增强应用程序异常处理机制，新增未处理异常日志记录功能，确保在启动和运行期间捕获并记录异常信息。同时，重构配置文件加载逻辑，支持用户目录覆盖默认配置，优化 SQLite 数据库连接字符串处理，确保在不同环境下的兼容性和稳定性。

yy-admin-master/YY.Admin.Core/SqlSugar/SqlSugarSetup.cs

@@ -10,6 +10,7 @@ using System.Collections;
 using System.Collections.Generic;
 using System.Data;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Linq.Dynamic.Core;
 using System.Reflection;
@@ -19,7 +20,9 @@ using Yitter.IdGenerator;
 using YY.Admin.Core;
 using YY.Admin.Core.Extension;
 using YY.Admin.Core.Option;
+using YY.Admin.Core.SeedData;
 using YY.Admin.Core.Session;
+using YY.Admin.Core.Util;
 using DbType = SqlSugar.DbType;
 
 namespace YY.Admin.Core.SqlSugar
@@ -160,6 +163,12 @@ namespace YY.Admin.Core.SqlSugar
                     config.ConnectionString = CryptogramUtil.Decrypt(config.ConnectionString);
                 }
 
+                // SQLite 相对路径默认依赖进程工作目录；快捷方式/从不同目录启动会在别处生成空库，表现为发布后菜单全空
+                if (config.DbType == DbType.Sqlite && !string.IsNullOrWhiteSpace(config.ConnectionString))
+                {
+                    config.ConnectionString = ResolveSqliteConnectionToAbsolutePath(config.ConnectionString);
+                }
+
                 var configureExternalServices = new ConfigureExternalServices
                 {
                     EntityNameService = (type, entity) => // 处理表
@@ -250,6 +259,96 @@ namespace YY.Admin.Core.SqlSugar
             //if (config.DbSettings.EnableInitView) InitView(dbProvider);
             // 初始化种子数据
             if (config.SeedSettings.EnableInitSeed) InitSeedData(db, config);
+            // 关闭全量种子时首启可能无菜单数据；补一份基准菜单，避免打包版本左侧空白
+            EnsureBaselineSysMenuSeed(db, config);
+        }
+
+        /// <summary>
+        /// 将 SQLite 连接串中的相对 DataSource 解析为基于应用程序基目录的绝对路径。
+        /// </summary>
+        private static string ResolveSqliteConnectionToAbsolutePath(string connectionString)
+        {
+            try
+            {
+                var builder = new SqliteConnectionStringBuilder(connectionString);
+                var ds = builder.DataSource;
+                if (string.IsNullOrWhiteSpace(ds))
+                {
+                    return connectionString;
+                }
+
+                if (Path.IsPathFullyQualified(ds))
+                {
+                    return connectionString;
+                }
+
+                // Program Files 等安装目录对普通用户只读；SQLite 库放到 LocalApplicationData
+                var dataDir = AppWritablePaths.EnsureDirectoryExists(AppWritablePaths.DataDirectory);
+                var fileName = Path.GetFileName(ds.TrimStart('.', '/', '\\'));
+                if (string.IsNullOrWhiteSpace(fileName))
+                {
+                    fileName = "Admin.NET.db";
+                }
+
+                builder.DataSource = Path.Combine(dataDir, fileName);
+                return builder.ConnectionString;
+            }
+            catch
+            {
+                return connectionString;
+            }
+        }
+
+        /// <summary>
+        /// 未启用 EnableInitSeed 且 sys_menu 为空时，写入 SysMenu 种子，避免发布后界面无功能菜单。
+        /// </summary>
+        private static void EnsureBaselineSysMenuSeed(SqlSugarScope db, DbConnectionConfig config)
+        {
+            try
+            {
+                if (config.SeedSettings.EnableInitSeed)
+                {
+                    return;
+                }
+
+                if (!string.Equals(config.ConfigId.ToString(), SqlSugarConst.MainConfigId, StringComparison.Ordinal))
+                {
+                    return;
+                }
+
+                if (config.DbType != DbType.Sqlite)
+                {
+                    return;
+                }
+
+                var dbProvider = db.GetConnectionScope(config.ConfigId);
+                var menuEntityInfo = dbProvider.EntityMaintenance.GetEntityInfo(typeof(SysMenu));
+                if (!dbProvider.DbMaintenance.IsAnyTable(menuEntityInfo.DbTableName, false))
+                {
+                    return;
+                }
+
+                var cnt = dbProvider.Queryable<SysMenu>().ClearFilter().Count();
+                if (cnt > 0)
+                {
+                    return;
+                }
+
+                var seedType = typeof(SysMenuSeedData);
+                var seedData = GetSeedData(seedType)?.ToList();
+                if (seedData == null || seedData.Count == 0)
+                {
+                    return;
+                }
+
+                AdjustSeedDataIds(seedData, config);
+                var progress = 0;
+                InsertOrUpdateSeedData(dbProvider, seedType, typeof(SysMenu), seedData, config, ref progress, 1);
+            }
+            catch
+            {
+                // 启动阶段不因兜底种子失败而阻断
+            }
         }
 
         /// <summary>