统一 Dump、Logging、Database 等功能的配置文件加载和定义类，优化ConfigLoader，职责分散各个模块。

XP.Common/Database/Configs/ConfigLoader.cs

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+using System.Configuration;
+
+namespace XP.Common.Database.Configs
+{
+    /// <summary>
+    /// SQLite 配置加载器，从 App.config 读取数据库相关配置项 | SQLite configuration loader, reads database-related configuration from App.config
+    /// </summary>
+    public static class ConfigLoader
+    {
+        /// <summary>
+        /// 配置键前缀 | Configuration key prefix
+        /// </summary>
+        private const string KeyPrefix = "Sqlite:";
+
+        /// <summary>
+        /// 从 App.config 加载 SQLite 配置 | Load SQLite configuration from App.config
+        /// </summary>
+        /// <returns>SQLite 配置实体，缺失或无效配置项使用默认值 | SQLite configuration entity, uses default values for missing or invalid items</returns>
+        public static SqliteConfig LoadSqliteConfig()
+        {
+            var config = new SqliteConfig();
+
+            // 加载数据库文件路径 | Load database file path
+            var dbPath = ConfigurationManager.AppSettings[KeyPrefix + "DbFilePath"];
+            if (!string.IsNullOrEmpty(dbPath)) config.DbFilePath = dbPath;
+
+            // 加载连接超时时间 | Load connection timeout
+            var timeout = ConfigurationManager.AppSettings[KeyPrefix + "ConnectionTimeout"];
+            if (int.TryParse(timeout, out var t) && t > 0) config.ConnectionTimeout = t;
+
+            // 加载是否自动创建 | Load create if not exists
+            var createIfNotExists = ConfigurationManager.AppSettings[KeyPrefix + "CreateIfNotExists"];
+            if (bool.TryParse(createIfNotExists, out var c)) config.CreateIfNotExists = c;
+
+            // 加载是否启用 WAL 模式 | Load enable WAL mode
+            var enableWal = ConfigurationManager.AppSettings[KeyPrefix + "EnableWalMode"];
+            if (bool.TryParse(enableWal, out var w)) config.EnableWalMode = w;
+
+            // 加载是否开启 SQL 日志 | Load enable SQL logging
+            var enableSqlLog = ConfigurationManager.AppSettings[KeyPrefix + "EnableSqlLogging"];
+            if (bool.TryParse(enableSqlLog, out var l)) config.EnableSqlLogging = l;
+
+            return config;
+        }
+    }
+}

XP.Common/Database/Configs/SqliteConfig.cs

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+using System;
+using System.IO;
+
+namespace XP.Common.Database.Configs
+{
+    /// <summary>
+    /// SQLite 配置实体（从 App.config 读取）| SQLite configuration entity (loaded from App.config)
+    /// </summary>
+    public class SqliteConfig
+    {
+        /// <summary>
+        /// 数据库文件路径 | Database file path
+        /// </summary>
+        public string DbFilePath { get; set; } = Path.Combine(
+            Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
+            "Files", "Data", "XP.db");
+
+        /// <summary>
+        /// 连接超时时间（秒，默认30）| Connection timeout (seconds, default 30)
+        /// </summary>
+        public int ConnectionTimeout { get; set; } = 30;
+
+        /// <summary>
+        /// 数据库不存在时是否自动创建（默认true）| Whether to auto-create if not exists (default true)
+        /// </summary>
+        public bool CreateIfNotExists { get; set; } = true;
+
+        /// <summary>
+        /// 是否启用 WAL 模式（提升并发性能，默认true）| Whether to enable WAL mode (default true)
+        /// </summary>
+        public bool EnableWalMode { get; set; } = true;
+
+        /// <summary>
+        /// 是否开启日志记录（记录所有SQL操作，默认false）| Whether to enable SQL logging (default false)
+        /// </summary>
+        public bool EnableSqlLogging { get; set; } = false;
+
+        /// <summary>
+        /// 获取 SQLite 连接字符串 | Get SQLite connection string
+        /// </summary>
+        public string GetConnectionString()
+        {
+            var builder = new Microsoft.Data.Sqlite.SqliteConnectionStringBuilder
+            {
+                DataSource = DbFilePath,
+                Cache = Microsoft.Data.Sqlite.SqliteCacheMode.Default,
+                DefaultTimeout = ConnectionTimeout
+            };
+            return builder.ToString();
+        }
+    }
+}