fix(scripting): T3 code quality 修复

- C1: 脚本运行时异常未捕获导致 500（新增 catch-all Failed 日志+包装）
- I1: DateTime.TryParse 误判日期样字符串（改为严格 ISO-8601 正则前置）
- M1: IScriptExecutionService XML 注释补 Logger
- M2: TestExecuteAsync → ExecuteTestAsync 命名一致性
- M7: 递归深度 ++ 移入 try 块保证 finally 配对

T3 code quality review fixes

src/modules/scripting/Application/Services/IScriptExecutionService.cs

@@ -2,7 +2,7 @@ using Scripting.Application.DTOs;
 
 namespace Scripting.Application.Services;
 
-/// <summary>脚本执行服务：编译+运行 C# 脚本，注入 MediatR/CurrentUser/CancellationToken，并写执行日志。</summary>
+/// <summary>脚本执行服务：编译+运行 C# 脚本，注入 MediatR/CurrentUser/CancellationToken/Logger，并写执行日志。</summary>
 public interface IScriptExecutionService
 {
     /// <summary>按 Id 执行已发布脚本（按钮动作链用）。</summary>
@@ -12,5 +12,5 @@ public interface IScriptExecutionService
     Task<ScriptExecutionResult> ExecuteByNameAsync(string scriptName, string inputJson, CancellationToken ct);
 
     /// <summary>测试运行：不校验 Published 状态，允许草稿直接测，仍写日志（FunctionName 标 [TEST]）。</summary>
-    Task<ScriptExecutionResult> TestExecuteAsync(Guid scriptId, string inputJson, CancellationToken ct);
+    Task<ScriptExecutionResult> ExecuteTestAsync(Guid scriptId, string inputJson, CancellationToken ct);
 }

src/modules/scripting/Application/Services/ScriptExecutionService.cs

@@ -57,6 +57,12 @@ public partial class ScriptExecutionService(
         RegexOptions.Compiled | RegexOptions.CultureInvariant)]
     private static partial Regex ForbiddenApiRegex { get; }
 
+    /// <summary>严格 ISO-8601 日期正则：要求 YYYY-MM-DD（可带时间/时区）。防止 "2026"/"2026-07" 等日期样字符串误判为 DateTime。</summary>
+    [GeneratedRegex(
+        @"^\d{4}-\d{2}-\d{2}([T ]\d{2}:\d{2}(:\d{2})?(\.\d+)?(Z|[+-]\d{2}:?\d{2})?)?$",
+        RegexOptions.Compiled | RegexOptions.CultureInvariant)]
+    private static partial Regex Iso8601Regex { get; }
+
     // ── 公共入口 ──────────────────────────────────────────────────────────
 
     /// <inheritdoc />
@@ -68,7 +74,7 @@ public partial class ScriptExecutionService(
         => ExecuteAsync(null, scriptName, inputJson, requirePublished: true, isTest: false, ct);
 
     /// <inheritdoc />
-    public Task<ScriptExecutionResult> TestExecuteAsync(Guid scriptId, string inputJson, CancellationToken ct)
+    public Task<ScriptExecutionResult> ExecuteTestAsync(Guid scriptId, string inputJson, CancellationToken ct)
         => ExecuteAsync(scriptId, null, inputJson, requirePublished: false, isTest: true, ct);
 
     // ── 核心执行 ──────────────────────────────────────────────────────────
@@ -117,12 +123,13 @@ public partial class ScriptExecutionService(
             throw new BusinessException($"脚本包含禁用 API: {forbiddenMatch.Value}");
         }
 
-        // 深度计数 +1（finally 归位）
-        _recursionDepth.Value++;
         var stopwatch = Stopwatch.StartNew();
         var logger = new ScriptLogger();
         try
         {
+            // 深度计数 +1（finally 归位），置于 try 内保证与 finally 配对
+            _recursionDepth.Value++;
+
             // 超时令牌：默认 5s，上限 30s
             var timeoutMs = function.TimeoutMs <= 0 ? DefaultTimeoutMs : Math.Min(function.TimeoutMs, MaxTimeoutMs);
             using var timeoutCts = CancellationTokenSource.CreateLinkedTokenSource(ct);
@@ -170,6 +177,17 @@ public partial class ScriptExecutionService(
                 inputJson, null, ex.Message, stopwatch.ElapsedMilliseconds, logger.ToText(), ct);
             throw new BusinessException($"脚本执行失败: {ex.Message}");
         }
+        catch (Exception ex)
+        {
+            // 脚本运行时异常（NullReference/DivideByZero/IndexOutOfRange/InvalidCast/KeyNotFound 等）：
+            // 统一记录 Failed 日志并包装为 BusinessException，避免原始异常冒泡成 500 带堆栈。
+            // 超时场景下 ct 可能已取消，用 CancellationToken.None 保证日志落库
+            stopwatch.Stop();
+            await AddLogAsync(function, isTest, ScriptExecutionStatus.Failed,
+                inputJson, null, ex.Message, stopwatch.ElapsedMilliseconds, logger.ToText(),
+                ct.IsCancellationRequested ? CancellationToken.None : ct);
+            throw new BusinessException($"脚本执行失败: {ex.Message}");
+        }
         finally
         {
             _recursionDepth.Value--;
@@ -301,16 +319,17 @@ public partial class ScriptExecutionService(
     {
         var str = element.GetString() ?? string.Empty;
 
-        // ISO 8601 日期优先
-        if (DateTime.TryParse(str, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind, out var dt))
-        {
-            return dt;
-        }
-        // Guid
+        // Guid 优先（Guid 串不会匹配 ISO-8601 日期正则）
         if (Guid.TryParse(str, out var guid))
         {
             return guid;
         }
+        // 严格 ISO-8601 日期：先正则白名单，再 TryParse，避免 "2026"/"2026-07" 等日期样字符串误判
+        if (Iso8601Regex.IsMatch(str)
+            && DateTime.TryParse(str, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind, out var dt))
+        {
+            return dt;
+        }
         return str;
     }