feat: Agent日志查看增加数据库链接配置；优化对话窗口交互

.gitignore

@@ -77,3 +77,4 @@ bin
 /temp
 /AppHome/_backup
 /Tools.Agent.ProbeKbPref
+/working

AgentTest/KbServiceSandboxTests.cs

@@ -138,6 +138,25 @@ namespace AgentTest
             }
         }
 
+        [Test]
+        public void FileCount_RefreshesWhenScopeChanges()
+        {
+            File.WriteAllText(Path.Combine(_root, "root.md"), "root");
+            File.WriteAllText(Path.Combine(_root, "docs", "b.md"), "b");
+            using (var refreshed = new System.Threading.ManualResetEventSlim(false))
+            {
+                _kb.StatsRefreshed += () => refreshed.Set();
+                _kb.EnsureStats();
+                Assert.True(refreshed.Wait(5000), "根目录统计应在后台完成");
+                Assert.Equal(3, _kb.FileCount, "根目录文件数应包含所有知识库文件");
+
+                refreshed.Reset();
+                _kb.SetScope(Path.Combine(_root, "docs"));
+                Assert.True(refreshed.Wait(5000), "切换范围后应重新统计");
+                Assert.Equal(2, _kb.FileCount, "切换范围后文件数应只包含当前目录");
+            }
+        }
+
         [Test]
         public void SetScope_OutsideRoot_FallsBackToRoot()
         {

AppHome/Tools.Agent.xml

@@ -59,6 +59,13 @@
             RunDbConnection 已解密为明文。供无上下文的工具模块（Activator 无参创建）自取上报配置；失败返回 null。
             </summary>
         </member>
+        <member name="M:Tools.MyAgent.AgentRuntime.SaveLocalRunDbConfig(System.String,System.String,System.Boolean)">
+            <summary>
+            把对话上报连接（Agent 日志窗口"连接配置"保存）写回本机 AgentConfig.json。
+            <para>以 JObject 原文补丁方式只改 RunDb* 三个字段，**不触碰其他配置**（避免全量投影覆盖宿主注入项）；
+            连接串经 <see cref="T:Tools.MyAgent.Config.SecretProtector"/> DPAPI 加密落盘，密码不落明文。返回是否成功。</para>
+            </summary>
+        </member>
         <member name="T:Tools.MyAgent.AgentProductContext">
             <summary>
             宿主声明的产品上下文。产品身份来自注册表，项目路径由宿主按权限注入。
@@ -1581,6 +1588,12 @@
             <para>控件布局由 AgentRunLogForm.Designer.cs（设计器）实现；本文件仅含逻辑。</para>
             </summary>
         </member>
+        <member name="F:Tools.MyAgent.Forms.AgentRunLogForm._connection">
+            <summary>当前上报连接（明文，窗口内可经"连接配置"切换）。</summary>
+        </member>
+        <member name="F:Tools.MyAgent.Forms.AgentRunLogForm._table">
+            <summary>当前日志表名。</summary>
+        </member>
         <member name="F:Tools.MyAgent.Forms.AgentRunLogForm._currentRunId">
             <summary>当前选中行的 RunId（详情二次查询用）。</summary>
         </member>
@@ -1610,6 +1623,12 @@
             RichEdit 静默解析失败 ⇒ 空白）。
             </summary>
         </member>
+        <member name="M:Tools.MyAgent.Forms.AgentRunLogForm.OnConnConfigClick(System.Object,System.EventArgs)">
+            <summary>
+            "连接配置"：IP → 账号 → 密码 → 库（下拉拉取 sys.databases）；
+            确定后写回 AgentConfig.json（DPAPI 加密）并刷新本窗口的连接与列表。
+            </summary>
+        </member>
         <member name="M:Tools.MyAgent.Forms.AgentRunLogForm.Q(System.String)">
             <summary>表名标识（白名单已在 Reporter/配置层校验；此处再防御）。</summary>
         </member>
@@ -1630,6 +1649,51 @@
             使用代码编辑器修改此方法的内容。
             </summary>
         </member>
+        <member name="T:Tools.MyAgent.Forms.AgentDbConfigForm">
+            <summary>
+            Agent 日志窗口的数据库连接配置对话框（2026-10-19）：IP / 数据库 / 账号 / 密码 / 表名，
+            支持测试连接；确定后由 AgentRunLogForm 经 <see cref="M:Tools.MyAgent.AgentRuntime.SaveLocalRunDbConfig(System.String,System.String,System.Boolean)"/>
+            写回 AgentConfig.json（连接串 DPAPI 加密落盘，密码不落明文）。
+            </summary>
+        </member>
+        <member name="F:Tools.MyAgent.Forms.AgentDbConfigForm._existing">
+            <summary>现有连接串（预填用；可能为空）。</summary>
+        </member>
+        <member name="M:Tools.MyAgent.Forms.AgentDbConfigForm.Prefill">
+            <summary>用现有连接串预填各输入框（解析失败保持空白，不阻断）。</summary>
+        </member>
+        <member name="M:Tools.MyAgent.Forms.AgentDbConfigForm.OnDbDropDown(System.Object,System.EventArgs)">
+            <summary>
+            数据库下拉展开时按当前 IP/账号/密码拉取实例库列表（SELECT name FROM sys.databases）；
+            拉取失败静默保留已输入值（可手填）。每次展开都刷新，改过连接信息后无需重开对话框。
+            </summary>
+        </member>
+        <member name="M:Tools.MyAgent.Forms.AgentDbConfigForm.BuildConnectionString">
+            <summary>按输入拼装连接串（SqlConnectionStringBuilder 负责转义）。</summary>
+        </member>
+        <member name="P:Tools.MyAgent.Forms.AgentDbConfigForm.Table">
+            <summary>表名（含校验，非法字符在保存侧再防御一层）。</summary>
+        </member>
+        <member name="P:Tools.MyAgent.Forms.AgentDbConfigForm.EnableReporting">
+            <summary>是否同时启用对话上报（默认勾选，避免"测试通过但不落库"的旧坑）。</summary>
+        </member>
+        <member name="F:Tools.MyAgent.Forms.AgentDbConfigForm.components">
+            <summary>
+            必需的设计器变量。
+            </summary>
+        </member>
+        <member name="M:Tools.MyAgent.Forms.AgentDbConfigForm.Dispose(System.Boolean)">
+            <summary>
+            清理所有正在使用的资源。
+            </summary>
+            <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
+        </member>
+        <member name="M:Tools.MyAgent.Forms.AgentDbConfigForm.InitializeComponent">
+            <summary>
+            设计器支持所需的方法 - 不要修改
+            使用代码编辑器修改此方法的内容。
+            </summary>
+        </member>
         <member name="T:Tools.MyAgent.Forms.DocLineViewer">
             <summary>
             文档行定位查看器（P4 引用行点击）：只读展示文本类文件，并定位高亮到指定行。
@@ -3664,6 +3728,9 @@
         <member name="P:Tools.MyAgent.wMyAgent.DefaultKbRoot">
             <summary>默认知识库路径：程序输出目录下的 Agent 文件夹（未设置知识库时生效）</summary>
         </member>
+        <member name="P:Tools.MyAgent.wMyAgent.ProductFixedScope">
+            <summary>产品上下文真正固定的搜索子目录；旧宿主把根目录作为范围时视为未固定。</summary>
+        </member>
         <member name="P:Tools.MyAgent.wMyAgent.AgentConfigFilePath">
             <summary>Agent 配置文件：默认 Agent 目录下的 config\AgentConfig.json</summary>
         </member>
@@ -3683,12 +3750,21 @@
         <member name="M:Tools.MyAgent.wMyAgent.WorkingDirForHistory">
             <summary>历史记录固定保存到默认 Agent 目录（与所选知识库无关）</summary>
         </member>
+        <member name="M:Tools.MyAgent.wMyAgent.ApplyWindowModePadding">
+            <summary>独立窗口增加 10px 内边距；嵌入宿主 Tab 时保持原有布局。</summary>
+        </member>
         <member name="M:Tools.MyAgent.wMyAgent.WireRtfEvents">
             <summary>RichTextBox 的点击/悬停交互绑定（启动时调用；新实例不会重复绑定）</summary>
         </member>
         <member name="M:Tools.MyAgent.wMyAgent.RefreshChatRtf">
             <summary>RichBox 模式：整段 RTF 重建（增量渲染缓存）</summary>
         </member>
+        <member name="M:Tools.MyAgent.wMyAgent.IsChatAtBottom(System.Int32@)">
+            <summary>判断聊天区重绘前是否已经位于底部；用户上滚查看历史时保持其视口。</summary>
+        </member>
+        <member name="M:Tools.MyAgent.wMyAgent.RestoreChatScroll(System.Int32)">
+            <summary>恢复聊天区重绘前的首行位置，避免后台刷新把用户拉回回答末尾。</summary>
+        </member>
         <member name="M:Tools.MyAgent.wMyAgent.RebuildAnswerRefs">
             <summary>
             重建引用行表（P4）：从渲染文本中扫出 📎 引用行并解析 路径/章节/行号。

Tools.Agent/AgentRuntime.cs

@@ -134,6 +134,29 @@ namespace Tools.MyAgent
             catch { return null; }
         }
 
+        /// <summary>
+        /// 把对话上报连接（Agent 日志窗口"连接配置"保存）写回本机 AgentConfig.json。
+        /// <para>以 JObject 原文补丁方式只改 RunDb* 三个字段，**不触碰其他配置**（避免全量投影覆盖宿主注入项）；
+        /// 连接串经 <see cref="Config.SecretProtector"/> DPAPI 加密落盘，密码不落明文。返回是否成功。</para>
+        /// </summary>
+        public static bool SaveLocalRunDbConfig(string plainConnection, string table, bool enabled)
+        {
+            try
+            {
+                string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Agent", "config", "AgentConfig.json");
+                var root = File.Exists(path)
+                    ? Newtonsoft.Json.Linq.JObject.Parse(File.ReadAllText(path, System.Text.Encoding.UTF8))
+                    : new Newtonsoft.Json.Linq.JObject();
+                root["RunDbEnabled"] = enabled;
+                root["RunDbConnection"] = Config.SecretProtector.Protect(plainConnection ?? "");
+                root["RunDbTable"] = string.IsNullOrWhiteSpace(table) ? "Agent_RunLog" : table.Trim();
+                Directory.CreateDirectory(System.IO.Path.GetDirectoryName(path));
+                File.WriteAllText(path, root.ToString(Newtonsoft.Json.Formatting.Indented), System.Text.Encoding.UTF8);
+                return true;
+            }
+            catch { return false; }
+        }
+
         private void EnsureDefaultResources()
         {
             Directory.CreateDirectory(DataRoot);

Tools.Agent/Forms/AgentDbConfigForm.cs

+using System;
+using System.Collections.Generic;
+using System.Data.SqlClient;
+using System.Windows.Forms;
+
+namespace Tools.MyAgent.Forms
+{
+    /// <summary>
+    /// Agent 日志窗口的数据库连接配置对话框（2026-10-19）：IP / 数据库 / 账号 / 密码 / 表名，
+    /// 支持测试连接；确定后由 AgentRunLogForm 经 <see cref="AgentRuntime.SaveLocalRunDbConfig"/>
+    /// 写回 AgentConfig.json（连接串 DPAPI 加密落盘，密码不落明文）。
+    /// </summary>
+    public partial class AgentDbConfigForm : Form
+    {
+        /// <summary>现有连接串（预填用；可能为空）。</summary>
+        private readonly string _existing;
+
+        public AgentDbConfigForm(string existingConnection, string table)
+        {
+            _existing = existingConnection ?? "";
+            InitializeComponent();
+            Prefill();
+            txtTable.Text = string.IsNullOrWhiteSpace(table) ? "Agent_RunLog" : table.Trim();
+        }
+
+        /// <summary>用现有连接串预填各输入框（解析失败保持空白，不阻断）。</summary>
+        private void Prefill()
+        {
+            if (_existing.Trim().Length == 0) return;
+            try
+            {
+                var b = new SqlConnectionStringBuilder(_existing);
+                txtServer.Text = b.DataSource ?? "";
+                txtUser.Text = b.UserID ?? "";
+                txtPwd.Text = b.Password ?? "";
+                cmbDb.Text = b.InitialCatalog ?? "";
+            }
+            catch { /* 旧连接串解析失败 → 留空白让用户重填 */ }
+        }
+
+        /// <summary>
+        /// 数据库下拉展开时按当前 IP/账号/密码拉取实例库列表（SELECT name FROM sys.databases）；
+        /// 拉取失败静默保留已输入值（可手填）。每次展开都刷新，改过连接信息后无需重开对话框。
+        /// </summary>
+        private void OnDbDropDown(object sender, EventArgs e)
+        {
+            try
+            {
+                if (txtServer.Text.Trim().Length == 0) return;
+                string current = cmbDb.Text;   // 保留手填值
+                var names = new List<string>();
+                using (var conn = new SqlConnection(BuildConnectionString()))
+                using (var cmd = new SqlCommand(
+                    "SELECT name FROM sys.databases WHERE state = 0 ORDER BY name", conn))
+                {
+                    conn.Open();
+                    using (var reader = cmd.ExecuteReader())
+                        while (reader.Read())
+                            names.Add(Convert.ToString(reader["name"]));
+                }
+                cmbDb.Items.Clear();
+                cmbDb.Items.AddRange(names.ToArray());
+                cmbDb.Text = current;
+            }
+            catch { /* 连不上/权限不足 → 下拉为空，用户仍可手填 */ }
+        }
+
+        /// <summary>按输入拼装连接串（SqlConnectionStringBuilder 负责转义）。</summary>
+        public string BuildConnectionString()
+        {
+            return new SqlConnectionStringBuilder
+            {
+                DataSource = txtServer.Text.Trim(),
+                InitialCatalog = cmbDb.Text.Trim(),
+                UserID = txtUser.Text.Trim(),
+                Password = txtPwd.Text,
+                ConnectTimeout = 5,
+            }.ConnectionString;
+        }
+
+        /// <summary>表名（含校验，非法字符在保存侧再防御一层）。</summary>
+        public string Table => txtTable.Text.Trim();
+
+        /// <summary>是否同时启用对话上报（默认勾选，避免"测试通过但不落库"的旧坑）。</summary>
+        public bool EnableReporting => chkEnable.Checked;
+
+        private void OnTestClick(object sender, EventArgs e)
+        {
+            try
+            {
+                if (txtServer.Text.Trim().Length == 0 || cmbDb.Text.Trim().Length == 0)
+                {
+                    MessageBox.Show(this, "请先填写服务器与数据库。", "测试连接",
+                        MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                    return;
+                }
+                Cursor = Cursors.WaitCursor;
+                using (var conn = new SqlConnection(BuildConnectionString()))
+                using (var cmd = new SqlCommand("SELECT 1", conn))
+                {
+                    conn.Open();
+                    cmd.ExecuteScalar();
+                }
+                Cursor = Cursors.Default;
+                MessageBox.Show(this, "连接成功。", "测试连接", MessageBoxButtons.OK, MessageBoxIcon.Information);
+            }
+            catch (Exception ex)
+            {
+                Cursor = Cursors.Default;
+                MessageBox.Show(this, "连接失败：" + ex.Message, "测试连接",
+                    MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void OnOkClick(object sender, EventArgs e)
+        {
+            if (txtServer.Text.Trim().Length == 0 || cmbDb.Text.Trim().Length == 0)
+            {
+                MessageBox.Show(this, "服务器与数据库为必填项。", "保存",
+                    MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return;
+            }
+            DialogResult = DialogResult.OK;
+        }
+    }
+}

Tools.Agent/Forms/AgentDbConfigForm.resx

+<?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.
+  -->
+  <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" type="xsd:string" use="required" />
+              <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>

Tools.Agent/Forms/AgentRunLogForm.Designer.cs

@@ -28,7 +28,7 @@
         /// </summary>
         private void InitializeComponent()
         {
-            this.panelTop = new System.Windows.Forms.Panel();
+            this.panelTop = new System.Windows.Forms.FlowLayoutPanel();
             this.lblFrom = new System.Windows.Forms.Label();
             this.dtpFrom = new System.Windows.Forms.DateTimePicker();
             this.lblTo = new System.Windows.Forms.Label();
@@ -39,6 +39,7 @@
             this.cmbOutcome = new System.Windows.Forms.ComboBox();
             this.btnRefresh = new System.Windows.Forms.Button();
             this.btnExport = new System.Windows.Forms.Button();
+            this.btnConn = new System.Windows.Forms.Button();
             this.splitMain = new System.Windows.Forms.SplitContainer();
             this.dgv = new System.Windows.Forms.DataGridView();
             this.tabDetails = new System.Windows.Forms.TabControl();
@@ -60,8 +61,10 @@
             this.statusStrip.SuspendLayout();
             this.SuspendLayout();
             //
-            // panelTop
+            // panelTop（FlowLayoutPanel：控件从左到右自动排列，嵌入窄宿主时自动换行，永不重叠）
             //
+            this.panelTop.AutoSize = true;
+            this.panelTop.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
             this.panelTop.Controls.Add(this.lblFrom);
             this.panelTop.Controls.Add(this.dtpFrom);
             this.panelTop.Controls.Add(this.lblTo);
@@ -72,17 +75,17 @@
             this.panelTop.Controls.Add(this.cmbOutcome);
             this.panelTop.Controls.Add(this.btnRefresh);
             this.panelTop.Controls.Add(this.btnExport);
+            this.panelTop.Controls.Add(this.btnConn);
             this.panelTop.Dock = System.Windows.Forms.DockStyle.Top;
             this.panelTop.Location = new System.Drawing.Point(0, 0);
             this.panelTop.Name = "panelTop";
-            this.panelTop.Padding = new System.Windows.Forms.Padding(8, 6, 8, 4);
-            this.panelTop.Size = new System.Drawing.Size(1024, 46);
+            this.panelTop.Padding = new System.Windows.Forms.Padding(8, 2, 8, 4);
             this.panelTop.TabIndex = 0;
             //
             // lblFrom
             //
             this.lblFrom.AutoSize = true;
-            this.lblFrom.Location = new System.Drawing.Point(11, 15);
+            this.lblFrom.Margin = new System.Windows.Forms.Padding(3, 10, 2, 0);
             this.lblFrom.Name = "lblFrom";
             this.lblFrom.Text = "开始";
             //
@@ -97,7 +100,7 @@
             // lblTo
             //
             this.lblTo.AutoSize = true;
-            this.lblTo.Location = new System.Drawing.Point(159, 15);
+            this.lblTo.Margin = new System.Windows.Forms.Padding(6, 10, 2, 0);
             this.lblTo.Name = "lblTo";
             this.lblTo.Text = "结束";
             //
@@ -112,7 +115,7 @@
             // lblUser
             //
             this.lblUser.AutoSize = true;
-            this.lblUser.Location = new System.Drawing.Point(309, 15);
+            this.lblUser.Margin = new System.Windows.Forms.Padding(12, 10, 2, 0);
             this.lblUser.Name = "lblUser";
             this.lblUser.Text = "用户";
             //
@@ -127,7 +130,7 @@
             // lblOutcome
             //
             this.lblOutcome.AutoSize = true;
-            this.lblOutcome.Location = new System.Drawing.Point(491, 15);
+            this.lblOutcome.Margin = new System.Windows.Forms.Padding(12, 10, 2, 0);
             this.lblOutcome.Name = "lblOutcome";
             this.lblOutcome.Text = "结果";
             //
@@ -147,7 +150,7 @@
             this.btnRefresh.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(120)))), ((int)(((byte)(212)))));
             this.btnRefresh.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
             this.btnRefresh.ForeColor = System.Drawing.Color.White;
-            this.btnRefresh.Location = new System.Drawing.Point(619, 9);
+            this.btnRefresh.Margin = new System.Windows.Forms.Padding(12, 4, 3, 0);
             this.btnRefresh.Name = "btnRefresh";
             this.btnRefresh.Size = new System.Drawing.Size(76, 28);
             this.btnRefresh.Text = "刷新";
@@ -157,13 +160,23 @@
             // btnExport
             //
             this.btnExport.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
-            this.btnExport.Location = new System.Drawing.Point(703, 9);
+            this.btnExport.Margin = new System.Windows.Forms.Padding(6, 4, 3, 0);
             this.btnExport.Name = "btnExport";
             this.btnExport.Size = new System.Drawing.Size(76, 28);
             this.btnExport.Text = "导出CSV";
             this.btnExport.UseVisualStyleBackColor = true;
             this.btnExport.Click += new System.EventHandler(this.OnExportCsvClick);
             //
+            // btnConn（窗口内数据库连接配置：IP/账号/密码/库下拉）
+            //
+            this.btnConn.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
+            this.btnConn.Margin = new System.Windows.Forms.Padding(6, 4, 3, 0);
+            this.btnConn.Name = "btnConn";
+            this.btnConn.Size = new System.Drawing.Size(88, 28);
+            this.btnConn.Text = "连接配置";
+            this.btnConn.UseVisualStyleBackColor = true;
+            this.btnConn.Click += new System.EventHandler(this.OnConnConfigClick);
+            //
             // splitMain
             //
             this.splitMain.Dock = System.Windows.Forms.DockStyle.Fill;
@@ -320,6 +333,7 @@
         private System.Windows.Forms.ComboBox cmbOutcome;
         private System.Windows.Forms.Button btnRefresh;
         private System.Windows.Forms.Button btnExport;
+        private System.Windows.Forms.Button btnConn;
         private System.Windows.Forms.SplitContainer splitMain;
         private System.Windows.Forms.DataGridView dgv;
         private System.Windows.Forms.TabControl tabDetails;

Tools.Agent/Forms/AgentRunLogForm.cs

@@ -21,8 +21,10 @@ namespace Tools.MyAgent.Forms
     {
         private const int MaxRows = 500;
 
-        private readonly string _connection;
-        private readonly string _table;
+        /// <summary>当前上报连接（明文，窗口内可经"连接配置"切换）。</summary>
+        private string _connection;
+        /// <summary>当前日志表名。</summary>
+        private string _table;
 
         /// <summary>当前选中行的 RunId（详情二次查询用）。</summary>
         private string _currentRunId;
@@ -295,6 +297,36 @@ namespace Tools.MyAgent.Forms
             txtMetrics.Text = metrics;
         }
 
+        // ══════════════ 连接配置（窗口内直配，2026-10-19） ══════════════
+
+        /// <summary>
+        /// "连接配置"：IP → 账号 → 密码 → 库（下拉拉取 sys.databases）；
+        /// 确定后写回 AgentConfig.json（DPAPI 加密）并刷新本窗口的连接与列表。
+        /// </summary>
+        private void OnConnConfigClick(object sender, EventArgs e)
+        {
+            using (var dlg = new AgentDbConfigForm(_connection, _table))
+            {
+                if (dlg.ShowDialog(this) != DialogResult.OK) return;
+                string plain = dlg.BuildConnectionString();
+                string table = dlg.Table;
+                if (!AgentRuntime.SaveLocalRunDbConfig(plain, table, dlg.EnableReporting))
+                {
+                    AgentUtils.Toast("保存到配置文件失败（AgentConfig.json 不可写）", 4000);
+                    return;
+                }
+                _connection = plain;   // 本窗口立即生效，无需重开
+                _table = table;
+                _currentRunId = null;
+                SetDetailText("（已切换连接，请选择记录）", "（已切换连接）");
+                LoadUsers();
+                RefreshList();
+                AgentUtils.Toast(dlg.EnableReporting
+                    ? "已保存并启用对话上报；引擎侧在下次应用配置（重启客户端或设置页确定）后生效"
+                    : "已保存连接；对话上报保持关闭（仅本窗口查询用）", 4000);
+            }
+        }
+
         // ══════════════ 导出 ══════════════
 
         private void OnExportCsvClick(object sender, EventArgs e)

Tools.Agent/Kb/KbService.cs

@@ -116,6 +116,7 @@ namespace Tools.MyAgent.Kb
         private volatile int _fileCount = FileCountUnknown;
         private volatile string _formatsSummary = "";
         private volatile string _structureDigest = "";
+        private volatile string _statsScope = "";
         private DateTime _fileCountStamp = DateTime.MinValue;
         private readonly object _statsLock = new object();
         private bool _statsRunning;
@@ -146,7 +147,9 @@ namespace Tools.MyAgent.Kb
                 _structureDigest = "";
                 return;
             }
-            if (_fileCount >= 0 && DateTime.Now - _fileCountStamp < StatsTtl)
+            if (_fileCount >= 0
+                && string.Equals(_statsScope, SearchRoot ?? "", StringComparison.OrdinalIgnoreCase)
+                && DateTime.Now - _fileCountStamp < StatsTtl)
                 return;
 
             lock (_statsLock)
@@ -156,7 +159,6 @@ namespace Tools.MyAgent.Kb
             }
 
             EnsureWatcher();
-            var root = Root;
             var searchRoot = SearchRoot;
             // P1 扫描可中断：统计扫描带超时取消（60 秒），超时后真正终止后台枚举，避免残留任务占满 IO
             var statsCts = new CancellationTokenSource(TimeSpan.FromSeconds(60));
@@ -168,7 +170,7 @@ namespace Tools.MyAgent.Kb
                 var groups = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
                 try
                 {
-                    foreach (var file in SafeEnumerateFiles(root, statsCts.Token))
+                    foreach (var file in SafeEnumerateFiles(searchRoot, statsCts.Token))
                     {
                         count++;
                         var ext = Path.GetExtension(file).ToLowerInvariant();
@@ -184,12 +186,19 @@ namespace Tools.MyAgent.Kb
                 catch (OperationCanceledException) { count = FileCountUnknown; }
                 catch { count = FileCountUnknown; }
                 try { digest = BuildStructureDigest(searchRoot, 30, 1000, IsConfiguredFileAllowed); } catch { digest = ""; }
+                bool scopeChanged = !string.Equals(SearchRoot, searchRoot, StringComparison.OrdinalIgnoreCase);
+                lock (_statsLock) { _statsRunning = false; }
+                try { statsCts.Dispose(); } catch { }
+                if (scopeChanged)
+                {
+                    EnsureStats();
+                    return;
+                }
                 _fileCount = count;
                 _formatsSummary = formats;
                 _structureDigest = digest;
+                _statsScope = searchRoot ?? "";
                 _fileCountStamp = DateTime.Now;
-                lock (_statsLock) { _statsRunning = false; }
-                try { statsCts.Dispose(); } catch { }
                 StatsRefreshed?.Invoke();
             });
         }
@@ -221,6 +230,10 @@ namespace Tools.MyAgent.Kb
         private void InvalidateStats()
         {
             _fileCount = FileCountUnknown;
+            _fileCountStamp = DateTime.MinValue;
+            _statsScope = "";
+            _formatsSummary = "";
+            _structureDigest = "";
             EnsureStats();
             // 索引不再全量失效：变更由 FileSystemWatcher → KbIndex 单文件增量处理（P1），
             // KbIndex 内部 15 分钟兜底重扫负责补齐丢事件场景
@@ -241,6 +254,7 @@ namespace Tools.MyAgent.Kb
             _statsWatcher = null;
             _fileCount = FileCountUnknown;
             _fileCountStamp = DateTime.MinValue;
+            _statsScope = "";
             _formatsSummary = "";
             _structureDigest = "";
         }
@@ -382,26 +396,21 @@ namespace Tools.MyAgent.Kb
         /// <summary>设置搜索范围；空表示整个知识库根目录。越界或非法路径会回退为整个知识库，避免越权访问。</summary>
         public void SetScope(string path)
         {
-            if (string.IsNullOrWhiteSpace(path))
+            string next = "";
+            if (!string.IsNullOrWhiteSpace(path))
             {
-                Scope = "";
-                return;
-            }
-
                 try
                 {
                     string scope = NormPath(path);
-                if (string.IsNullOrEmpty(Root) || !IsWithin(NormPath(Root), scope))
-                {
-                    Scope = "";
-                    return;
-                }
-                Scope = scope;
+                    if (!string.IsNullOrEmpty(Root) && IsWithin(NormPath(Root), scope))
+                        next = scope;
                 }
-            catch
-            {
-                Scope = "";
+                catch { }
             }
+
+            if (string.Equals(Scope, next, StringComparison.OrdinalIgnoreCase)) return;
+            Scope = next;
+            InvalidateStats();
         }
 
         /// <summary>实际检索根目录：限定目录优先，否则为知识库根目录</summary>
@@ -678,7 +687,7 @@ namespace Tools.MyAgent.Kb
             try
             {
                 int count = 0;
-                foreach (var _ in SafeEnumerateFiles(Root, ct)) count++;
+                foreach (var _ in SafeEnumerateFiles(SearchRoot, ct)) count++;
                 return count;
             }
             catch (OperationCanceledException) { return 0; }
@@ -692,7 +701,7 @@ namespace Tools.MyAgent.Kb
             var groups = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
             try
             {
-                foreach (var file in SafeEnumerateFiles(Root, ct))
+                foreach (var file in SafeEnumerateFiles(SearchRoot, ct))
                 {
                     var ext = Path.GetExtension(file).ToLowerInvariant();
                     if (string.IsNullOrEmpty(ext)) ext = "(无扩展名)";

Tools.Agent/Tools.Agent.csproj

@@ -147,6 +147,12 @@
     <Compile Include="Forms\AgentRunLogForm.Designer.cs">
       <DependentUpon>AgentRunLogForm.cs</DependentUpon>
     </Compile>
+    <Compile Include="Forms\AgentDbConfigForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Forms\AgentDbConfigForm.Designer.cs">
+      <DependentUpon>AgentDbConfigForm.cs</DependentUpon>
+    </Compile>
     <Compile Include="Forms\DocLineViewer.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -197,6 +203,9 @@
     <EmbeddedResource Include="Forms\AgentRunLogForm.resx">
       <DependentUpon>AgentRunLogForm.cs</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="Forms\AgentDbConfigForm.resx">
+      <DependentUpon>AgentDbConfigForm.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="Forms\AgentSettingsForm.resx">
       <DependentUpon>AgentSettingsForm.cs</DependentUpon>
     </EmbeddedResource>