Merge branch 'main' of https://github.youjiala.com/itcsx/Docker

# Conflicts: # uniapp/security/src/manifest.json
2026-11-08 17:11:15 +08:00
commit 25e10f7c10
@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WinFormsApp3
+{
+    internal class Class1
+    {
+    }
+}/*
+    // 这是正确、最简、不会报错的 NER 辅助类
+    public class NerInput
+    {
+        public string Text { get; set; }
+    }
+
+    public class NerOutput
+    {
+        // 不需要 Label！不会报错！
+        public string[] Words { get; set; }
+    }
+
+  var mlContext = new MLContext();
+
+            // ============================
+            // 关键：只做 分词 + 特征转换
+            // 绝对不加分类器，就不会要 Label
+            // ============================
+            var pipeline = mlContext.Transforms.Text.TokenizeIntoWords("Words", nameof(NerInput.Text));
+
+            // 空数据也不会报错
+            var emptyData = mlContext.Data.LoadFromEnumerable(new List<NerInput>());
+            var model = pipeline.Fit(emptyData);
+
+            // 预测引擎
+            var engine = mlContext.Model.CreatePredictionEngine<NerInput, NerOutput>(model);
+
+            // 测试
+            var result = engine.Predict(new NerInput
+            {
+                Text = "我和陈明今天去上海见张伟"
+            });
+
+            Console.WriteLine("分词结果：");
+            foreach (var word in result.Words)
+            {
+                Console.WriteLine("- " + word);
+            }
+  */
@@ -0,0 +1,260 @@
+namespace WinFormsApp3
+{
+    partial class Form1
+    {
+        /// <summary>
+        ///  Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        ///  Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        ///  Required method for Designer support - do not modify
+        ///  the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            tableLayoutPanel1 = new TableLayoutPanel();
+            webView21 = new Microsoft.Web.WebView2.WinForms.WebView2();
+            tableLayoutPanel2 = new TableLayoutPanel();
+            urlTxt = new TextBox();
+            goBut = new Button();
+            displayBut = new Button();
+            cssBut = new Button();
+            addLinkBut = new Button();
+            linkBut = new Button();
+            dlBut = new Button();
+            listBut = new Button();
+            statusStrip1 = new StatusStrip();
+            statusLbl = new ToolStripStatusLabel();
+            progressBar = new ToolStripProgressBar();
+            cancelBut = new ToolStripButton();
+            tableLayoutPanel1.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)webView21).BeginInit();
+            tableLayoutPanel2.SuspendLayout();
+            statusStrip1.SuspendLayout();
+            SuspendLayout();
+            // 
+            // tableLayoutPanel1
+            // 
+            tableLayoutPanel1.ColumnCount = 1;
+            tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100F));
+            tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, 20F));
+            tableLayoutPanel1.Controls.Add(webView21, 0, 1);
+            tableLayoutPanel1.Controls.Add(tableLayoutPanel2, 0, 0);
+            tableLayoutPanel1.Controls.Add(statusStrip1, 0, 2);
+            tableLayoutPanel1.Dock = DockStyle.Fill;
+            tableLayoutPanel1.Location = new Point(0, 0);
+            tableLayoutPanel1.Name = "tableLayoutPanel1";
+            tableLayoutPanel1.RowCount = 3;
+            tableLayoutPanel1.RowStyles.Add(new RowStyle());
+            tableLayoutPanel1.RowStyles.Add(new RowStyle(SizeType.Percent, 50F));
+            tableLayoutPanel1.RowStyles.Add(new RowStyle());
+            tableLayoutPanel1.Size = new Size(1416, 785);
+            tableLayoutPanel1.TabIndex = 1;
+            // 
+            // webView21
+            // 
+            webView21.AllowExternalDrop = true;
+            webView21.DefaultBackgroundColor = Color.White;
+            webView21.Dock = DockStyle.Fill;
+            webView21.Location = new Point(3, 38);
+            webView21.Name = "webView21";
+            webView21.Size = new Size(1410, 715);
+            webView21.TabIndex = 0;
+            webView21.ZoomFactor = 1D;
+            // 
+            // tableLayoutPanel2
+            // 
+            tableLayoutPanel2.AutoSize = true;
+            tableLayoutPanel2.ColumnCount = 8;
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100F));
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle());
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle());
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle());
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle());
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle());
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle());
+            tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle());
+            tableLayoutPanel2.Controls.Add(urlTxt, 0, 0);
+            tableLayoutPanel2.Controls.Add(goBut, 1, 0);
+            tableLayoutPanel2.Controls.Add(displayBut, 5, 0);
+            tableLayoutPanel2.Controls.Add(linkBut, 4, 0);
+            tableLayoutPanel2.Controls.Add(cssBut, 3, 0);
+            tableLayoutPanel2.Controls.Add(addLinkBut, 2, 0);
+            tableLayoutPanel2.Controls.Add(listBut, 6, 0);
+            tableLayoutPanel2.Controls.Add(dlBut, 7, 0);
+            tableLayoutPanel2.Dock = DockStyle.Fill;
+            tableLayoutPanel2.Location = new Point(3, 3);
+            tableLayoutPanel2.Name = "tableLayoutPanel2";
+            tableLayoutPanel2.RowCount = 1;
+            tableLayoutPanel2.RowStyles.Add(new RowStyle(SizeType.Percent, 100F));
+            tableLayoutPanel2.Size = new Size(1410, 29);
+            tableLayoutPanel2.TabIndex = 1;
+            // 
+            // urlTxt
+            // 
+            urlTxt.Dock = DockStyle.Fill;
+            urlTxt.Location = new Point(3, 3);
+            urlTxt.Name = "urlTxt";
+            urlTxt.Size = new Size(1134, 23);
+            urlTxt.TabIndex = 0;
+            // 
+            // goBut
+            // 
+            goBut.Image = Google_Chrome.Properties.Resources.ok_16;
+            goBut.Location = new Point(1143, 3);
+            goBut.Name = "goBut";
+            goBut.Size = new Size(55, 23);
+            goBut.TabIndex = 1;
+            goBut.UseVisualStyleBackColor = true;
+            goBut.Click += goBut_Click;
+            // 
+            // displayBut
+            // 
+            displayBut.Image = Google_Chrome.Properties.Resources.view_16;
+            displayBut.Location = new Point(1387, 3);
+            displayBut.Name = "displayBut";
+            displayBut.Size = new Size(20, 23);
+            displayBut.TabIndex = 1;
+            displayBut.UseVisualStyleBackColor = true;
+            displayBut.Click += displayBut_Click;
+            // 
+            // cssBut
+            // 
+            cssBut.Image = Google_Chrome.Properties.Resources.element;
+            cssBut.Location = new Point(1265, 3);
+            cssBut.Name = "cssBut";
+            cssBut.Size = new Size(55, 23);
+            cssBut.TabIndex = 1;
+            cssBut.UseVisualStyleBackColor = true;
+            cssBut.Click += cssBut_Click;
+            // 
+            // addLinkBut
+            // 
+            addLinkBut.Image = Google_Chrome.Properties.Resources.element_plus_16;
+            addLinkBut.Location = new Point(1204, 3);
+            addLinkBut.Name = "addLinkBut";
+            addLinkBut.Size = new Size(55, 23);
+            addLinkBut.TabIndex = 1;
+            addLinkBut.UseVisualStyleBackColor = true;
+            addLinkBut.Click += addLinkBut_Click;
+            // 
+            // linkBut
+            // 
+            linkBut.Image = Google_Chrome.Properties.Resources.page_link;
+            linkBut.Location = new Point(1326, 3);
+            linkBut.Name = "linkBut";
+            linkBut.Size = new Size(55, 23);
+            linkBut.TabIndex = 1;
+            linkBut.UseVisualStyleBackColor = true;
+            linkBut.Click += linkBut_Click;
+            // 
+            // dlBut
+            // 
+            dlBut.Image = Google_Chrome.Properties.Resources.save_16;
+            dlBut.Location = new Point(1382, 3);
+            dlBut.Name = "dlBut";
+            dlBut.Size = new Size(75, 23);
+            dlBut.TabIndex = 1;
+            dlBut.Text = "下载";
+            dlBut.TextImageRelation = TextImageRelation.ImageBeforeText;
+            dlBut.UseVisualStyleBackColor = true;
+            dlBut.Click += dlBut_Click;
+            // 
+            // listBut
+            // 
+            listBut.Image = Google_Chrome.Properties.Resources.search_16;
+            listBut.Location = new Point(1382, 3);
+            listBut.Name = "listBut";
+            listBut.Size = new Size(55, 23);
+            listBut.TabIndex = 1;
+            listBut.Text = "列表";
+            listBut.TextImageRelation = TextImageRelation.ImageBeforeText;
+            listBut.UseVisualStyleBackColor = true;
+            listBut.Click += listBut_Click;
+            // 
+            // statusStrip1
+            // 
+            statusStrip1.Items.AddRange(new ToolStripItem[] { statusLbl, progressBar, cancelBut });
+            statusStrip1.Location = new Point(0, 759);
+            statusStrip1.Name = "statusStrip1";
+            statusStrip1.Size = new Size(1410, 26);
+            statusStrip1.TabIndex = 2;
+            // 
+            // statusLbl
+            // 
+            statusLbl.Name = "statusLbl";
+            statusLbl.Size = new Size(1080, 21);
+            statusLbl.Spring = true;
+            statusLbl.Text = "就绪";
+            statusLbl.TextAlign = ContentAlignment.MiddleLeft;
+            // 
+            // progressBar
+            // 
+            progressBar.Name = "progressBar";
+            progressBar.Size = new Size(200, 18);
+            progressBar.Visible = false;
+            // 
+            // cancelBut
+            // 
+            cancelBut.DisplayStyle = ToolStripItemDisplayStyle.Text;
+            cancelBut.Enabled = false;
+            cancelBut.Name = "cancelBut";
+            cancelBut.Size = new Size(60, 23);
+            cancelBut.Text = "取消下载";
+            cancelBut.Click += cancelBut_Click;
+            // 
+            // Form1
+            // 
+            AutoScaleDimensions = new SizeF(7F, 17F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(1416, 785);
+            Controls.Add(tableLayoutPanel1);
+            Name = "Form1";
+            Text = "在线";
+            FormClosing += Form1_FormClosing;
+            Load += Form1_Load;
+            tableLayoutPanel1.ResumeLayout(false);
+            tableLayoutPanel1.PerformLayout();
+            ((System.ComponentModel.ISupportInitialize)webView21).EndInit();
+            tableLayoutPanel2.ResumeLayout(false);
+            tableLayoutPanel2.PerformLayout();
+            statusStrip1.ResumeLayout(false);
+            statusStrip1.PerformLayout();
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private TableLayoutPanel tableLayoutPanel1;
+        private Microsoft.Web.WebView2.WinForms.WebView2 webView21;
+        private TableLayoutPanel tableLayoutPanel2;
+        private TextBox urlTxt;
+        private Button goBut;
+        private Button displayBut;
+        private Button cssBut;
+        private Button addLinkBut;
+        private Button linkBut;
+        private Button dlBut;
+        private Button listBut;
+        private StatusStrip statusStrip1;
+        private ToolStripStatusLabel statusLbl;
+        private ToolStripProgressBar progressBar;
+        private ToolStripButton cancelBut;
+    }
+}
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
@@ -0,0 +1,71 @@
+namespace WinFormsApp3
+{
+    partial class Form2
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            cssTxt = new RichTextBox();
+            saveBut = new Button();
+            SuspendLayout();
+            // 
+            // cssTxt
+            // 
+            cssTxt.Location = new Point(12, 12);
+            cssTxt.Name = "cssTxt";
+            cssTxt.Size = new Size(772, 366);
+            cssTxt.TabIndex = 0;
+            cssTxt.Text = "";
+            // 
+            // saveBut
+            // 
+            saveBut.Image =Google_Chrome.Properties.Resources.save_16;
+            saveBut.Location = new Point(699, 395);
+            saveBut.Name = "saveBut";
+            saveBut.Size = new Size(57, 43);
+            saveBut.TabIndex = 1;
+            saveBut.UseVisualStyleBackColor = true;
+            saveBut.Click += saveBut_Click;
+            // 
+            // Form2
+            // 
+            AutoScaleDimensions = new SizeF(7F, 17F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(800, 450);
+            Controls.Add(saveBut);
+            Controls.Add(cssTxt);
+            Name = "Form2";
+            Text = "Form2";
+            Load += Form2_Load;
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private RichTextBox cssTxt;
+        private Button saveBut;
+    }
+}
@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace WinFormsApp3
+{
+    public partial class Form2 : Form
+    {
+        public string Path {  get; set; }   
+
+        public Form2()
+        {
+            InitializeComponent();
+        }
+
+        private void Form2_Load(object sender, EventArgs e)
+        {
+            if (File.Exists(Path))
+            {
+                cssTxt.Text = File.ReadAllText(Path);
+            }
+        }
+
+        private void saveBut_Click(object sender, EventArgs e)
+        {
+            File.WriteAllText(Path, cssTxt.Text);
+
+            this.Close();
+        }
+    }
+}
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
@@ -0,0 +1,56 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <!-- _hostest 是独立测试项目，不能被主项目编译 -->
+    <Compile Remove="_hostest/**/*.cs" />
+    <None Remove="_hostest/**/*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.ML" Version="5.0.0" />
+    <PackageReference Include="Microsoft.ML.OnnxRuntime" Version="1.26.0" />
+    <PackageReference Include="Microsoft.ML.OnnxTransformer" Version="5.0.0" />
+    <PackageReference Include="Microsoft.ML.Tokenizers" Version="2.0.0" />
+    <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3179.45" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- 页面注入脚本：必须拷到输出目录，下载按钮靠它们嗅探视频真实地址 -->
+    <None Update="Resources\media_sniffer.js">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Resources\video_button.js">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Resources\video_grab.js">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="ffmpeg.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Update="Properties\Resources.Designer.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Update="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Compile Update="Form1.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Update="Form2.cs">
+      <SubType>Form</SubType>
+    </Compile>
+  </ItemGroup>
+</Project>
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 18
+VisualStudioVersion = 18.11.12328.437 stable
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Google Chrome", "Google Chrome.csproj", "{CF401873-0387-4EB8-85E3-9B757EF9EA54}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CF401873-0387-4EB8-85E3-9B757EF9EA54}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CF401873-0387-4EB8-85E3-9B757EF9EA54}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CF401873-0387-4EB8-85E3-9B757EF9EA54}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CF401873-0387-4EB8-85E3-9B757EF9EA54}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {0AF3BB1F-186C-4D9D-8E04-1935ECCD5E4A}
+	EndGlobalSection
+EndGlobal
@@ -0,0 +1,27 @@
+using System.Diagnostics;
+
+namespace WinFormsApp3
+{
+    /// <summary>
+    /// 截图预览诊断日志：exe 目录下 preview_debug.log。
+    /// 挂起类问题光看界面定位不到，必须把每一步（含线程号）落到磁盘上。
+    /// </summary>
+    public static class PreviewLog
+    {
+        private static readonly object Gate = new();
+        private static readonly string FilePath = Path.Combine(AppContext.BaseDirectory, "preview_debug.log");
+
+        public static void Write(string message)
+        {
+            string line = $"{DateTime.Now:HH:mm:ss.fff} [T{Thread.CurrentThread.ManagedThreadId:D2}] {message}";
+            try
+            {
+                lock (Gate) File.AppendAllText(FilePath, line + Environment.NewLine);
+            }
+            catch
+            {
+                // 日志写失败不影响功能
+            }
+        }
+    }
+}
@@ -0,0 +1,109 @@
+using Microsoft.ML;
+using Microsoft.ML.Data;
+using Microsoft.ML.Transforms.Onnx;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using WinFormsApp3;
+
+//https://huggingface.co/protectai/gyr66-bert-base-chinese-finetuned-ner-onnx/tree/main
+//model.onnx
+//vocab.txt
+
+namespace WinFormsApp3
+{
+    class Program
+    {
+        [STAThread] // ← 加上这个，99% 立刻解决你的错误
+        static int Main(string[] args)
+        {
+            // 全局未处理异常兜底：写日志而不是直接闪退，放到最前面
+            AppDomain.CurrentDomain.UnhandledException += (s, e) =>
+            {
+                try { File.WriteAllText("crash.log", $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss}] {(e.IsTerminating ? "FATAL" : "NON-FATAL")}\n{e.ExceptionObject}"); }
+                catch { }
+            };
+
+            // 命令行下载：WinFormsApp3.exe --download <视频地址> [--out 保存路径] [--referer 页面地址]
+            if (args.Length > 0 && string.Equals(args[0], "--download", StringComparison.OrdinalIgnoreCase))
+            {
+                // 下载丢给线程池线程去跑，不要在 STA 主线程上等待异步，否则 COM 线程模式会冲突
+                return Task.Run(() => DownloadCliAsync(args)).GetAwaiter().GetResult();
+            }
+
+            ApplicationConfiguration.Initialize();
+            try
+            {
+                Application.Run(new Form1());
+            }
+            catch (Exception ex)
+            {
+                File.WriteAllText("crash.log", $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss}] Application.Run\n{ex}");
+                throw;
+            }
+            return 0;
+        }
+
+        [DllImport("kernel32.dll", SetLastError = true)]
+        private static extern bool AttachConsole(int dwProcessId);
+
+        private const int AttachParentProcess = -1;
+
+        /// <summary>
+        /// 命令行下载入口：不创建窗体、不初始化 WebView2，直接把地址下完就退出，方便脚本化验证。
+        /// </summary>
+        private static async Task<int> DownloadCliAsync(string[] args)
+        {
+            // WinExe 默认没有控制台，Attach 到父进程的输出才能在终端里看到结果
+            AttachConsole(AttachParentProcess);
+
+            string url = args.Length > 1 ? args[1] : string.Empty;
+            if (string.IsNullOrWhiteSpace(url) || url.StartsWith("--", StringComparison.Ordinal))
+            {
+                Console.Error.WriteLine("用法: WinFormsApp3.exe --download <视频地址> [--out 保存路径] [--referer 页面地址]");
+                return 2;
+            }
+
+            string? referer = GetOption(args, "--referer");
+            string? outPath = GetOption(args, "--out");
+            if (string.IsNullOrWhiteSpace(outPath))
+            {
+                outPath = Path.Combine(Path.GetTempPath(), new VideoDownloader(referer).SuggestedFileName(url, null));
+            }
+
+            using CancellationTokenSource cts = new(TimeSpan.FromMinutes(15));
+            Progress<DownloadProgress> progress = new(message => Console.WriteLine(message.Message));
+
+            try
+            {
+                VideoDownloader downloader = new(referer);
+                DownloadResult result = await downloader.DownloadAsync(url, outPath!, progress, cts.Token);
+                Console.WriteLine($"OK file={result.FilePath} bytes={result.Bytes} converted={result.Converted}");
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Console.Error.WriteLine($"FAIL {ex.GetType().Name}: {ex.Message}");
+                return 1;
+            }
+        }
+
+        /// <summary>
+        /// 取 --out / --referer 这类"选项 值"形式的参数。
+        /// </summary>
+        private static string? GetOption(string[] args, string name)
+        {
+            for (int i = 0; i < args.Length - 1; i++)
+            {
+                if (string.Equals(args[i], name, StringComparison.OrdinalIgnoreCase))
+                {
+                    return args[i + 1];
+                }
+            }
+
+            return null;
+        }
+    }
+}
@@ -0,0 +1,133 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     這段程式碼是由工具產生的。
+//     執行階段版本:4.0.30319.42000
+//
+//     對這個檔案所做的變更可能會造成錯誤的行為，而且如果重新產生程式碼，
+//     變更將會遺失。
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Google_Chrome.Properties {
+    using System;
+    
+    
+    /// <summary>
+    ///   用於查詢當地語系化字串等的強類型資源類別。
+    /// </summary>
+    // 這個類別是自動產生的，是利用 StronglyTypedResourceBuilder
+    // 類別透過 ResGen 或 Visual Studio 這類工具。
+    // 若要加入或移除成員，請編輯您的 .ResX 檔，然後重新執行 ResGen
+    // (利用 /str 選項)，或重建您的 VS 專案。
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "18.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        /// <summary>
+        ///   傳回這個類別使用的快取的 ResourceManager 執行個體。
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Google_Chrome.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   覆寫目前執行緒的 CurrentUICulture 屬性，對象是所有
+        ///   使用這個強類型資源類別的資源查閱。
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+        
+        /// <summary>
+        ///   查詢類型 System.Drawing.Bitmap 的當地語系化資源。
+        /// </summary>
+        internal static System.Drawing.Bitmap element {
+            get {
+                object obj = ResourceManager.GetObject("element", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   查詢類型 System.Drawing.Bitmap 的當地語系化資源。
+        /// </summary>
+        internal static System.Drawing.Bitmap element_plus_16 {
+            get {
+                object obj = ResourceManager.GetObject("element_plus_16", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   查詢類型 System.Drawing.Bitmap 的當地語系化資源。
+        /// </summary>
+        internal static System.Drawing.Bitmap ok_16 {
+            get {
+                object obj = ResourceManager.GetObject("ok_16", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   查詢類型 System.Drawing.Bitmap 的當地語系化資源。
+        /// </summary>
+        internal static System.Drawing.Bitmap page_link {
+            get {
+                object obj = ResourceManager.GetObject("page_link", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   查詢類型 System.Drawing.Bitmap 的當地語系化資源。
+        /// </summary>
+        internal static System.Drawing.Bitmap save_16 {
+            get {
+                object obj = ResourceManager.GetObject("save_16", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   查詢類型 System.Drawing.Bitmap 的當地語系化資源。
+        /// </summary>
+        internal static System.Drawing.Bitmap search_16 {
+            get {
+                object obj = ResourceManager.GetObject("search_16", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   查詢類型 System.Drawing.Bitmap 的當地語系化資源。
+        /// </summary>
+        internal static System.Drawing.Bitmap view_16 {
+            get {
+                object obj = ResourceManager.GetObject("view_16", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+    }
+}
@@ -0,0 +1,142 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
+  <data name="view_16" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\view_16.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="search_16" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\search_16.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="ok_16" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\ok_16.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="element_plus_16" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\element_plus_16.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="page_link" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\page_link.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="element" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\element.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="save_16" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\save_16.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+</root>
@@ -0,0 +1,144 @@
+// 资源嗅探脚本：在安装页面播放器脚本之前接管 fetch / XMLHttpRequest / createObjectURL，
+// 把真正被下载的媒体地址（mp4 / m3u8 等）回报给宿主程序，用于"下载视频"按钮。
+(function () {
+  if (window.__mediaSniffInstalled) return;
+  window.__mediaSniffInstalled = true;
+
+  window.__mediaUrls = [];
+  window.__m3u8Blobs = [];
+
+  var MEDIA_EXT =
+    /\.(mp4|flv|m3u8|mpd|mkv|mov|m4v|webm|f4v|3gp|mpg|mpeg|ts)(\?|#|$)/i;
+  var PLAIN_EXT =
+    /\.(jpg|jpeg|png|gif|webp|ico|svg|bmp|css|js|json|woff2?|ttf|map|txt)(\?|#|$)/i;
+
+  function isMediaUrl(u) {
+    if (!u) return false;
+    u = String(u);
+    if (u.indexOf("blob:") === 0 || u.indexOf("data:") === 0) return false;
+    if (PLAIN_EXT.test(u)) return false;
+    return MEDIA_EXT.test(u) || /\/(video|vod|playback|media)[\/-]/i.test(u);
+  }
+
+  function absUrl(u) {
+    try {
+      return new URL(String(u), location.href).href;
+    } catch (e) {
+      return String(u);
+    }
+  }
+
+  function post(msg) {
+    try {
+      if (
+        window.chrome &&
+        window.chrome.webview &&
+        window.chrome.webview.postMessage
+      ) {
+        window.chrome.webview.postMessage(JSON.stringify(msg));
+      }
+    } catch (e) {}
+  }
+
+  function remember(text) {
+    if (!text || typeof text !== "string") return;
+    if (text.indexOf("#EXTM3U") < 0) return;
+    if (window.__m3u8Blobs.indexOf(text) >= 0) return;
+    window.__m3u8Blobs.push(text);
+    post({ type: "hlsText", text: text });
+  }
+
+  function report(u) {
+    try {
+      var full = absUrl(u);
+      if (!isMediaUrl(full)) return;
+      if (window.__mediaUrls.indexOf(full) >= 0) return;
+      window.__mediaUrls.push(full);
+      // base 是发出这个请求的文档地址：播放器常在跨域 iframe 里，
+      // 宿主必须用它当 Referer，用顶层页面地址会被防盗链判为非法来源
+      post({ type: "media", url: full, base: location.href });
+    } catch (e) {}
+  }
+
+  window.__reportMedia = report;
+  window.__rememberHlsText = remember;
+
+  // 抖音等站点会用 atob(base64) 把播放地址还原出来，这里顺手抓一份解码结果
+  try {
+    var origAtob = window.atob;
+    if (origAtob) {
+      window.atob = function (s) {
+        var r = origAtob.apply(this, arguments);
+        try {
+          if (r && typeof r === "string") {
+            if (r.indexOf("#EXTM3U") >= 0) remember(r);
+            else if (isMediaUrl(r)) report(r);
+          }
+        } catch (e) {}
+        return r;
+      };
+    }
+  } catch (e) {}
+
+  try {
+    var origFetch = window.fetch;
+    if (origFetch) {
+      window.fetch = function (input, init) {
+        try {
+          var u =
+            typeof input === "string" || input instanceof URL
+              ? input
+              : input && input.url;
+          if (u) report(u);
+        } catch (e) {}
+        return origFetch.apply(this, arguments);
+      };
+    }
+  } catch (e) {}
+
+  try {
+    var xhrOpen = XMLHttpRequest.prototype.open;
+    var xhrSend = XMLHttpRequest.prototype.send;
+    XMLHttpRequest.prototype.open = function (method, u) {
+      try {
+        if (u) report(u);
+      } catch (e) {}
+      return xhrOpen.apply(this, arguments);
+    };
+    XMLHttpRequest.prototype.send = function () {
+      var xhr = this;
+      try {
+        xhr.addEventListener("load", function () {
+          try {
+            if (xhr.responseType === "" || xhr.responseType === "text") {
+              remember(xhr.responseText);
+            } else if (
+              xhr.responseType === "blob" &&
+              xhr.response &&
+              xhr.response.text
+            ) {
+              xhr.response.text().then(remember);
+            }
+          } catch (e) {}
+        });
+      } catch (e) {}
+      return xhrSend.apply(this, arguments);
+    };
+  } catch (e) {}
+
+  // MSE 播放时 video.src 只能是 blob:，抓不到 http 地址，所以靠上面的分片嗅探兜底；
+  // 这里额外记录 createObjectURL 的调用，方便识别"确实在用 MSE"。
+  try {
+    var ocu = window.URL && window.URL.createObjectURL;
+    if (ocu) {
+      window.URL.createObjectURL = function (obj) {
+        var u = ocu.apply(this, arguments);
+        try {
+          window.__usesMse = true;
+          if (obj && typeof obj.text === "function") obj.text().then(remember);
+        } catch (e) {}
+        return u;
+      };
+    }
+  } catch (e) {}
+})();
@@ -0,0 +1,80 @@
+// 在页面里注入一个悬浮"下载视频"按钮，贴在当前视频播放器右下角。
+// 点击后通过 postMessage 通知宿主程序开始下载流程。
+(function () {
+  var BTN_ID = "qz-video-download-btn";
+
+  function post(msg) {
+    try {
+      if (
+        window.chrome &&
+        window.chrome.webview &&
+        window.chrome.webview.postMessage
+      ) {
+        window.chrome.webview.postMessage(JSON.stringify(msg));
+      }
+    } catch (e) {}
+  }
+
+  function bigVideo() {
+    var vids = document.querySelectorAll("video");
+    var best = null,
+      bestArea = 0;
+    for (var i = 0; i < vids.length; i++) {
+      var r = vids[i].getBoundingClientRect();
+      var area = r.width * r.height;
+      if (r.width > 120 && r.height > 60 && area > bestArea) {
+        best = vids[i];
+        bestArea = area;
+      }
+    }
+    return best;
+  }
+
+  function ensureButton() {
+    var btn = document.getElementById(BTN_ID);
+    var v = bigVideo();
+
+    if (!btn && v) {
+      btn = document.createElement("button");
+      btn.id = BTN_ID;
+      btn.type = "button";
+      btn.innerText = "下载视频";
+      btn.style.cssText =
+        "position:fixed;z-index:2147483647;padding:5px 12px;border:0;border-radius:16px;" +
+        "background:#ff2d55;color:#fff;font-size:13px;line-height:1.4;cursor:pointer;" +
+        'box-shadow:0 2px 8px rgba(0,0,0,.35);font-family:system-ui,"Microsoft YaHei",sans-serif;';
+      btn.addEventListener(
+        "click",
+        function (e) {
+          e.preventDefault();
+          e.stopPropagation();
+          post({ type: "downloadClick", pageUrl: location.href });
+        },
+        true,
+      );
+      document.documentElement.appendChild(btn);
+    }
+
+    if (btn) {
+      if (!v) {
+        btn.style.display = "none";
+        return;
+      }
+      var r = v.getBoundingClientRect();
+      btn.style.display = "block";
+      btn.style.left = Math.max(8, r.right - btn.offsetWidth - 12) + "px";
+      btn.style.top = Math.max(8, r.bottom - btn.offsetHeight - 12) + "px";
+    }
+  }
+
+  // 播放进度变化时（抖音翻页、切换清晰度）重新定位
+  document.addEventListener("timeupdate", ensureButton, true);
+  window.addEventListener("resize", ensureButton, true);
+  window.addEventListener("scroll", ensureButton, true);
+  document.addEventListener("mouseover", ensureButton, true);
+
+  if (!window.__downloadBtnTimer) {
+    window.__downloadBtnTimer = setInterval(ensureButton, 800);
+  }
+  ensureButton();
+})();
@@ -0,0 +1,132 @@
+// 点击"下载视频"时执行：优先从页面内嵌数据 RENDER_DATA 精确提取当前视频地址，
+// 其次才用嗅探列表兜底。
+(function () {
+  try {
+    var pageUrl = location.href;
+
+    // 从 URL 提取视频 ID
+    var videoId = "";
+    var m = pageUrl.match(/[?&]modal_id=(\d+)/);
+    if (m) videoId = m[1];
+    if (!videoId) {
+      var m0 = pageUrl.match(/[?&]aweme_id=(\d+)/);
+      if (m0) videoId = m0[1];
+    }
+    if (!videoId) {
+      var m2 = pageUrl.match(/\/(?:video|note)\/(\d+)/);
+      if (m2) videoId = m2[1];
+    }
+
+    // === 方案一：从 RENDER_DATA 里精确找当前视频的播放地址 ===
+    var renderVideoUrl = "";
+    var renderAudioUrl = "";
+    try {
+      var rd = document.getElementById("RENDER_DATA");
+      if (rd && rd.textContent) {
+        var decoded = decodeURIComponent(rd.textContent);
+        // 在 JSON 里找 aweme_id 等于 videoId 的节点，提取其 video.play_addr 或 play_addr 列表
+        // 用正则粗匹配，避免完整 JSON 解析的复杂性
+        var idx = decoded.indexOf(videoId);
+        while (idx >= 0) {
+          // 在这个 ID 附近找 playApi / play_addr / url_list
+          var chunk = decoded.substring(Math.max(0, idx - 200), idx + 5000);
+          // 找 DASH 格式的视频轨和音频轨
+          var vMatches = chunk.match(/https?:\/\/[^"\\]+media-video[^"\\]*/gi);
+          var aMatches = chunk.match(/https?:\/\/[^"\\]+media-audio[^"\\]*/gi);
+          if (vMatches && vMatches.length) {
+            renderVideoUrl = vMatches[vMatches.length - 1];
+            if (aMatches && aMatches.length) {
+              renderAudioUrl = aMatches[aMatches.length - 1];
+            }
+            break;
+          }
+          // 找普通 mp4 直链
+          var mp4Matches = chunk.match(/https?:\/\/[^"\\]*\.mp4[^"\\]*/gi);
+          if (mp4Matches && mp4Matches.length) {
+            renderVideoUrl = mp4Matches[mp4Matches.length - 1];
+            break;
+          }
+          idx = decoded.indexOf(videoId, idx + 1);
+        }
+      }
+    } catch (e) { /* RENDER_DATA 解析失败就走嗅探兜底 */ }
+
+    // === 方案二：选正在播放的 <video> 元素 ===
+    var vids = Array.prototype.slice.call(document.querySelectorAll("video"));
+    var best = null;
+    for (var i = 0; i < vids.length; i++) {
+      var v = vids[i];
+      if (!v.paused && v.currentTime > 0) { best = v; break; }
+    }
+    if (!best) {
+      for (var j = 0; j < vids.length; j++) {
+        var v2 = vids[j];
+        if (v2.videoWidth > 0 || (!isNaN(v2.duration) && v2.duration > 0 && v2.currentTime > 0)) {
+          best = v2;
+          break;
+        }
+      }
+    }
+    if (!best) best = vids[0];
+
+    var current = "";
+    var playable = true;
+    if (best) {
+      current = best.currentSrc || best.src || "";
+      if (!current) {
+        var s = best.querySelector && best.querySelector("source");
+        if (s) current = s.src || s.getAttribute("src") || "";
+      }
+      if (best.networkState === 0) playable = false;
+    }
+
+    // === 方案三：嗅探列表兜底 ===
+    var all = window.__mediaUrls || [];
+    var videoTracks = [];
+    var audioTracks = [];
+    var otherMedia = [];
+    for (var k = 0; k < all.length; k++) {
+      var u = all[k];
+      if (/media-video/i.test(u)) videoTracks.push(u);
+      else if (/media-audio/i.test(u)) audioTracks.push(u);
+      else otherMedia.push(u);
+    }
+
+    function pickLast(arr) {
+      return arr.length ? arr[arr.length - 1] : "";
+    }
+
+    var dashVideo = pickLast(videoTracks);
+    var dashAudio = pickLast(audioTracks);
+
+    // 如果 RENDER_DATA 找到了，优先用它
+    if (renderVideoUrl) {
+      dashVideo = renderVideoUrl;
+      if (renderAudioUrl) dashAudio = renderAudioUrl;
+    }
+
+    var title = document.title || "";
+    var h1 = document.querySelector("h1");
+    if (h1 && h1.innerText) title = h1.innerText;
+
+    return JSON.stringify({
+      current: current || "",
+      playable: playable,
+      usesMse: !!window.__usesMse || /^blob:/i.test(current),
+      title: title,
+      pageUrl: pageUrl,
+      videoId: videoId,
+      sniffed: otherMedia.slice(-60),
+      dashVideo: dashVideo,
+      dashAudio: dashAudio,
+      m3u8Blobs: (window.__m3u8Blobs || []).slice(-1),
+    });
+  } catch (e) {
+    return JSON.stringify({
+      current: "",
+      title: document.title || "",
+      pageUrl: location.href,
+      error: String(e),
+    });
+  }
+})();
@@ -0,0 +1,886 @@
+using System.Diagnostics;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+
+namespace WinFormsApp3
+{
+    /// <summary>
+    /// 下载进度：文字说明 + 可选的百分比（0~1）。
+    /// </summary>
+    public record DownloadProgress(string Message, double? Ratio);
+
+    /// <summary>
+    /// 下载结果。
+    /// </summary>
+    /// <param name="FilePath">最终落盘的文件路径（HLS 转封装后可能改变扩展名）。</param>
+    /// <param name="Bytes">写出的字节数。</param>
+    /// <param name="Converted">是否由 ffmpeg 把 ts 转封装为 mp4。</param>
+    public record DownloadResult(string FilePath, long Bytes, bool Converted);
+
+    /// <summary>
+    /// 视频下载器：支持直链（mp4/flv/ts…）与 HLS（m3u8）分片合并下载。
+    /// 请求时带上当前页面 Referer，抖音等站点校验 Referer 后才允许访问播放地址。
+    /// </summary>
+    public class VideoDownloader
+    {
+        private const string UserAgent =
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.0.0";
+
+        private static readonly Regex CharsetRx = new(@"charset\s*=\s*""?([\w-]+)""?", RegexOptions.IgnoreCase);
+
+        private static readonly string[] MediaExtensions =
+            [".mp4", ".flv", ".m3u8", ".mpd", ".mkv", ".mov", ".m4v", ".webm", ".f4v", ".3gp", ".ts", ".mpg", ".mpeg"];
+
+        /// <summary>
+        /// 整片容器格式。这些后缀永远不能当作 HLS 分片，否则 /video/xxx.flv 这类地址会被误删。
+        /// </summary>
+        private static readonly string[] WholeVideoExtensions =
+            [".mp4", ".flv", ".mkv", ".mov", ".webm", ".m4v", ".f4v", ".3gp", ".avi", ".rmvb", ".mpg", ".mpeg", ".m3u8", ".mpd"];
+
+        private readonly string? _referer;
+        private readonly string? _cookie;
+
+        /// <param name="referer">播放器所在页面的地址，不是顶层页面地址（播放器常在跨域 iframe 里）。</param>
+        /// <param name="cookie">从 WebView2 配置文件里取出的 Cookie，部分站点没 Cookie 直接给空文件。</param>
+        public VideoDownloader(string? referer, string? cookie = null)
+        {
+            if (!string.IsNullOrWhiteSpace(referer) && Uri.TryCreate(referer, UriKind.Absolute, out var u)
+                && !string.IsNullOrEmpty(u.Host))
+            {
+                // 防盗链一般只校来源站点，保留完整路径反而更容易被判定为非法来源；
+                // 用 Authority 而不是 Host，带端口的站点把端口去掉后来源就对不上了
+                _referer = $"{u.Scheme}://{u.Authority}/";
+            }
+
+            if (!string.IsNullOrWhiteSpace(cookie)) _cookie = cookie;
+        }
+
+        public static bool IsHlsUrl(string url) =>
+            !string.IsNullOrEmpty(url) && Regex.IsMatch(url, @"\.m3u8(\?|#|$)", RegexOptions.IgnoreCase);
+
+        /// <summary>
+        /// 判断是否是 DASH 纯音频轨地址（抖音 .../media-audio-xxx/...）。
+        /// 这种地址单独下载出来没有画面，必须和视频轨合并。
+        /// </summary>
+        public static bool IsDashAudioOnly(string? url) =>
+            !string.IsNullOrEmpty(url) && Regex.IsMatch(url, @"/media-audio[/-]", RegexOptions.IgnoreCase);
+
+        /// <summary>
+        /// 判断是否是 DASH 纯视频轨地址（抖音 .../media-video-xxx/...）。
+        /// 这种地址单独下载出来没有声音，需要配音频轨。
+        /// </summary>
+        public static bool IsDashVideoOnly(string? url) =>
+            !string.IsNullOrEmpty(url) && Regex.IsMatch(url, @"/media-video[/-]", RegexOptions.IgnoreCase);
+
+        /// <summary>
+        /// 判断是否是 HLS 分片（合并播放列表可用，但单独下载没有意义）。
+        /// 只认分片特有的后缀与编号形式，不能拿路径里的 video / seg 字样当依据，
+        /// 否则 /video/xxx.flv 这种整片地址会被当成分片删掉。
+        /// </summary>
+        public static bool IsSegmentUrl(string url)
+        {
+            if (string.IsNullOrEmpty(url)) return false;
+
+            var path = Uri.TryCreate(url, UriKind.Absolute, out var u) ? u.AbsolutePath.ToLowerInvariant() : url.ToLowerInvariant();
+            var extension = Path.GetExtension(path);
+
+            // 没有扩展名的地址多为接口型直链（如抖音），当作整片
+            if (extension.Length == 0) return false;
+            if (WholeVideoExtensions.Any(e => extension == e)) return false;
+
+            return extension is ".ts" or ".m4s" or ".init" or ".m2ts" or ".aac" or ".mp3"
+                || Regex.IsMatch(path, @"(seg|chunk|part|fragment|f)[-_.]?\d+");
+        }
+
+        public static bool LooksLikeMedia(string? url)
+        {
+            if (string.IsNullOrWhiteSpace(url)) return false;
+            if (url.StartsWith("blob:", StringComparison.OrdinalIgnoreCase) ||
+                url.StartsWith("data:", StringComparison.OrdinalIgnoreCase)) return false;
+            if (!Uri.TryCreate(url, UriKind.Absolute, out var u)) return false;
+            if (u.Scheme != Uri.UriSchemeHttp && u.Scheme != Uri.UriSchemeHttps) return false;
+
+            var path = u.AbsolutePath.ToLowerInvariant();
+            if (Regex.IsMatch(path, @"\.(jpg|jpeg|png|gif|webp|ico|svg|css|js|json|woff2?|ttf|map)$")) return false;
+            if (MediaExtensions.Any(e => path.EndsWith(e))) return true;
+            return Regex.IsMatch(path, @"/(video|vod|playback|media)[/-]");
+        }
+
+        /// <summary>
+        /// 根据地址推断保存扩展名；m3u8 会合并成单个文件，有 ffmpeg 时转 mp4，否则输出 ts。
+        /// </summary>
+        public static string ExtensionFor(string url)
+        {
+            var raw = RawExtension(url);
+            if (raw == ".m3u8" || (raw.Length == 0 && IsHlsUrl(url))) return HasFfmpeg() ? ".mp4" : ".ts";
+            if (raw.Length == 0) return ".mp4";
+            return raw;
+        }
+
+        public static string RawExtension(string url)
+        {
+            try
+            {
+                return Path.GetExtension(new Uri(url).AbsolutePath).ToLowerInvariant();
+            }
+            catch
+            {
+                return "";
+            }
+        }
+
+        /// <summary>
+        /// 生成建议的文件名：优先用页面标题，其次用地址末段。
+        /// </summary>
+        public string SuggestedFileName(string url, string? title)
+        {
+            var name = CleanFileName(title);
+
+            if (string.IsNullOrWhiteSpace(name))
+            {
+                try
+                {
+                    name = CleanFileName(Path.GetFileNameWithoutExtension(new Uri(url).AbsolutePath));
+                }
+                catch
+                {
+                    // 忽略，使用兜底名
+                }
+            }
+
+            if (string.IsNullOrWhiteSpace(name)) name = "video";
+            if (name.Length > 60) name = name[..60];
+
+            return name + ExtensionFor(url);
+        }
+
+        private static string? CleanFileName(string? text)
+        {
+            if (string.IsNullOrWhiteSpace(text)) return null;
+            var cleaned = Regex.Replace(text, @"[\\/:*?""<>|\r\n\t]", " ").Trim();
+            cleaned = Regex.Replace(cleaned, @"\s+", " ");
+            return string.IsNullOrWhiteSpace(cleaned) ? null : cleaned;
+        }
+
+        /// <summary>
+        /// 下载视频。m3u8 会自动挑选最高清晰度并顺序合并分片。
+        /// </summary>
+        public async Task<DownloadResult> DownloadAsync(string url, string filePath, IProgress<DownloadProgress>? progress, CancellationToken ct)
+        {
+            using var client = CreateClient();
+
+            if (IsHlsUrl(url))
+            {
+                progress?.Report(new DownloadProgress("解析播放列表…", null));
+                var playlist = await ResolvePlaylistAsync(client, url, ct);
+                return await WriteHlsAsync(client, playlist, filePath, progress, ct);
+            }
+
+            return await DownloadSingleAsync(client, url, filePath, progress, ct);
+        }
+
+        /// <summary>
+        /// 站点只用 MSE 播放、抓不到 m3u8 地址时，直接拿页面里嗅探到的播放列表文本下载。
+        /// </summary>
+        public async Task<DownloadResult> DownloadFromPlaylistTextAsync(string playlistText, string baseUrl, string filePath, IProgress<DownloadProgress>? progress, CancellationToken ct)
+        {
+            using var client = CreateClient();
+            progress?.Report(new DownloadProgress("解析播放列表…", null));
+            var playlist = await ParsePlaylistAsync(playlistText, baseUrl, client, ct, 0);
+            return await WriteHlsAsync(client, playlist, filePath, progress, ct);
+        }
+
+        /// <summary>
+        /// 下载 DASH 分离的视频轨和音频轨，再用 ffmpeg 合并成单个 mp4。
+        /// 抖音等站点把视频和音频分成两个独立的 mp4 轨道返回，必须合并才能有声有画。
+        /// </summary>
+        public async Task<DownloadResult> DownloadDashPairAsync(string videoUrl, string audioUrl, string filePath, IProgress<DownloadProgress>? progress, CancellationToken ct)
+        {
+            var ffmpeg = FindFfmpeg();
+            if (ffmpeg == null)
+            {
+                throw new NotSupportedException("下载抖音 DASH 分离视频轨需要 ffmpeg 合并音视频，但未找到 ffmpeg.exe。请把 ffmpeg.exe 放到程序目录下。");
+            }
+
+            using var client = CreateClient();
+
+            // 临时文件
+            var tmpDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString("N"));
+            Directory.CreateDirectory(tmpDir);
+            var videoTmp = Path.Combine(tmpDir, "video.mp4");
+            var audioTmp = Path.Combine(tmpDir, "audio.mp4");
+
+            try
+            {
+                // 下载视频轨（占总进度 0~50%）
+                progress?.Report(new DownloadProgress("下载视频轨…", 0));
+                await DownloadSingleToFileAsync(client, videoUrl, videoTmp, ct,
+                    p => progress?.Report(new DownloadProgress($"下载视频轨 {FormatSize(p)}", null)));
+                var videoSize = new FileInfo(videoTmp).Length;
+
+                // 下载音频轨（占总进度 50~100%）
+                progress?.Report(new DownloadProgress("下载音频轨…", 0.5));
+                await DownloadSingleToFileAsync(client, audioUrl, audioTmp, ct,
+                    p => progress?.Report(new DownloadProgress($"下载音频轨 {FormatSize(p)}", null)));
+                var audioSize = new FileInfo(audioTmp).Length;
+
+                // 合并
+                progress?.Report(new DownloadProgress("合并音视频…", 0.95));
+                Directory.CreateDirectory(Path.GetDirectoryName(Path.GetFullPath(filePath))!);
+                var ok = await MuxDashAsync(ffmpeg, videoTmp, audioTmp, filePath, ct);
+                if (!ok)
+                    throw new InvalidOperationException("ffmpeg 合并音视频失败");
+
+                var finalSize = new FileInfo(filePath).Length;
+                progress?.Report(new DownloadProgress($"完成 {FormatSize(finalSize)}", 1));
+                return new DownloadResult(filePath, finalSize, true);
+            }
+            finally
+            {
+                try { Directory.Delete(tmpDir, true); } catch { /* 临时目录删不掉不影响结果 */ }
+            }
+        }
+
+        /// <summary>
+        /// 下载单个文件到指定路径（不做 .part 重命名，内部用）。
+        /// </summary>
+        private async Task DownloadSingleToFileAsync(HttpClient client, string url, string filePath, CancellationToken ct, Action<long>? onBytes = null)
+        {
+            using var resp = await GetFollowRedirectAsync(client, url, ct);
+            EnsureVideoResponse(resp);
+
+            await using var input = await resp.Content.ReadAsStreamAsync(ct);
+            await using var output = new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.None, 1024 * 64, true);
+            var buffer = new byte[1024 * 64];
+            long total = 0;
+            int read;
+            while ((read = await input.ReadAsync(buffer, ct)) > 0)
+            {
+                await output.WriteAsync(buffer.AsMemory(0, read), ct);
+                total += read;
+                onBytes?.Invoke(total);
+            }
+        }
+
+        /// <summary>
+        /// 用 ffmpeg 把 DASH 视频轨和音频轨合并成 mp4。
+        /// 优先两条流直接 copy：不重编码、时间戳原样保留，音画对齐最准确；
+        /// 只有音频轨格式装不进 mp4 容器时才回退到 AAC 转码。
+        /// </summary>
+        private static async Task<bool> MuxDashAsync(string ffmpeg, string videoFile, string audioFile, string outputFile, CancellationToken ct)
+        {
+            // 只取视频轨的视频流 + 音频轨的音频流（没音频流也照常出片），-shortest 把两条轨截齐到同一时长
+            var copyArgs = $"-hide_banner -loglevel error -y -fflags +genpts -i \"{videoFile}\" -i \"{audioFile}\" -map 0:v:0 -map 1:a:0? -c copy -shortest -movflags +faststart \"{outputFile}\"";
+            if (await RunFfmpegAsync(ffmpeg, copyArgs, outputFile, ct)) return true;
+
+            TryDelete(outputFile);
+
+            var aacArgs = $"-hide_banner -loglevel error -y -fflags +genpts -i \"{videoFile}\" -i \"{audioFile}\" -map 0:v:0 -map 1:a:0? -c:v copy -c:a aac -strict experimental -shortest -movflags +faststart \"{outputFile}\"";
+            return await RunFfmpegAsync(ffmpeg, aacArgs, outputFile, ct);
+        }
+
+        private static async Task<bool> RunFfmpegAsync(string ffmpeg, string args, string outputFile, CancellationToken ct)
+        {
+            var psi = new ProcessStartInfo
+            {
+                FileName = ffmpeg,
+                Arguments = args,
+                UseShellExecute = false,
+                CreateNoWindow = true,
+                RedirectStandardError = true,
+                RedirectStandardOutput = true
+            };
+
+            using var proc = Process.Start(psi);
+            if (proc == null) return false;
+
+            using (ct.Register(() => { try { if (!proc.HasExited) proc.Kill(true); } catch { } }))
+            {
+                await proc.WaitForExitAsync(ct);
+            }
+
+            return proc.ExitCode == 0 && File.Exists(outputFile) && new FileInfo(outputFile).Length > 0;
+        }
+
+        /// <summary>
+        /// 抽帧结果：成功时 Frames 非空；失败时 Error 给界面显示原因，不让用户干等。
+        /// </summary>
+        public record FrameExtraction(List<byte[]> Frames, string? Error);
+
+        /// <summary>
+        /// 抽取预览截图：每 intervalSeconds 秒取一张、共取 frameCount 张（默认 5 秒 3 张），
+        /// 供下载列表肉眼对比哪个是当前视频。用 ffmpeg 直接读远端地址，带 Referer/Cookie 过防盗链。
+        /// 单次尝试限 25 秒，超时不再重试第二次，避免地址失效时列表长时间卡在“生成中”。
+        /// </summary>
+        public async Task<FrameExtraction> ExtractFramesAsync(string url, CancellationToken ct, int intervalSeconds = 5, int frameCount = 3)
+        {
+            var ffmpeg = FindFfmpeg();
+            if (ffmpeg == null)
+            {
+                return new FrameExtraction(new List<byte[]>(), "未找到 ffmpeg，无法生成截图");
+            }
+            if (!Uri.TryCreate(url, UriKind.Absolute, out var uri)
+                || (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps))
+            {
+                return new FrameExtraction(new List<byte[]>(), "该地址无法直接抽帧");
+            }
+
+            var tmpDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString("N"));
+            Directory.CreateDirectory(tmpDir);
+
+            try
+            {
+                string? lastError = null;
+
+                // 先试从第 2 秒开始抽（片头常有黑帧），只有上一次正常退出且没拿到帧才退回 0 秒再试
+                foreach (var startAt in new[] { 2, 0 })
+                {
+                    ct.ThrowIfCancellationRequested();
+
+                    var args = new List<string>
+                    {
+                        "-hide_banner", "-loglevel", "error", "-nostdin", "-y",
+                        // 远端卡住时快速失败：单次 I/O 12 秒，探测上限 2MB/2秒，不靠外部杀进程兑底
+                        "-rw_timeout", "12000000",
+                        "-probesize", "2000000", "-analyzeduration", "2000000",
+                        "-reconnect", "1", "-reconnect_streamed", "1", "-reconnect_delay_max", "2"
+                    };
+                    var headers = BuildFfmpegHeaders();
+                    if (headers.Length > 0)
+                    {
+                        args.Add("-headers");
+                        args.Add(headers);
+                    }
+                    if (IsHlsUrl(url))
+                    {
+                        args.Add("-protocol_whitelist");
+                        args.Add("file,http,https,tcp,tls,crypto");
+                    }
+                    args.AddRange(new[]
+                    {
+                        "-ss", startAt.ToString(), "-i", url,
+                        "-t", (intervalSeconds * frameCount).ToString(),
+                        "-vf", $"fps=1/{intervalSeconds},scale=160:-2",
+                        "-frames:v", frameCount.ToString(), "-an",
+                        Path.Combine(tmpDir, "f_%d.jpg")
+                    });
+
+                    var run = await RunFfmpegArgsAsync(ffmpeg, args, ct);
+
+                    var files = Directory.GetFiles(tmpDir, "f_*.jpg").OrderBy(f => f, StringComparer.Ordinal).ToList();
+                    if (files.Count > 0)
+                    {
+                        return new FrameExtraction(files.Select(File.ReadAllBytes).ToList(), null);
+                    }
+
+                    lastError = run.Error ?? "没抽到帧";
+                    if (run.TimedOut)
+                    {
+                        break; // 地址多半已失效或被防盗链卡住，再试一次只会多等半分钟
+                    }
+                }
+
+                return new FrameExtraction(new List<byte[]>(), lastError ?? "没抽到帧");
+            }
+            finally
+            {
+                try { Directory.Delete(tmpDir, true); } catch { /* 临时目录删不掉不影响结果 */ }
+            }
+        }
+
+        /// <summary>
+        /// ffmpeg 走网络也要过防盗链：把下载器身上的 UA / Referer / Cookie 拼成 -headers 参数。
+        /// </summary>
+        private string BuildFfmpegHeaders()
+        {
+            var sb = new StringBuilder();
+            sb.Append($"User-Agent: {UserAgent}\r\n");
+            if (_referer != null) sb.Append($"Referer: {_referer}\r\n");
+            if (_cookie != null) sb.Append($"Cookie: {_cookie}\r\n");
+            return sb.ToString();
+        }
+
+        /// <summary>ffmpeg 单次运行结果：TimedOut 表示被外部杀掉，Error 给界面显示原因。</summary>
+        private record FfmpegRun(bool TimedOut, string? Error);
+
+        private static async Task<FfmpegRun> RunFfmpegArgsAsync(string ffmpeg, List<string> args, CancellationToken ct)
+        {
+            var psi = new ProcessStartInfo
+            {
+                FileName = ffmpeg,
+                UseShellExecute = false,
+                CreateNoWindow = true,
+                RedirectStandardError = true,
+                RedirectStandardOutput = true
+            };
+            foreach (var a in args) psi.ArgumentList.Add(a);
+
+            using var proc = Process.Start(psi);
+            if (proc == null) return new FfmpegRun(false, "ffmpeg 启动失败");
+
+            // 就算 -rw_timeout 失效（DNS 卡住、TLS 握手挂起等），25 秒也必须杀掉
+            using var timeout = CancellationTokenSource.CreateLinkedTokenSource(ct);
+            timeout.CancelAfter(TimeSpan.FromSeconds(25));
+
+            var errRead = proc.StandardError.ReadToEndAsync(); // 不读干 stderr 会把进程堵死
+            bool timedOut = false;
+            using (timeout.Token.Register(() => { try { if (!proc.HasExited) proc.Kill(true); } catch { } }))
+            {
+                try
+                {
+                    await proc.WaitForExitAsync(timeout.Token);
+                }
+                catch (OperationCanceledException) when (ct.IsCancellationRequested)
+                {
+                    throw; // 用户取消要往上抛，超时杀掉进程则返回原因
+                }
+                catch (OperationCanceledException)
+                {
+                    timedOut = true;
+                }
+            }
+
+            string stderr = string.Empty;
+            try { stderr = await errRead; } catch { /* 进程被杀时读流可能报错，不影响判断 */ }
+
+            if (timedOut)
+            {
+                return new FfmpegRun(true, "抽帧超时（25秒）：地址可能已失效或被防盗链卡住");
+            }
+            if (proc.ExitCode != 0)
+            {
+                return new FfmpegRun(false, SummarizeFfmpegError(stderr));
+            }
+            return new FfmpegRun(false, null);
+        }
+
+        /// <summary>取 ffmpeg 报错里最有信息量的一行，太长截断，直接丢给界面显示。</summary>
+        private static string SummarizeFfmpegError(string stderr)
+        {
+            var line = (stderr ?? string.Empty)
+                .Split('\n')
+                .Select(l => l.Trim('\r', ' '))
+                .FirstOrDefault(l => l.Length > 0 && !l.StartsWith("[h264", StringComparison.OrdinalIgnoreCase)
+                    && !l.StartsWith("[aac", StringComparison.OrdinalIgnoreCase));
+            if (string.IsNullOrEmpty(line)) return "ffmpeg 抽帧失败";
+            return line.Length > 90 ? line[..90] + "…" : line;
+        }
+
+        private HttpClient CreateClient()
+        {
+            var client = new HttpClient(new HttpClientHandler { AllowAutoRedirect = false })
+            {
+                Timeout = TimeSpan.FromMinutes(15)
+            };
+            client.DefaultRequestHeaders.UserAgent.ParseAdd(UserAgent);
+            client.DefaultRequestHeaders.Accept.ParseAdd("*/*");
+            client.DefaultRequestHeaders.AcceptLanguage.ParseAdd("zh-CN,zh;q=0.9,en;q=0.8");
+            if (_referer != null) client.DefaultRequestHeaders.Referrer = new Uri(_referer);
+            if (_cookie != null) client.DefaultRequestHeaders.TryAddWithoutValidation("Cookie", _cookie);
+            return client;
+        }
+
+        private async Task<DownloadResult> DownloadSingleAsync(HttpClient client, string url, string filePath, IProgress<DownloadProgress>? progress, CancellationToken ct)
+        {
+            using var resp = await GetFollowRedirectAsync(client, url, ct);
+            EnsureVideoResponse(resp);
+
+            var total = resp.Content.Headers.ContentLength ?? -1L;
+            var part = filePath + ".part";
+            Directory.CreateDirectory(Path.GetDirectoryName(Path.GetFullPath(filePath))!);
+
+            long done = 0;
+            long lastReport = 0;
+
+            await using var input = await resp.Content.ReadAsStreamAsync(ct);
+
+            try
+            {
+                var buffer = new byte[1024 * 64];
+
+                // 先读一小块验货：防盗链站点经常不报 403，而是给一段 200 的 HTML 错误页
+                int read = await input.ReadAsync(buffer.AsMemory(0, 4096), ct);
+                if (read > 0) EnsureRealVideoContent(buffer, read, resp, url);
+
+                await using var output = new FileStream(part, FileMode.Create, FileAccess.Write, FileShare.None, 1024 * 64, true);
+                while (read > 0)
+                {
+                    await output.WriteAsync(buffer.AsMemory(0, read), ct);
+                    done += read;
+
+                    if (done - lastReport >= 256 * 1024)
+                    {
+                        lastReport = done;
+                        progress?.Report(total > 0
+                            ? new DownloadProgress($"下载中 {FormatSize(done)} / {FormatSize(total)}", done / (double)total)
+                            : new DownloadProgress($"下载中 {FormatSize(done)}（总大小未知，可点取消结束）", null));
+                    }
+
+                    read = await input.ReadAsync(buffer, ct);
+                }
+            }
+            catch
+            {
+                TryDelete(part);
+                throw;
+            }
+
+            MoveIntoPlace(part, filePath);
+            progress?.Report(new DownloadProgress($"完成 {FormatSize(done)}", 1));
+            return new DownloadResult(filePath, done, false);
+        }
+
+        /// <summary>
+        /// 把常见 HTTP 错误码翻译成能行动的原因，只说“403”用户不知道下一步该做什么。
+        /// </summary>
+        private static void EnsureVideoResponse(HttpResponseMessage resp)
+        {
+            if (resp.IsSuccessStatusCode) return;
+
+            string hint = (int)resp.StatusCode switch
+            {
+                403 or 401 => "，防盗链或需要登录：先在页面里把视频播起来再点下载，或换一条线路",
+                404 => "，地址已失效（这类直链通常只有特别短的有效期）",
+                416 => "，服务器不接受当前请求范围，重试即可",
+                _ => string.Empty
+            };
+
+            throw new HttpRequestException($"服务器返回 {(int)resp.StatusCode} {resp.StatusCode}{hint}");
+        }
+
+        /// <summary>
+        /// 真正的视频容器不会以 "&lt;" 或 "{" 开头；m3u8 / mpd 本身是文本，不参与检查。
+        /// </summary>
+        private static void EnsureRealVideoContent(byte[] head, int length, HttpResponseMessage resp, string url)
+        {
+            if (IsHlsUrl(url) || RawExtension(url) == ".mpd") return;
+
+            var type = resp.Content.Headers.ContentType?.MediaType ?? string.Empty;
+            if (type.StartsWith("text/html", StringComparison.OrdinalIgnoreCase)
+                || type.StartsWith("text/plain", StringComparison.OrdinalIgnoreCase)
+                || type.Contains("json", StringComparison.OrdinalIgnoreCase))
+            {
+                throw new NotSupportedException($"站点返回的是 {type} 而不是视频，多半是防盗链或需要先登录/先播放");
+            }
+
+            int i = 0;
+            while (i < length && (head[i] is 0xEF or 0xBB or 0xBF or 0x20 or 0x0D or 0x0A or 0x09)) i++;
+
+            if (i < length && (head[i] == (byte)'<' || head[i] == (byte)'{'))
+            {
+                throw new NotSupportedException("站点返回的是网页内容而不是视频（防盗链或地址已过期），换一条线路重试");
+            }
+        }
+
+        private static void TryDelete(string path)
+        {
+            try { if (File.Exists(path)) File.Delete(path); } catch { /* 删不掉不影响报错 */ }
+        }
+
+        private async Task<DownloadResult> WriteHlsAsync(HttpClient client, HlsPlaylist playlist, string filePath, IProgress<DownloadProgress>? progress, CancellationToken ct)
+        {
+            if (playlist.Segments.Count == 0)
+                throw new InvalidOperationException("播放列表里没有解析到视频分片，可能还在加载中，请稍后重试");
+
+            if (playlist.KeyLine != null && playlist.KeyLine.Contains("METHOD=", StringComparison.OrdinalIgnoreCase)
+                && !playlist.KeyLine.Contains("METHOD=NONE", StringComparison.OrdinalIgnoreCase))
+            {
+                throw new NotSupportedException($"该视频是加密 HLS（{playlist.KeyLine}），需要解密 Key，暂不支持自动下载");
+            }
+
+            // 分片直接拼接出来的是 .ts；装了 ffmpeg 时顺手无损转封装成 mp4，播放更通用
+            var wantsMp4 = string.Equals(Path.GetExtension(filePath), ".mp4", StringComparison.OrdinalIgnoreCase);
+            var ffmpeg = wantsMp4 ? FindFfmpeg() : null;
+
+            if (wantsMp4 && ffmpeg == null)
+            {
+                // 没有 ffmpeg 就不能把 ts 流写成 .mp4 后缀，否则很多播放器认不出来
+                filePath = Path.ChangeExtension(filePath, ".ts");
+                progress?.Report(new DownloadProgress("未找到 ffmpeg，改存为 .ts（播放器可以直接播）", null));
+            }
+
+            var mergedPath = ffmpeg != null
+                ? Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString("N") + ".ts")
+                : filePath;
+
+            Directory.CreateDirectory(Path.GetDirectoryName(Path.GetFullPath(mergedPath))!);
+
+            long total = 0;
+            int index = 0;
+            var part = mergedPath + ".part";
+
+            await using (var output = new FileStream(part, FileMode.Create, FileAccess.Write, FileShare.None, 1024 * 1024, true))
+            {
+                foreach (var segment in playlist.Segments)
+                {
+                    ct.ThrowIfCancellationRequested();
+
+                    using var resp = await GetFollowRedirectAsync(client, segment, ct);
+                    resp.EnsureSuccessStatusCode();
+
+                    await using var input = await resp.Content.ReadAsStreamAsync(ct);
+                    await input.CopyToAsync(output, ct);
+
+                    total += resp.Content.Headers.ContentLength ?? 0;
+                    index++;
+
+                    if (index % 5 == 0 || index == playlist.Segments.Count)
+                        progress?.Report(new DownloadProgress($"下载分片 {index}/{playlist.Segments.Count}，已下载 {FormatSize(total)}", index / (double)playlist.Segments.Count));
+                }
+            }
+
+            if (ffmpeg == null)
+            {
+                MoveIntoPlace(part, mergedPath);
+                progress?.Report(new DownloadProgress($"完成 {FormatSize(total)}", 1));
+                return new DownloadResult(mergedPath, new FileInfo(mergedPath).Length, false);
+            }
+
+            progress?.Report(new DownloadProgress("用 ffmpeg 转封装为 mp4…", null));
+            MoveIntoPlace(part, mergedPath);
+
+            try
+            {
+                var ok = await ConvertToMp4Async(ffmpeg, mergedPath, filePath, ct);
+                if (ok)
+                {
+                    try { File.Delete(mergedPath); } catch { /* 临时文件删不掉不影响结果 */ }
+                    var size = new FileInfo(filePath).Length;
+                    progress?.Report(new DownloadProgress($"完成 {FormatSize(size)}", 1));
+                    return new DownloadResult(filePath, size, true);
+                }
+            }
+            catch
+            {
+                // 转封装失败时保留 ts 文件，避免用户什么都拿不到
+            }
+
+            var tsSize = new FileInfo(mergedPath).Length;
+            progress?.Report(new DownloadProgress($"完成（未能转成 mp4，已保存 ts）{FormatSize(tsSize)}", 1));
+            return new DownloadResult(mergedPath, tsSize, false);
+        }
+
+        private record HlsPlaylist(List<string> Segments, string? KeyLine);
+
+        /// <summary>
+        /// 解析 m3u8：主播放列表按带宽挑最高清晰度，最后返回绝对地址的分片列表。
+        /// </summary>
+        private async Task<HlsPlaylist> ResolvePlaylistAsync(HttpClient client, string url, CancellationToken ct, int depth = 0)
+        {
+            if (depth > 3) throw new InvalidOperationException("播放列表嵌套层级过深");
+
+            using var resp = await GetFollowRedirectAsync(client, url, ct);
+            resp.EnsureSuccessStatusCode();
+
+            var text = await ReadTextAsync(resp, ct);
+            return await ParsePlaylistAsync(text, url, client, ct, depth);
+        }
+
+        private async Task<HlsPlaylist> ParsePlaylistAsync(string text, string url, HttpClient client, CancellationToken ct, int depth)
+        {
+            if (!text.Contains("#EXTM3U"))
+                throw new InvalidOperationException("返回的内容不是 m3u8 播放列表，请改用列表里的 mp4 直链下载");
+
+            var lines = text.Split('\n').Select(l => l.Trim('\r', ' ', '\t')).ToList();
+
+            // 主播放列表：#EXT-X-STREAM-INF 后面紧跟子列表地址
+            var variants = new List<(string Uri, int Bandwidth)>();
+            for (int i = 0; i < lines.Count; i++)
+            {
+                if (!lines[i].StartsWith("#EXT-X-STREAM-INF", StringComparison.OrdinalIgnoreCase)) continue;
+
+                var bandwidth = 0;
+                var m = Regex.Match(lines[i], @"BANDWIDTH=(\d+)", RegexOptions.IgnoreCase);
+                if (m.Success) bandwidth = int.Parse(m.Groups[1].Value);
+
+                for (int j = i + 1; j < lines.Count; j++)
+                {
+                    if (lines[j].Length == 0 || lines[j].StartsWith("#")) continue;
+                    variants.Add((lines[j], bandwidth));
+                    break;
+                }
+            }
+
+            if (variants.Count > 0)
+            {
+                var best = variants[^1];
+                foreach (var v in variants)
+                    if (v.Bandwidth > best.Bandwidth) best = v;
+
+                ct.ThrowIfCancellationRequested();
+                return await ResolvePlaylistAsync(client, Resolve(url, best.Uri), ct, depth + 1);
+            }
+
+            var segments = lines
+                .Where(l => l.Length > 0 && !l.StartsWith("#"))
+                .Select(l => Resolve(url, l))
+                .ToList();
+
+            var keyLine = lines.FirstOrDefault(l => l.StartsWith("#EXT-X-KEY", StringComparison.OrdinalIgnoreCase));
+            return new HlsPlaylist(segments, keyLine);
+        }
+
+        private static string Resolve(string baseUrl, string relative)
+        {
+            if (Path.IsPathRooted(relative) || relative.StartsWith("//", StringComparison.Ordinal))
+            {
+                try
+                {
+                    var u = new Uri(baseUrl);
+                    return $"{u.Scheme}:{relative}";
+                }
+                catch
+                {
+                    return relative;
+                }
+            }
+
+            if (Uri.TryCreate(relative, UriKind.Absolute, out _)) return relative;
+
+            try
+            {
+                return new Uri(new Uri(baseUrl), relative).ToString();
+            }
+            catch
+            {
+                return relative;
+            }
+        }
+
+        private static async Task<HttpResponseMessage> GetFollowRedirectAsync(HttpClient client, string url, CancellationToken ct)
+        {
+            var current = url;
+            HttpResponseMessage? previous = null;
+
+            for (int i = 0; i < 6; i++)
+            {
+                var resp = await client.GetAsync(current, HttpCompletionOption.ResponseHeadersRead, ct);
+
+                if (resp.IsSuccessStatusCode) return resp;
+
+                var status = (int)resp.StatusCode;
+                var location = resp.Headers.Location;
+                if (status < 300 || status > 399 || location == null) return resp;
+
+                previous?.Dispose();
+                previous = resp;
+                current = location.IsAbsoluteUri ? location.ToString() : new Uri(new Uri(current), location).ToString();
+            }
+
+            return previous ?? await client.GetAsync(current, HttpCompletionOption.ResponseHeadersRead, ct);
+        }
+
+        /// <summary>
+        /// m3u8 常用 GBK 编码，直接按 UTF8 读会让中文路径的分片地址出错。
+        /// </summary>
+        private static async Task<string> ReadTextAsync(HttpResponseMessage resp, CancellationToken ct)
+        {
+            using var ms = new MemoryStream();
+            await resp.Content.CopyToAsync(ms, ct);
+
+            var encoding = Encoding.UTF8;
+            var match = CharsetRx.Match(resp.Content.Headers.ContentType?.ToString() ?? "");
+            if (match.Success)
+            {
+                try { encoding = Encoding.GetEncoding(match.Groups[1].Value); }
+                catch { /* 未知编码退回 UTF8 */ }
+            }
+
+            var text = encoding.GetString(ms.ToArray());
+
+            // 去掉可能存在的 BOM
+            if (text.Length > 0 && text[0] == '\uFEFF') text = text[1..];
+            return text;
+        }
+
+        private static async Task<bool> ConvertToMp4Async(string ffmpeg, string tsFile, string mp4File, CancellationToken ct)
+        {
+            var args = $"-hide_banner -loglevel error -y -fflags +genpts -i \"{tsFile}\" -c copy -bsf:a aac_adtstoasc -movflags +faststart \"{mp4File}\"";
+            var psi = new ProcessStartInfo
+            {
+                FileName = ffmpeg,
+                Arguments = args,
+                UseShellExecute = false,
+                CreateNoWindow = true,
+                RedirectStandardError = true,
+                RedirectStandardOutput = true
+            };
+
+            using var proc = Process.Start(psi);
+            if (proc == null) return false;
+
+            using (ct.Register(() => { try { if (!proc.HasExited) proc.Kill(true); } catch { } }))
+            {
+                await proc.WaitForExitAsync(ct);
+            }
+
+            return proc.ExitCode == 0 && File.Exists(mp4File) && new FileInfo(mp4File).Length > 0;
+        }
+
+        /// <summary>
+        /// 查找 ffmpeg：顺序为 1) ffmpeg.json 配置文件指定的路径；2) 程序目录 ffmpeg.exe；3) PATH。
+        /// 配置文件格式：{"ffmpegPath": "D:\\NET8\\Exe\\ffmpeg\\bin\\ffmpeg.exe"}
+        /// </summary>
+        public static string? FindFfmpeg()
+        {
+            // 1. 配置文件指定的路径（优先级最高）
+            var configPath = Path.Combine(AppContext.BaseDirectory, "ffmpeg.json");
+            if (File.Exists(configPath))
+            {
+                try
+                {
+                    var json = File.ReadAllText(configPath);
+                    using var doc = JsonDocument.Parse(json);
+                    if (doc.RootElement.TryGetProperty("ffmpegPath", out var prop) &&
+                        prop.ValueKind == JsonValueKind.String)
+                    {
+                        var configured = prop.GetString();
+                        if (!string.IsNullOrWhiteSpace(configured) && File.Exists(configured))
+                            return configured;
+                    }
+                }
+                catch { /* 配置文件损坏就跳过，继续找别的 */ }
+            }
+
+            // 2. 程序目录
+            var local = Path.Combine(AppContext.BaseDirectory, "ffmpeg.exe");
+            if (File.Exists(local)) return local;
+
+            // 3. PATH
+            foreach (var dir in (Environment.GetEnvironmentVariable("PATH") ?? "").Split(Path.PathSeparator))
+            {
+                if (string.IsNullOrWhiteSpace(dir)) continue;
+                try
+                {
+                    var candidate = Path.Combine(dir.Trim().Trim('"'), "ffmpeg.exe");
+                    if (File.Exists(candidate)) return candidate;
+                }
+                catch
+                {
+                    // PATH 里存在非法字符时跳过该项
+                }
+            }
+
+            return null;
+        }
+
+        public static bool HasFfmpeg() => FindFfmpeg() != null;
+
+        private static void MoveIntoPlace(string partFile, string targetFile)
+        {
+            if (File.Exists(targetFile)) File.Delete(targetFile);
+            File.Move(partFile, targetFile);
+        }
+
+        public static string FormatSize(long bytes)
+        {
+            if (bytes <= 0) return "0 B";
+            if (bytes >= 1L << 30) return $"{bytes / (double)(1L << 30):0.00} GB";
+            if (bytes >= 1L << 20) return $"{bytes / (double)(1L << 20):0.0} MB";
+            if (bytes >= 1L << 10) return $"{bytes / (double)(1L << 10):0.0} KB";
+            return $"{bytes} B";
+        }
+    }
+}
@@ -0,0 +1,101 @@
+namespace WinFormsApp3
+{
+    partial class VideoListForm
+    {
+        private System.ComponentModel.IContainer components = null;
+
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                components?.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        private void InitializeComponent()
+        {
+            components = new System.ComponentModel.Container();
+            pnlVideos = new Panel();
+            panelBottom = new Panel();
+            lblHint = new Label();
+            flowButtons = new FlowLayoutPanel();
+            btnDownload = new Button();
+            btnCancel = new Button();
+            SuspendLayout();
+            // 
+            // pnlVideos
+            // 
+            pnlVideos.AutoScroll = true;
+            pnlVideos.Dock = DockStyle.Fill;
+            pnlVideos.Name = "pnlVideos";
+            // 
+            // panelBottom
+            // 
+            panelBottom.Controls.Add(flowButtons);
+            panelBottom.Controls.Add(lblHint);
+            panelBottom.Dock = DockStyle.Bottom;
+            panelBottom.Height = 48;
+            panelBottom.Name = "panelBottom";
+            // 
+            // lblHint
+            // 
+            lblHint.AutoSize = true;
+            lblHint.Location = new Point(12, 15);
+            lblHint.Name = "lblHint";
+            lblHint.Text = "正在生成预览截图…";
+            // 
+            // flowButtons
+            // 用从右往左的流式布局放按钮，避免 Anchor+固定坐标在初始化时被锚点公式推出窗外
+            // 
+            flowButtons.Controls.Add(btnCancel);
+            flowButtons.Controls.Add(btnDownload);
+            flowButtons.Dock = DockStyle.Right;
+            flowButtons.FlowDirection = FlowDirection.RightToLeft;
+            flowButtons.Location = new Point(600, 0);
+            flowButtons.Name = "flowButtons";
+            flowButtons.Size = new Size(300, 48);
+            flowButtons.WrapContents = false;
+            // 
+            // btnDownload
+            // 
+            btnDownload.Margin = new Padding(0, 9, 8, 9);
+            btnDownload.Name = "btnDownload";
+            btnDownload.Size = new Size(150, 30);
+            btnDownload.Text = "下载选中 (0)";
+            btnDownload.UseVisualStyleBackColor = true;
+            btnDownload.Click += btnDownload_Click;
+            // 
+            // btnCancel
+            // 
+            btnCancel.DialogResult = DialogResult.Cancel;
+            btnCancel.Margin = new Padding(0, 9, 4, 9);
+            btnCancel.Name = "btnCancel";
+            btnCancel.Size = new Size(88, 30);
+            btnCancel.Text = "取消";
+            btnCancel.UseVisualStyleBackColor = true;
+            // 
+            // VideoListForm
+            // 
+            CancelButton = btnCancel;
+            AcceptButton = btnDownload;
+            ClientSize = new Size(900, 640);
+            Controls.Add(pnlVideos);
+            Controls.Add(panelBottom);
+            MinimumSize = new Size(640, 400);
+            Name = "VideoListForm";
+            StartPosition = FormStartPosition.CenterParent;
+            Text = "本页视频列表（截图预览，勾选后批量下载）";
+            panelBottom.ResumeLayout(false);
+            panelBottom.PerformLayout();
+            ResumeLayout(false);
+        }
+
+        private Panel pnlVideos;
+        private Panel panelBottom;
+        private Label lblHint;
+        private FlowLayoutPanel flowButtons;
+        private Button btnDownload;
+        private Button btnCancel;
+    }
+}
@@ -0,0 +1,341 @@
+using System.Drawing.Drawing2D;
+
+namespace WinFormsApp3
+{
+    /// <summary>
+    /// 本页视频下载列表：每个候选视频用 ffmpeg 抽 3 张间隔 5 秒的截图拼成预览条，
+    /// 肉眼对比哪个是当前视频后勾选，选文件夹批量下载。
+    /// 当前正在播放的那条默认勾上。
+    /// </summary>
+    public partial class VideoListForm : Form
+    {
+        private const int RowHeight = 124;
+        private const int PreviewWidth = 496;
+        private const int PreviewHeight = 100;
+
+        private readonly Func<VideoCandidate, CancellationToken, Task<(Image? Image, string? Error)>> _previewFactory;
+        private readonly List<VideoRow> _rows = new();
+        private readonly CancellationTokenSource _loadCts = new();
+        private int _generatedCount;
+        private int _failedCount;
+
+        /// <summary>点“下载选中”后带回的勾选候选（按列表顺序）。</summary>
+        public List<VideoCandidate> SelectedCandidates { get; } = new();
+
+        public VideoListForm(IReadOnlyList<VideoCandidate> candidates, IReadOnlyCollection<string> currentUrls,
+            Func<VideoCandidate, CancellationToken, Task<(Image? Image, string? Error)>> previewFactory)
+        {
+            InitializeComponent();
+
+            _previewFactory = previewFactory;
+            BuildRows(candidates, currentUrls);
+        }
+
+        private void BuildRows(IReadOnlyList<VideoCandidate> candidates, IReadOnlyCollection<string> currentUrls)
+        {
+            int y = 8;
+            foreach (VideoCandidate candidate in candidates)
+            {
+                bool isCurrent = currentUrls.Contains(candidate.Url);
+                VideoRow row = new VideoRow(candidate, Describe(candidate, isCurrent), isCurrent)
+                {
+                    Location = new Point(8, y),
+                    Width = Math.Max(620, pnlVideos.ClientSize.Width - 24),
+                };
+                row.CheckChanged += (_, _) => UpdateSelectionCount();
+                _rows.Add(row);
+                pnlVideos.Controls.Add(row);
+                y += RowHeight + 6;
+            }
+
+            pnlVideos.Resize += (_, _) =>
+            {
+                foreach (VideoRow row in _rows)
+                {
+                    row.Width = Math.Max(620, pnlVideos.ClientSize.Width - 24);
+                }
+            };
+
+            UpdateSelectionCount();
+        }
+
+        /// <summary>
+        /// 截图预览在后台生成（三条并发），生成一条刷新一条；
+        /// 失败时把原因直接写在预览条上，不让界面一直停在“生成中…”。
+        /// </summary>
+        protected override async void OnShown(EventArgs e)
+        {
+            base.OnShown(e);
+
+            if (_rows.Count == 0)
+            {
+                lblHint.Text = "本页没有可下载的视频";
+                return;
+            }
+
+            SemaphoreSlim semaphore = new SemaphoreSlim(3);
+            Task[] tasks = _rows.Select(async row =>
+            {
+                await semaphore.WaitAsync(_loadCts.Token);
+                try
+                {
+                    Image? preview = null;
+                    string? error = null;
+                    try
+                    {
+                        (preview, error) = await _previewFactory(row.Candidate, _loadCts.Token);
+                    }
+                    catch (OperationCanceledException)
+                    {
+                        PreviewLog.Write("预览任务被取消（列表已关闭）");
+                        return;
+                    }
+                    catch (Exception ex)
+                    {
+                        // 抽帧失败按“无预览”处理，勾选与下载不受影响
+                        error = ex.Message;
+                    }
+
+                    PreviewLog.Write($"预览回传 UI img={(preview != null ? "ok" : "null")} error={(error ?? "-")}");
+
+                    if (_loadCts.IsCancellationRequested || !IsHandleCreated || IsDisposed)
+                    {
+                        preview?.Dispose();
+                        return;
+                    }
+
+                    BeginInvoke(() =>
+                    {
+                        row.SetResult(preview, error);
+                        if (preview == null) _failedCount++;
+                        _generatedCount++;
+                        // 最后一行刷新时直接切到完成文案，不依赖 WhenAll 后续代码的时序
+                        lblHint.Text = _generatedCount < _rows.Count
+                            ? $"截图生成中… {_generatedCount}/{_rows.Count}" +
+                              (_failedCount > 0 ? $"（{_failedCount} 条失败，原因见预览条）" : string.Empty)
+                            : (_failedCount == 0
+                                ? "截图已生成，对比后勾选要下载的视频"
+                                : $"截图生成完毕（{_failedCount} 条失败，原因见预览条；不影响勾选下载）");
+                    });
+                }
+                finally
+                {
+                    semaphore.Release();
+                }
+            }).ToArray();
+
+            await Task.WhenAll(tasks);
+
+            if (!IsDisposed && !_loadCts.IsCancellationRequested)
+            {
+                lblHint.Text = _failedCount == 0
+                    ? "截图已生成，对比后勾选要下载的视频"
+                    : $"截图生成完毕（{_failedCount} 条失败，原因见预览条；不影响勾选下载）";
+            }
+        }
+
+        protected override void OnFormClosed(FormClosedEventArgs e)
+        {
+            _loadCts.Cancel();
+            _loadCts.Dispose();
+            base.OnFormClosed(e);
+        }
+
+        private void UpdateSelectionCount()
+        {
+            btnDownload.Text = $"下载选中 ({_rows.Count(r => r.IsChecked)})";
+        }
+
+        private void btnDownload_Click(object sender, EventArgs e)
+        {
+            SelectedCandidates.Clear();
+            SelectedCandidates.AddRange(_rows.Where(r => r.IsChecked).Select(r => r.Candidate));
+
+            if (SelectedCandidates.Count == 0)
+            {
+                MessageBox.Show(this, "先勾选要下载的视频（看截图对比哪个是当前视频）。",
+                    "下载列表", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                return;
+            }
+
+            DialogResult = DialogResult.OK;
+        }
+
+        private static string Describe(VideoCandidate candidate, bool isCurrent)
+        {
+            List<string> tags = new List<string>();
+            if (isCurrent) tags.Add("当前播放");
+            if (candidate.PlaylistText != null) tags.Add("内存播放列表");
+            else if (VideoDownloader.IsHlsUrl(candidate.Url)) tags.Add("m3u8");
+            if (!string.IsNullOrEmpty(candidate.AudioUrl)) tags.Add("音频轨已配对·自动合并");
+            if (tags.Count == 0) tags.Add("直链");
+
+            string hostLine;
+            try
+            {
+                Uri u = new Uri(candidate.Url);
+                string last = Path.GetFileName(u.AbsolutePath);
+                hostLine = last.Length > 0 ? $"{u.Host} … {last}" : u.Host;
+            }
+            catch
+            {
+                hostLine = candidate.Url.Length > 90 ? candidate.Url[..90] + "…" : candidate.Url;
+            }
+
+            return $"【{string.Join("】【", tags)}】\n{hostLine}";
+        }
+
+        /// <summary>
+        /// 把抽到的 JPEG 帧横向拼成一条预览图（约 3×160 宽），供列表行显示。
+        /// </summary>
+        public static Image? ComposeFrames(List<byte[]> frames)
+        {
+            if (frames == null || frames.Count == 0) return null;
+
+            List<Image> source = new List<Image>();
+            foreach (byte[] frame in frames)
+            {
+                try
+                {
+                    Image img = Image.FromStream(new MemoryStream(frame));
+                    source.Add(img);
+                }
+                catch
+                {
+                    // 坏帧直接跳过
+                }
+            }
+            if (source.Count == 0) return null;
+
+            const int cellW = 160;
+            const int gap = 8;
+            int cellH = PreviewHeight - 4;
+
+            var sizes = source.Select(img =>
+            {
+                int w = cellW;
+                int h = Math.Max(1, (int)Math.Round((double)cellW * img.Height / img.Width));
+                if (h > cellH)
+                {
+                    h = cellH;
+                    w = Math.Max(1, (int)Math.Round((double)cellH * img.Width / img.Height));
+                }
+                return (w, h);
+            }).ToList();
+
+            int canvasW = source.Count * cellW + (source.Count - 1) * gap;
+            int canvasH = sizes.Max(s => s.h);
+            Bitmap strip = new Bitmap(canvasW, canvasH);
+
+            using (Graphics g = Graphics.FromImage(strip))
+            {
+                g.Clear(Color.Black);
+                g.InterpolationMode = InterpolationMode.HighQualityBicubic;
+                for (int i = 0; i < source.Count; i++)
+                {
+                    int x = i * (cellW + gap) + (cellW - sizes[i].w) / 2;
+                    int y = (canvasH - sizes[i].h) / 2;
+                    g.DrawImage(source[i], new Rectangle(x, y, sizes[i].w, sizes[i].h));
+                }
+            }
+
+            foreach (Image img in source) img.Dispose();
+            return strip;
+        }
+
+        /// <summary>
+        /// 一行候选：勾选框 + 截图预览条 + 说明文字。
+        /// </summary>
+        private sealed class VideoRow : UserControl
+        {
+            private readonly CheckBox _check = new();
+            private readonly PictureBox _preview = new();
+            private readonly ToolTip _tip = new();
+
+            public VideoCandidate Candidate { get; }
+            public bool IsChecked => _check.Checked;
+            public event EventHandler? CheckChanged;
+
+            public VideoRow(VideoCandidate candidate, string description, bool isChecked)
+            {
+                Candidate = candidate;
+                Height = RowHeight;
+                Margin = new Padding(0);
+
+                TableLayoutPanel layout = new TableLayoutPanel
+                {
+                    Dock = DockStyle.Fill,
+                    ColumnCount = 3,
+                    RowCount = 1,
+                };
+                layout.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, 30F));
+                layout.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, PreviewWidth + 8F));
+                layout.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100F));
+
+                _check.Dock = DockStyle.None;
+                _check.Anchor = AnchorStyles.Top;
+                _check.Location = new Point(4, 6);
+                _check.Checked = isChecked;
+                _check.CheckedChanged += (_, _) => CheckChanged?.Invoke(this, EventArgs.Empty);
+
+                _preview.Size = new Size(PreviewWidth, PreviewHeight);
+                _preview.SizeMode = PictureBoxSizeMode.Zoom;
+                _preview.BackColor = Color.FromArgb(28, 28, 28);
+                _preview.Image = Placeholder();
+
+                Label text = new Label
+                {
+                    Dock = DockStyle.Fill,
+                    Padding = new Padding(8, 4, 4, 2),
+                    Text = description,
+                    TextAlign = ContentAlignment.TopLeft,
+                };
+
+                layout.Controls.Add(_check, 0, 0);
+                layout.Controls.Add(_preview, 1, 0);
+                layout.Controls.Add(text, 2, 0);
+                Controls.Add(layout);
+            }
+
+            public void SetResult(Image? image, string? error)
+            {
+                _preview.Image?.Dispose();
+                if (image != null)
+                {
+                    _preview.Image = image;
+                    _tip.SetToolTip(_preview, string.Empty);
+                }
+                else
+                {
+                    // 把失败原因直接画在预览条上，一眼能看出是超时还是防盗链
+                    string reason = string.IsNullOrWhiteSpace(error) ? "截图不可用" : error!;
+                    _preview.Image = Placeholder(reason);
+                    _tip.SetToolTip(_preview, reason);
+                }
+            }
+
+            /// <summary>截图还没生成好（或生成失败）时行内显示的占位条。</summary>
+            private static Image Placeholder(string? message = null)
+            {
+                Bitmap bmp = new Bitmap(PreviewWidth, PreviewHeight);
+                using Graphics g = Graphics.FromImage(bmp);
+                g.Clear(Color.FromArgb(28, 28, 28));
+                using (var cellBrush = new SolidBrush(Color.FromArgb(56, 56, 56)))
+                {
+                    for (int i = 0; i < 3; i++)
+                    {
+                        g.FillRectangle(cellBrush, i * 168, 0, 160, PreviewHeight);
+                    }
+                }
+                using Font font = new Font("Microsoft YaHei UI", 8F);
+                string text = message ?? "截图生成中…";
+                Color color = message == null ? Color.Gray : Color.FromArgb(230, 140, 90);
+                // 失败原因可能较长，在预览条区域内自动换行
+                var rect = new RectangleF(4, 4, PreviewWidth - 8, PreviewHeight - 8);
+                using var format = new StringFormat { Trimming = StringTrimming.EllipsisCharacter, FormatFlags = StringFormatFlags.LineLimit };
+                g.DrawString(text, font, new SolidBrush(color), rect, format);
+                return bmp;
+            }
+        }
+    }
+}
@@ -0,0 +1 @@
+https://www.douyin.com/jingxuan?modal_id=7704345703665422713
@@ -0,0 +1 @@
+{"v": "https://v26-web.douyinvod.com/cde0dd644a3f3fdd8b51ce0d8ac53eea/6aed51d1/video/tos/cn/tos-cn-v-694b40/oUqAC2l4TBfIhPFJ2AcgFisAA41dgvfDqX8DEW/media-video-hvc1/?a=6383&ch=0&cr=8&dr=0&er=1&lr=default&cd=0%7C0%7C0%7C3&cv=1&br=346&bt=346&cs=4&ds=6&mime_type=video_mp4&qs=14&rc=O2RpN2doPDxnNjk1Njs1Z0BpM3l0M3U5cm40ZTYzNDVpM0A2Y2MvNDAuXmAxXmMtNjAxYSNfcGliMmRzX2VhLS1kMi9zcw%3D%3D&btag=c0000e00038000&cquery=100w_100o&dy_q=1793840674&l=20261105090434E2510E54DA3AC7D64180", "a": "https://v26-web.douyinvod.com/e6943c243c43eed40ed2797458968f85/6aed51d1/video/tos/cn/tos-cn-v-694b40/okTEuLCmAKneHtxwXVYxfsIN8ARqAA56GCfeIA/media-audio-und-mp4a/?a=6383&ch=0&cr=8&dr=0&er=1&lr=default&cd=0%7C0%7C0%7C3&cv=1&br=50&bt=50&cs=0&mime_type=video_mp4&qs=1&rc=OTVpOTw6Njo2O2U6ZWQ2NUBpM3l0M3U5cm40ZTYzNDVpM0A1MS80LWBfYy4wLTQxMjQvYSNfcGliMmRzX2VhLS1kMi9zcw%3D%3D&btag=c0000e00038000&cquery=100o_100w&dy_q=1793840674&l=20261105090434E2510E54DA3AC7D64180"}
@@ -0,0 +1,3 @@
+{
+  "ffmpegPath": "D:\\NET8\\Exe\\ffmpeg\\bin\\ffmpeg.exe"
+}
@@ -0,0 +1,6 @@
+{
+  "sdk": {
+    "version": "8.0.100",
+    "rollForward": "latestMajor"
+  }
+}
@@ -1,30 +1,31 @@
 {
-    "name" : "安全小秘书",
-    "appid" : "__UNI__A3FEFA1",
-    "description" : "本地 SQLite 密码保险箱，图案密码登录",
-    "versionName" : "1.0.0",
-    "versionCode" : "100",
-    "transformPx" : false,
+    "name": "安全小秘书",
+    "appid": "__UNI__A3FEFA1",
+    "description": "本地 SQLite 密码保险箱，图案密码登录",
+    "versionName": "1.0.0",
+    "versionCode": "100",
+    "transformPx": false,
    /* 5+App特有相关 */
-    "app-plus" : {
-        "usingComponents" : true,
-        "nvueStyleCompiler" : "uni-app",
-        "compilerVersion" : 3,
-        "splashscreen" : {
-            "alwaysShowBeforeRender" : true,
-            "waiting" : true,
-            "autoclose" : true,
-            "delay" : 0
+    "app-plus": {
+        "usingComponents": true,
+        "nvueStyleCompiler": "uni-app",
+        "compilerVersion": 3,
+        "splashscreen": {
+            "alwaysShowBeforeRender": true,
+            "waiting": true,
+            "autoclose": true,
+            "delay": 0
        },
        /* 模块配置 */
-        "modules" : {
-            "sqlite" : {}
+        "modules": {
+            "sqlite": {},
+            "Camera": {}
        },
        /* 应用发布信息 */
-        "distribute" : {
+        "distribute": {
            /* android打包配置 */
-            "android" : {
-                "permissions" : [
+            "android": {
+                "permissions": [
                    "<uses-permission android:name=\"android.permission.CHANGE_NETWORK_STATE\"/>",
                    "<uses-permission android:name=\"android.permission.MOUNT_UNMOUNT_FILESYSTEMS\"/>",
                    "<uses-permission android:name=\"android.permission.VIBRATE\"/>",
@@ -41,13 +42,17 @@
                    "<uses-feature android:name=\"android.hardware.camera\"/>",
                    "<uses-permission android:name=\"android.permission.WRITE_SETTINGS\"/>"
                ],
-                "abiFilters" : [ "arm64-v8a", "x86" ]
+                "abiFilters": [
+                    "arm64-v8a",
+                    "x86"
+                ]
            },
            /* ios打包配置 */
-            "ios" : {
-                "dSYMs" : false
+            "ios": {
+                "dSYMs": false
            },
            /* SDK配置 */
+<<<<<<< HEAD
            "sdkConfigs" : {
                "ad" : {},
                "share" : {
@@ -59,31 +64,75 @@
            },
            "splashscreen" : {
                "useOriginalMsgbox" : true
+=======
+            "sdkConfigs": {
+                "share": {}
+            },
+            "splashscreen": {
+                "useOriginalMsgbox": true
+            },
+            "icons": {
+                "android": {
+                    "hdpi": "unpackage/res/icons/72x72.png",
+                    "xhdpi": "unpackage/res/icons/96x96.png",
+                    "xxhdpi": "unpackage/res/icons/144x144.png",
+                    "xxxhdpi": "unpackage/res/icons/192x192.png"
+                },
+                "ios": {
+                    "appstore": "unpackage/res/icons/1024x1024.png",
+                    "ipad": {
+                        "app": "unpackage/res/icons/76x76.png",
+                        "app@2x": "unpackage/res/icons/152x152.png",
+                        "notification": "unpackage/res/icons/20x20.png",
+                        "notification@2x": "unpackage/res/icons/40x40.png",
+                        "proapp@2x": "unpackage/res/icons/167x167.png",
+                        "settings": "unpackage/res/icons/29x29.png",
+                        "settings@2x": "unpackage/res/icons/58x58.png",
+                        "spotlight": "unpackage/res/icons/40x40.png",
+                        "spotlight@2x": "unpackage/res/icons/80x80.png"
+                    },
+                    "iphone": {
+                        "app@2x": "unpackage/res/icons/120x120.png",
+                        "app@3x": "unpackage/res/icons/180x180.png",
+                        "notification@2x": "unpackage/res/icons/40x40.png",
+                        "notification@3x": "unpackage/res/icons/60x60.png",
+                        "settings@2x": "unpackage/res/icons/58x58.png",
+                        "settings@3x": "unpackage/res/icons/87x87.png",
+                        "spotlight@2x": "unpackage/res/icons/80x80.png",
+                        "spotlight@3x": "unpackage/res/icons/120x120.png"
+                    }
+                }
+>>>>>>> 8260c417e21af16b318dd9155b55aa00378c20a5
            }
        }
    },
    /* 快应用特有相关 */
-    "quickapp" : {},
+    "quickapp": {},
    /* 小程序特有相关 */
-    "mp-weixin" : {
-        "appid" : "",
-        "setting" : {
-            "urlCheck" : false
+    "mp-weixin": {
+        "appid": "",
+        "setting": {
+            "urlCheck": false
        },
-        "usingComponents" : true
+        "usingComponents": true
    },
-    "mp-alipay" : {
-        "usingComponents" : true
+    "mp-alipay": {
+        "usingComponents": true
    },
-    "mp-baidu" : {
-        "usingComponents" : true
+    "mp-baidu": {
+        "usingComponents": true
    },
-    "mp-toutiao" : {
-        "usingComponents" : true
+    "mp-toutiao": {
+        "usingComponents": true
    },
-    "uniStatistics" : {
-        "enable" : false
+    "uniStatistics": {
+        "enable": false
    },
+<<<<<<< HEAD
    "vueVersion" : "3",
    "locale" : "zh-Hans"
 }
+=======
+    "vueVersion": "3"
+}
+>>>>>>> 8260c417e21af16b318dd9155b55aa00378c20a5
@@ -219,7 +219,6 @@
            <text class="file-name" @click="onPickBackup(b)">{{ b.name }}</text>
            <view class="file-acts">
              <view class="ico ico-path" @click.stop="onShowPath(b)"></view>
-              <view class="ico ico-share" @click.stop="onShareFile(b)"></view>
            </view>
          </view>
        </scroll-view>
@@ -243,7 +242,7 @@ import { listPasswords, getPassword, savePassword, deletePassword, getSessionKey
 import { generatePassword } from '@/utils/crypto';
 import { pickImageAsBase64 } from '@/utils/image';
 // #ifdef APP-PLUS
-import { exportBackupFile, shareBackupFile, listBackupFiles, readBackupFile, clearBackupFiles, pickSecFile, readBackupFromUri } from '@/utils/backup';
+import { exportBackupFile, listBackupFiles, readBackupFile, clearBackupFiles, pickSecFile, readBackupFromUri } from '@/utils/backup';
 // #endif

 const ADVANCED = '高级';
@@ -496,9 +495,8 @@ async function onExport() {
  }
  try {
    const dump = await getExportPlainDump();
-    const url = await exportBackupFile(dump, pwd);
-    uni.showToast({ title: '备份已生成', icon: 'none' });
-    await shareBackupFile(url);
+    await exportBackupFile(dump, pwd);
+    uni.showToast({ title: '备份已生成，可在导入列表查看', icon: 'none' });
  } catch (e: any) {
    uni.showToast({ title: e?.message || '导出失败', icon: 'none' });
  }
@@ -526,15 +524,15 @@ async function onPickBackup(item: { name: string; localUrl: string }) {
 }

 async function onPickFromFiles() {
-  const uri = await pickSecFile();
-  if (!uri) {
-    uni.showToast({ title: '未选择文件', icon: 'none' });
+  const picked = await pickSecFile();
+  if (!picked.uri) {
+    uni.showToast({ title: picked.error || '未选择文件', icon: 'none' });
    return;
  }
  const pwd = await askPassword('输入所选备份文件的密码');
  if (pwd === null) return;
  try {
-    const dump = await readBackupFromUri(uri, pwd);
+    const dump = await readBackupFromUri(picked.uri, pwd);
    confirmRestore(dump, pwd);
  } catch (e: any) {
    uni.showToast({ title: e?.message || '恢复失败', icon: 'none' });
@@ -586,14 +584,10 @@ function onShowPath(item: { name: string; localUrl: string }) {
  uni.showModal({ title: '文件路径', content: item.localUrl, showCancel: false, confirmText: '知道了' });
 }

-async function onShareFile(item: { name: string; localUrl: string }) {
-  await shareBackupFile(item.localUrl);
-}
-
 function onClearBackupFiles() {
  uni.showModal({
    title: '清空备份文件',
-    content: '将删除本机 _doc/backups 下所有 .sec 备份（已分享到外部的副本不受影响）。确定继续？',
+    content: '将删除本机 _doc/backups 下所有 .sec 备份（已转移到外部的副本不受影响）。确定继续？',
    confirmText: '清空',
    confirmColor: '#e53935',
    success: async (res) => {
@@ -1053,7 +1047,6 @@ async function onSave() {
 .file-acts {
  display: flex;
  align-items: center;
-  gap: 18px;
 }

 .ico-path {
@@ -1062,12 +1055,6 @@ async function onSave() {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%235a6472'%3E%3Cpath d='M11 7h2v2h-2zm0 4h2v6h-2zm1-9C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.41 0-8-3.59-8-8s3.59-8 8-8 8 3.59 8 8-3.59 8-8 8z'/%3E%3C/svg%3E");
 }

-.ico-share {
-  width: 20px;
-  height: 20px;
-  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%235a6472'%3E%3Cpath d='M18 16.08c-.76 0-1.44.3-1.96.77L8.91 12.7c.05-.23.09-.46.09-.7s-.04-.47-.09-.7l7.05-4.11c.54.5 1.25.81 2.04.81 1.66 0 3-1.34 3-3s-1.34-3-3-3-3 1.34-3 3c0 .24.04.47.09.7L8.04 9.81C7.5 9.31 6.79 9 6 9c-1.66 0-3 1.34-3 3s1.34 3 3 3c.79 0 1.5-.31 2.04-.81l7.12 4.16c-.05.21-.08.43-.08.65 0 1.61 1.31 2.92 2.92 2.92 1.61 0 2.92-1.31 2.92-2.92s-1.31-2.92-2.92-2.92z'/%3E%3C/svg%3E");
-}
-
 .list {
  flex: 1;
 }
@@ -77,23 +77,44 @@ export async function exportBackupFile(
      w.write(content);
    }, rej);
  });
-  return fileEntry.toLocalURL ? fileEntry.toLocalURL() : fileEntry.fullPath;
+  // 返回 _doc 相对路径：可跨设备（真机/模拟器包名不同）
+  return `_doc/backups/${name}`;
 }

-/** 调起系统分享，把备份文件另存到网盘/微信收藏等（失败静默，不影响已生成文件） */
-export function shareBackupFile(localUrl: string): Promise<void> {
-  const p = plusAny();
-  return new Promise((resolve) => {
-    try {
-      p.share.sendWithSystem(
-        { type: "file", files: [localUrl] },
-        () => resolve(),
-        () => resolve(),
-      );
-    } catch {
-      resolve();
+/** 用 Java 文件 IO 读取绝对路径文本（不经过 content resolver，真实机型可用） */
+function readTextByNativePath(p: any, path: string): string {
+  const File = p.android.importClass("java.io.File");
+  const FileInputStream = p.android.importClass("java.io.FileInputStream");
+  const fis = new FileInputStream(new File(path));
+  try {
+    let out = "";
+    let b = fis.read();
+    // 备份文件为 JSON 文本且体积很小，逐字节读取避免跨语言 byte[] 桥接问题
+    while (b !== -1) {
+      out += String.fromCharCode(b);
+      b = fis.read();
    }
-  });
+    // Latin-1 逐字节拼接后还原 UTF-8 再解码
+    return decodeURIComponent(escape(out));
+  } finally {
+    fis.close();
+  }
+}
+
+/** 通过 content resolver 输入流读取文本 */
+function readTextByStream(p: any, is: any): string {
+  const BufferedReader = p.android.importClass("java.io.BufferedReader");
+  const InputStreamReader = p.android.importClass("java.io.InputStreamReader");
+  const reader = new BufferedReader(new InputStreamReader(is));
+  let out = "";
+  let line = reader.readLine();
+  while (line != null) {
+    out += line;
+    line = reader.readLine();
+    if (line != null) out += "\n";
+  }
+  reader.close();
+  return out;
 }

 /** 列出 _doc/backups 下的备份文件 */
@@ -107,7 +128,8 @@ export async function listBackupFiles(): Promise<BackupItem[]> {
    .filter((e) => e.name && e.name.endsWith(".sec"))
    .map((e) => ({
      name: e.name,
-      localUrl: e.toLocalURL ? e.toLocalURL() : e.fullPath,
+      // 统一用 _doc 相对路径，跨设备（包名不同）保持稳定
+      localUrl: `_doc/backups/${e.name}`,
    }));
 }

@@ -169,10 +191,27 @@ export async function clearBackupFiles(): Promise<number> {
  return targets.length;
 }

-/** 调起系统文件选择器，返回所选文件的 content URI（取消或失败返回 null） */
-export function pickSecFile(): Promise<string | null> {
+/** 调起系统文件选择器，返回所选文件（content URI 或绝对路径）；取消/失败返回 null，异常信息在 error */
+export function pickSecFile(): Promise<{ uri: string | null; error?: string }> {
  const p = plusAny();
  return new Promise((resolve) => {
+    let settled = false;
+    const done = (r: { uri: string | null; error?: string }) => {
+      if (!settled) {
+        settled = true;
+        resolve(r);
+      }
+    };
+    // 优先 HTML5+ 原生选择器：不依赖 activity result 回传，真实机型稳定可用
+    if (typeof p.io.chooseFile === "function") {
+      p.io.chooseFile(
+        (path: string) => done({ uri: path }),
+        (err: any) =>
+          done({ uri: null, error: err?.message || "文件选择失败" }),
+        { extension: ".sec" },
+      );
+      return;
+    }
    try {
      const main = p.android.runtimeMainActivity();
      const Intent = p.android.importClass("android.content.Intent");
@@ -189,9 +228,9 @@ export function pickSecFile(): Promise<string | null> {
        if (requestCode === REQUEST) {
          if (resultCode === -1 && data) {
            const uri = data.getData();
-            resolve(uri ? uri.toString() : null);
+            done({ uri: uri ? uri.toString() : null });
          } else {
-            resolve(null);
+            done({ uri: null });
          }
          return;
        }
@@ -201,13 +240,18 @@ export function pickSecFile(): Promise<string | null> {
        Intent.createChooser(intent, "选择备份文件"),
        REQUEST,
      );
-    } catch {
-      resolve(null);
+      // 新版运行时结果不回传 JS 钩子，超时兜底解除挂起
+      setTimeout(
+        () => done({ uri: null, error: "文件选择器无响应" }),
+        5 * 60 * 1000,
+      );
+    } catch (e: any) {
+      done({ uri: null, error: e?.message || "调起文件选择器失败" });
    }
  });
 }

-/** 读取 content URI 文本并用密码解密（供“从文件选择 .sec”恢复） */
+/** 读取所选文件（content URI 或绝对路径）并用密码解密 */
 export async function readBackupFromUri(
  uriStr: string,
  password: string,
@@ -215,25 +259,26 @@ export async function readBackupFromUri(
  const p = plusAny();
  const content: string = await new Promise((resolve, reject) => {
    try {
+      if (!uriStr.startsWith("content://")) {
+        // chooseFile 返回的是本机文件路径：解析为绝对路径后用原生 IO 读取
+        let path = uriStr;
+        try {
+          path = p.io.convertLocalFileSystemURL(uriStr) || uriStr;
+        } catch {
+          // 已是绝对路径，转换失败时沿用原值
+        }
+        path = path.replace(/^file:\/\//, "");
+        const File = p.android.importClass("java.io.File");
+        if (!new File(path).exists()) throw new Error("找不到所选文件");
+        resolve(readTextByNativePath(p, path));
+        return;
+      }
      const main = p.android.runtimeMainActivity();
      const Uri = p.android.importClass("android.net.Uri");
      const uri = Uri.parse(uriStr);
      const resolver = main.getContentResolver();
      const is = resolver.openInputStream(uri);
-      const BufferedReader = p.android.importClass("java.io.BufferedReader");
-      const InputStreamReader = p.android.importClass(
-        "java.io.InputStreamReader",
-      );
-      const reader = new BufferedReader(new InputStreamReader(is));
-      let out = "";
-      let line = reader.readLine();
-      while (line != null) {
-        out += line;
-        line = reader.readLine();
-        if (line != null) out += "\n";
-      }
-      reader.close();
-      resolve(out);
+      resolve(readTextByStream(p, is));
    } catch (e) {
      reject(e instanceof Error ? e : new Error("读取所选文件失败"));
    }
				`@@ -0,0 +1 @@`
				`https://www.douyin.com/jingxuan?modal_id=7704345703665422713`
				`@@ -0,0 +1 @@`
				{"v": "https://v26-web.douyinvod.com/cde0dd644a3f3fdd8b51ce0d8ac53eea/6aed51d1/video/tos/cn/tos-cn-v-694b40/oUqAC2l4TBfIhPFJ2AcgFisAA41dgvfDqX8DEW/media-video-hvc1/?a=6383&ch=0&cr=8&dr=0&er=1&lr=default&cd=0%7C0%7C0%7C3&cv=1&br=346&bt=346&cs=4&ds=6&mime_type=video_mp4&qs=14&rc=O2RpN2doPDxnNjk1Njs1Z0BpM3l0M3U5cm40ZTYzNDVpM0A2Y2MvNDAuXmAxXmMtNjAxYSNfcGliMmRzX2VhLS1kMi9zcw%3D%3D&btag=c0000e00038000&cquery=100w_100o&dy_q=1793840674&l=20261105090434E2510E54DA3AC7D64180", "a": "https://v26-web.douyinvod.com/e6943c243c43eed40ed2797458968f85/6aed51d1/video/tos/cn/tos-cn-v-694b40/okTEuLCmAKneHtxwXVYxfsIN8ARqAA56GCfeIA/media-audio-und-mp4a/?a=6383&ch=0&cr=8&dr=0&er=1&lr=default&cd=0%7C0%7C0%7C3&cv=1&br=50&bt=50&cs=0&mime_type=video_mp4&qs=1&rc=OTVpOTw6Njo2O2U6ZWQ2NUBpM3l0M3U5cm40ZTYzNDVpM0A1MS80LWBfYy4wLTQxMjQvYSNfcGliMmRzX2VhLS1kMi9zcw%3D%3D&btag=c0000e00038000&cquery=100o_100w&dy_q=1793840674&l=20261105090434E2510E54DA3AC7D64180"}