diff --git a/src/Notes-master/src/net/micode/notes/model/ChatMessage.java b/src/Notes-master/src/net/micode/notes/model/ChatMessage.java
new file mode 100644
index 0000000..93f2775
--- /dev/null
+++ b/src/Notes-master/src/net/micode/notes/model/ChatMessage.java
@@ -0,0 +1,16 @@
+package net.micode.notes.model;
+
+public class ChatMessage {
+    public long id;
+    public int senderType; // 0:用户, 1:AI
+    public int msgType;    // 0:普通文本, 1:提醒卡片
+    public String content;
+    public long createdAt;
+
+    public ChatMessage(int senderType, int msgType, String content) {
+        this.senderType = senderType;
+        this.msgType = msgType;
+        this.content = content;
+        this.createdAt = System.currentTimeMillis();
+    }
+}
\ No newline at end of file
diff --git a/src/Notes-master/src/net/micode/notes/ui/AgendaAdapter.java b/src/Notes-master/src/net/micode/notes/ui/AgendaAdapter.java
new file mode 100644
index 0000000..65d42b9
--- /dev/null
+++ b/src/Notes-master/src/net/micode/notes/ui/AgendaAdapter.java
@@ -0,0 +1,103 @@
+package net.micode.notes.ui;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class AgendaAdapter extends RecyclerView.Adapter<AgendaAdapter.AgendaViewHolder> {
+
+    private Context mContext;
+    private List<AgendaItem> mData = new ArrayList<>();
+    private OnAgendaActionListener mListener;
+
+    // [关键修复] 定义接口
+    public interface OnAgendaActionListener {
+        void onToggleComplete(AgendaItem item);
+        void onDelete(AgendaItem item);
+    }
+
+    public void setOnAgendaActionListener(OnAgendaActionListener listener) {
+        this.mListener = listener;
+    }
+
+    public static class AgendaItem {
+        public long id;
+        public String title;
+        public String timeLabel;
+        public long startTime;
+        public boolean isCompleted;
+        public boolean isSpecificTime() {
+            return timeLabel != null && timeLabel.contains(":");
+        }
+    }
+
+    public AgendaAdapter(Context context) {
+        this.mContext = context;
+    }
+
+    public void updateData(List<AgendaItem> newList) {
+        Collections.sort(newList, (a, b) -> {
+            if (a.isCompleted != b.isCompleted) return a.isCompleted ? 1 : -1;
+            if (a.isSpecificTime() != b.isSpecificTime()) return a.isSpecificTime() ? -1 : 1;
+            return Long.compare(a.startTime, b.startTime);
+        });
+        this.mData = newList;
+        notifyDataSetChanged();
+    }
+
+    @NonNull
+    @Override
+    public AgendaViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(mContext).inflate(R.layout.agenda_item, parent, false);
+        return new AgendaViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull AgendaViewHolder holder, int position) {
+        AgendaItem item = mData.get(position);
+        holder.tvContent.setText(item.title);
+        holder.tvTime.setText(item.timeLabel);
+
+        if (item.isCompleted) {
+            holder.ivCheck.setImageResource(R.drawable.checkbox_checked);
+            holder.tvContent.setPaintFlags(holder.tvContent.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
+            holder.tvContent.setTextColor(Color.LTGRAY);
+        } else {
+            holder.ivCheck.setImageResource(R.drawable.checkbox_unchecked);
+            holder.tvContent.setPaintFlags(holder.tvContent.getPaintFlags() & (~Paint.STRIKE_THRU_TEXT_FLAG));
+            holder.tvContent.setTextColor(Color.parseColor("#333333"));
+        }
+
+        holder.ivCheck.setOnClickListener(v -> { if (mListener != null) mListener.onToggleComplete(item); });
+        holder.btnDelete.setOnClickListener(v -> { if (mListener != null) mListener.onDelete(item); });
+    }
+
+    @Override
+    public int getItemCount() { return mData.size(); }
+
+    public static class AgendaViewHolder extends RecyclerView.ViewHolder {
+        ImageView ivCheck, btnDelete;
+        TextView tvTime, tvContent;
+        public AgendaViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ivCheck = itemView.findViewById(R.id.iv_agenda_check);
+            tvTime = itemView.findViewById(R.id.tv_agenda_time);
+            tvContent = itemView.findViewById(R.id.tv_agenda_content);
+            btnDelete = itemView.findViewById(R.id.btn_agenda_delete);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Notes-master/src/net/micode/notes/ui/ChatAdapter.java b/src/Notes-master/src/net/micode/notes/ui/ChatAdapter.java
new file mode 100644
index 0000000..7882ace
--- /dev/null
+++ b/src/Notes-master/src/net/micode/notes/ui/ChatAdapter.java
@@ -0,0 +1,77 @@
+package net.micode.notes.ui;
+
+import android.graphics.Typeface;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+import net.micode.notes.R;
+import net.micode.notes.model.ChatMessage;
+import java.util.List;
+
+public class ChatAdapter extends RecyclerView.Adapter<ChatAdapter.ChatViewHolder> {
+    private List<ChatMessage> mMessages;
+
+    public ChatAdapter(List<ChatMessage> messages) {
+        this.mMessages = messages;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        ChatMessage msg = mMessages.get(position);
+        if (msg.senderType == 0) return 0; // 用户消息
+        if (msg.msgType == 1) return 2;    // 提醒卡片
+        return 1;                          // AI 普通回复
+    }
+
+    @NonNull
+    @Override
+    public ChatViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_chat_msg, parent, false);
+        return new ChatViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ChatViewHolder holder, int position) {
+        ChatMessage msg = mMessages.get(position);
+        int viewType = getItemViewType(position);
+
+        // 隐藏所有，根据类型显示
+        holder.leftLayout.setVisibility(View.GONE);
+        holder.rightLayout.setVisibility(View.GONE);
+
+        if (viewType == 0) { // 用户
+            holder.rightLayout.setVisibility(View.VISIBLE);
+            holder.tvRight.setText(msg.content);
+        } else { // AI 或 提醒
+            holder.leftLayout.setVisibility(View.VISIBLE);
+            holder.tvLeft.setText(msg.content);
+
+            if (viewType == 2) { // 提醒特殊样式
+                holder.tvLeft.setBackgroundResource(R.drawable.bg_bubble_reminder);
+                holder.tvLeft.setTypeface(null, Typeface.BOLD);
+                holder.tvLeft.setText("📅 日程提醒：\n" + msg.content);
+            } else {
+                holder.tvLeft.setBackgroundResource(R.drawable.bg_bubble_ai);
+                holder.tvLeft.setTypeface(null, Typeface.NORMAL);
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() { return mMessages.size(); }
+
+    static class ChatViewHolder extends RecyclerView.ViewHolder {
+        View leftLayout, rightLayout;
+        TextView tvLeft, tvRight;
+        ChatViewHolder(View v) {
+            super(v);
+            leftLayout = v.findViewById(R.id.ll_left_layout);
+            rightLayout = v.findViewById(R.id.ll_right_layout);
+            tvLeft = v.findViewById(R.id.tv_msg_left);
+            tvRight = v.findViewById(R.id.tv_msg_right);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Notes-master/src/net/micode/notes/ui/FloatingService.java b/src/Notes-master/src/net/micode/notes/ui/FloatingService.java
new file mode 100644
index 0000000..268064f
--- /dev/null
+++ b/src/Notes-master/src/net/micode/notes/ui/FloatingService.java
@@ -0,0 +1,109 @@
+package net.micode.notes.ui;
+
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.PixelFormat;
+import android.os.Build;
+import android.os.IBinder;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.WindowManager;
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+
+public class FloatingService extends Service {
+    private WindowManager windowManager;
+    private View floatingView;
+    private WindowManager.LayoutParams params;
+
+    @Override
+    public IBinder onBind(Intent intent) { return null; }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
+        floatingView = LayoutInflater.from(this).inflate(R.layout.floating_window, null);
+
+        // 设置布局参数
+        int layoutFlag;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            layoutFlag = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
+        } else {
+            layoutFlag = WindowManager.LayoutParams.TYPE_PHONE;
+        }
+
+        params = new WindowManager.LayoutParams(
+                WindowManager.LayoutParams.WRAP_CONTENT,
+                WindowManager.LayoutParams.WRAP_CONTENT,
+                layoutFlag,
+                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, // 保证外部可点击
+                PixelFormat.TRANSLUCENT
+        );
+
+        params.gravity = Gravity.TOP | Gravity.START;
+        params.x = 100;
+        params.y = 100;
+
+        // 挂载到窗口
+        windowManager.addView(floatingView, params);
+
+        // 设置交互逻辑
+        setupInteraction();
+    }
+
+    private void setupInteraction() {
+        View ball = floatingView.findViewById(R.id.iv_floating_ball);
+
+        ball.setOnTouchListener(new View.OnTouchListener() {
+            private int initialX, initialY;
+            private float initialTouchX, initialTouchY;
+            private long touchStartTime;
+
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+                switch (event.getAction()) {
+                    case MotionEvent.ACTION_DOWN:
+                        initialX = params.x;
+                        initialY = params.y;
+                        initialTouchX = event.getRawX();
+                        initialTouchY = event.getRawY();
+                        touchStartTime = System.currentTimeMillis();
+                        return true;
+
+                    case MotionEvent.ACTION_MOVE:
+                        params.x = initialX + (int) (event.getRawX() - initialTouchX);
+                        params.y = initialY + (int) (event.getRawY() - initialTouchY);
+                        windowManager.updateViewLayout(floatingView, params);
+                        return true;
+
+                    case MotionEvent.ACTION_UP:
+                        // 如果按下时间短且移动距离小，判定为点击
+                        if (System.currentTimeMillis() - touchStartTime < 200) {
+                            openNewNote();
+                        }
+                        return true;
+                }
+                return false;
+            }
+        });
+    }
+
+    private void openNewNote() {
+        Intent intent = new Intent(this, NoteEditActivity.class);
+        intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
+        intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, Notes.ID_ROOT_FOLDER);
+        // [核心] Service 调起 Activity 必须加此 Flag
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
+        startActivity(intent);
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (floatingView != null) windowManager.removeView(floatingView);
+    }
+}
\ No newline at end of file