEvent>
 #include <QMenu>
 #include <QMouseEvent>
 #include <QPixmap>
@@ -41,6 +42,7 @@ QString previewImagePath()
 }
 
 constexpr int MaxUserMessageLength = 4000;
+constexpr int ChatInputLowerOffsetY = 48;
 
 bool populateRuntimeApiKey(AIConfig &config, QString *errorMessage)
 {
@@ -119,11 +121,49 @@ QString userVisibleErrorMessage(const ChatResponse &response)
 
     return message;
 }
+
+QString roleLabel(const QString &role)
+{
+    if (role == QStringLiteral("user"))
+    {
+        return QStringLiteral("你");
+    }
+
+    if (role == QStringLiteral("assistant"))
+    {
+        return QStringLiteral("桌宠");
+    }
+
+    return role;
+}
+
+QString formattedConversationHistory(const QVector<ChatMessage> &history)
+{
+    if (history.isEmpty())
+    {
+        return QStringLiteral("暂无对话记录。");
+    }
+
+    QStringList lines;
+    for (const ChatMessage &message : history)
+    {
+        const QString content = message.content.trimmed();
+        if (content.isEmpty())
+        {
+            continue;
+        }
+
+        lines.append(roleLabel(message.role) + QStringLiteral("：") + content);
+    }
+
+    return lines.isEmpty() ? QStringLiteral("暂无对话记录。") : lines.join(QStringLiteral("\n\n"));
+}
 }
 
 PetWindow::PetWindow(QWidget *parent)
     : QWidget(parent)
     , m_chatBubble(std::make_unique<ChatBubble>())
+    , m_chatInputDialog(std::make_unique<ChatInputDialog>(MaxUserMessageLength, this))
     , m_conversationManager(std::make_unique<ConversationManager>())
     , m_petView(new PetView(this))
     , m_dragging(false)
@@ -157,6 +197,11 @@ PetWindow::PetWindow(QWidget *parent)
         returnToIdleFromBehavior();
     });
 
+    QPointer<PetWindow> window(this);
+    m_chatInputDialog->setSubmitCallback([window](const QString &message) {
+        return !window.isNull() && window->submitChatMessage(message);
+    });
+
     loadInitialImage();
 }
 
@@ -212,6 +257,8 @@ void PetWindow::showBubbleMessage(const QString &message)
 
 void PetWindow::contextMenuEvent(QContextMenuEvent *event)
 {
+    resetBubbleAutoHideTimer();
+
     QMenu menu(this);
 
     QAction *topAction = menu.addAction(QStringLiteral("取消置顶"));
@@ -228,6 +275,7 @@ void PetWindow::contextMenuEvent(QContextMenuEvent *event)
     aiTestAction->setEnabled(!aiRequestRunning);
     QAction *chatAction = menu.addAction(QStringLiteral("聊天"));
     chatAction->setEnabled(!aiRequestRunning);
+    QAction *showConversationAction = menu.addAction(QStringLiteral("显示对话"));
     QAction *cancelAIAction = menu.addAction(QStringLiteral("取消 AI 请求"));
     cancelAIAction->setEnabled(aiRequestRunning);
     QAction *clearConversationAction = menu.addAction(QStringLiteral("清空对话"));
@@ -264,6 +312,10 @@ void PetWindow::contextMenuEvent(QContextMenuEvent *event)
     {
         startChat();
     }
+    else if (selectedAction == showConversationAction)
+    {
+        showConversationHistory();
+    }
     else if (selectedAction == cancelAIAction)
     {
         cancelActiveAIRequest();
@@ -350,29 +402,39 @@ void PetWindow::startChat()
         return;
     }
 
+    if (!m_chatInputDialog)
+    {
+        return;
+    }
+
+    m_chatInputDialog->showAt(chatInputAnchorPosition());
+}
+
+bool PetWindow::submitChatMessage(const QString &message)
+{
+    if (m_aiTestProvider && m_aiTestProvider->isBusy())
+    {
+        showBubbleMessage(QStringLiteral("AI 测试请求正在进行。"));
+        return false;
+    }
+
     if (!m_conversationManager || m_conversationManager->isBusy())
     {
         showBubbleMessage(QStringLiteral("AI 回复正在进行。"));
-        return;
+        return false;
     }
 
-    bool accepted = false;
-    const QString message = QInputDialog::getMultiLineText(
-        this,
-        QStringLiteral("聊天"),
-        QStringLiteral("输入消息"),
-        {},
-        &accepted).trimmed();
-    if (!accepted || message.isEmpty())
+    const QString trimmedMessage = message.trimmed();
+    if (trimmedMessage.isEmpty())
     {
-        return;
+        return false;
     }
 
-    if (message.size() > MaxUserMessageLength)
+    if (trimmedMessage.size() > MaxUserMessageLength)
     {
         playState(QStringLiteral("error"), false);
         showBubbleMessage(QStringLiteral("消息太长，请控制在 4000 字以内。"));
-        return;
+        return false;
     }
 
     ConfigManager configManager;
@@ -382,13 +444,13 @@ void PetWindow::startChat()
     {
         playState(QStringLiteral("error"), false);
         showBubbleMessage(errorMessage);
-        return;
+        return false;
     }
 
     if (!m_conversationManager->setProvider(std::make_unique<OpenAICompatibleProvider>(config)))
     {
         showBubbleMessage(QStringLiteral("AI 回复正在进行。"));
-        return;
+        return false;
     }
 
     playState(QStringLiteral("think"), false);
@@ -411,6 +473,8 @@ void PetWindow::startChat()
         window->playState(QStringLiteral("error"), false);
         window->showBubbleMessage(QStringLiteral("AI 回复失败：") + userVisibleErrorMessage(response));
     });
+
+    return true;
 }
 
 void PetWindow::clearConversation()
@@ -464,10 +528,60 @@ bool PetWindow::hasActiveAIRequest() const
         || (m_conversationManager && m_conversationManager->isBusy());
 }
 
+void PetWindow::showConversationHistory()
+{
+    const QVector<ChatMessage> history = m_conversationManager ? m_conversationManager->history() : QVector<ChatMessage>();
+    m_chatBubble->showMessage(formattedConversationHistory(history), bubbleAnchorPosition(), 30000);
+    m_chatBubble->setDismissOnExternalInteraction(true);
+}
+
+void PetWindow::resetBubbleAutoHideTimer()
+{
+    if (m_chatBubble)
+    {
+        m_chatBubble->resetAutoHideTimer();
+    }
+}
+
+QPoint PetWindow::chatInputAnchorPosition() const
+{
+    return frameGeometry().topLeft() + QPoint(width() / 2, height() / 2 + ChatInputLowerOffsetY);
+}
+
+void PetWindow::hideEvent(QHideEvent *event)
+{
+    if (m_chatBubble)
+    {
+        m_chatBubble->hideBubble();
+    }
+    if (m_chatInputDialog)
+    {
+        m_chatInputDialog->hide();
+    }
+
+    QWidget::hideEvent(event);
+}
+
+void PetWindow::mouseDoubleClickEvent(QMouseEvent *event)
+{
+    resetBubbleAutoHideTimer();
+    if (event->button() == Qt::LeftButton)
+    {
+        m_dragging = false;
+        playResolvedState(m_stateMachine.endDrag(), false);
+        startChat();
+        event->accept();
+        return;
+    }
+
+    QWidget::mouseDoubleClickEvent(event);
+}
+
 void PetWindow::mouseMoveEvent(QMouseEvent *event)
 {
     if (m_dragging && (event->buttons() & Qt::LeftButton))
     {
+        resetBubbleAutoHideTimer();
         move(event->globalPosition().toPoint() - m_dragOffset);
         updateBubblePosition();
         event->accept();
@@ -485,6 +599,8 @@ void PetWindow::moveEvent(QMoveEvent *event)
 
 void PetWindow::mousePressEvent(QMouseEvent *event)
 {
+    resetBubbleAutoHideTimer();
+
     if (event->button() == Qt::LeftButton)
     {
         m_dragging = true;
@@ -499,6 +615,8 @@ void PetWindow::mousePressEvent(QMouseEvent *event)
 
 void PetWindow::mouseReleaseEvent(QMouseEvent *event)
 {
+    resetBubbleAutoHideTimer();
+
     if (event->button() == Qt::LeftButton)
     {
         m_dragging = false;
diff --git a/src/ui/PetWindow.h b/src/ui/PetWindow.h
index 17817ff..81aed50 100644
--- a/src/ui/PetWindow.h
+++ b/src/ui/PetWindow.h
@@ -14,9 +14,11 @@
 #include <memory>
 
 class QMenu;
+class QHideEvent;
 class QMoveEvent;
 class QPixmap;
 class ChatBubble;
+class ChatInputDialog;
 class ConversationManager;
 class LLMProvider;
 class PetView;
@@ -35,6 +37,8 @@ public:
 
 protected:
     void contextMenuEvent(QContextMenuEvent *event) override;
+    void hideEvent(QHideEvent *event) override;
+    void mouseDoubleClickEvent(QMouseEvent *event) override;
     void mouseMoveEvent(QMouseEvent *event) override;
     void mousePressEvent(QMouseEvent *event) override;
     void mouseReleaseEvent(QMouseEvent *event) override;
@@ -46,9 +50,13 @@ private:
     void addStateTestActions(QMenu *menu);
     void startAITest();
     void startChat();
+    bool submitChatMessage(const QString &message);
     void clearConversation();
     void cancelActiveAIRequest();
+    void showConversationHistory();
     bool hasActiveAIRequest() const;
+    void resetBubbleAutoHideTimer();
+    QPoint chatInputAnchorPosition() const;
     void updateBubblePosition();
     QPoint bubbleAnchorPosition() const;
     void playState(const QString &stateName, bool centerWindow);
@@ -62,6 +70,7 @@ private:
     void setAlwaysOnTop(bool enabled);
 
     std::unique_ptr<ChatBubble> m_chatBubble;
+    std::unique_ptr<ChatInputDialog> m_chatInputDialog;
     std::unique_ptr<ConversationManager> m_conversationManager;
     std::unique_ptr<LLMProvider> m_aiTestProvider;
     PetView *m_petView;