Merge branch 'claudedo/9a02814991ef42a5a9a063d5ea579d62'

src/ClaudeDo.Worker/External/ExternalMcpService.cs

@@ -62,7 +62,8 @@ public sealed record TaskDto(
     // planning-chain predecessor or DependsOnTaskId hasn't reached Done. See BlockedReason.
     bool Blocked = false,
     string? BlockedReason = null,
-    bool IsManual = false);
+    bool IsManual = false,
+    bool ExpectsNoDiff = false);
 
 // Lean counterpart to TaskDto for writing/status-changing tools: echoes back what changed
 // without re-sending Description/Result, which the caller just sent or already has.
@@ -85,7 +86,8 @@ public sealed record TaskRefDto(
     bool Blocked = false,
     string? BlockedReason = null,
     DirtyBaseWarning? BaseDirty = null,
-    bool IsManual = false);
+    bool IsManual = false,
+    bool ExpectsNoDiff = false);
 
 // tasks is populated when includeDescription=false (the default): lean references, no
 // Description/Result. tasksFull is populated when includeDescription=true: full tasks incl.
@@ -300,6 +302,10 @@ public sealed class ExternalMcpService
                      "dependency cycle. If that predecessor instead ends up Failed or Cancelled, this task simply " +
                      "stays blocked rather than starving silently -- check get_task/list_tasks' blocked field.")]
         string? dependsOnTaskId = null,
+        [Description("true: this task's correct outcome may be an empty diff (verification/audit/research work " +
+                     "that doesn't change code) — the merge helper won't treat a 0-changed-files result as a red " +
+                     "flag. false (default): an empty diff is treated as suspicious, not a clean success.")]
+        bool expectsNoDiff = false,
         CancellationToken cancellationToken = default)
     {
         if (string.IsNullOrWhiteSpace(listId))
@@ -327,6 +333,7 @@ public sealed class ExternalMcpService
             Model = ModelRegistry.NormalizeAlias(model),
             // A manual list holds reminders, so anything filed there starts out manual.
             IsManual = list.IsManual,
+            ExpectsNoDiff = expectsNoDiff,
         };
         await _tasks.AddAsync(entity, cancellationToken);
 
@@ -422,8 +429,8 @@ public sealed class ExternalMcpService
     }
 
     [McpServerTool, Description(
-        "Update an existing task's title, description, commit type, dependsOn link, and/or manual flag. Pass " +
-        "null to leave a field unchanged." + McpToolDocs.NotWhileRunning + McpToolDocs.LeanTaskRef)]
+        "Update an existing task's title, description, commit type, dependsOn link, and/or manual/expects-no-diff " +
+        "flags. Pass null to leave a field unchanged." + McpToolDocs.NotWhileRunning + McpToolDocs.LeanTaskRef)]
     public async Task<TaskRefDto> UpdateTask(
         string taskId,
         string? title = null,
@@ -437,6 +444,10 @@ public sealed class ExternalMcpService
                      "daily prep, and the list handler all skip it (a ConPTY session may still touch it). false: " +
                      "clear the flag. null (default): leave unchanged.")]
         bool? isManual = null,
+        [Description("true: this task's correct outcome may be an empty diff (verification/audit/research work " +
+                     "that doesn't change code) — the merge helper won't treat a 0-changed-files result as a red " +
+                     "flag. false: clear the flag. null (default): leave unchanged.")]
+        bool? expectsNoDiff = null,
         CancellationToken cancellationToken = default)
     {
         taskId = await TaskIdResolver.ResolveAsync(_tasks, taskId, cancellationToken);
@@ -449,6 +460,7 @@ public sealed class ExternalMcpService
         if (description is not null) task.Description = description;
         if (commitType is not null) task.CommitType = commitType;
         if (isManual is not null) task.IsManual = isManual.Value;
+        if (expectsNoDiff is not null) task.ExpectsNoDiff = expectsNoDiff.Value;
         await _tasks.UpdateAsync(task, cancellationToken);
 
         if (dependsOnTaskId is not null)
@@ -986,7 +998,8 @@ public sealed class ExternalMcpService
         t.DependsOnTaskId,
         blocked,
         blockedReason,
-        t.IsManual);
+        t.IsManual,
+        t.ExpectsNoDiff);
 
     // internal: AbortMerge in MergeMcpTools also needs this to build its TaskRefDto result.
     internal static TaskRefDto ToRefDto(TaskEntity t, bool blocked = false, string? blockedReason = null) => new(
@@ -1005,7 +1018,8 @@ public sealed class ExternalMcpService
         blocked,
         blockedReason,
         BaseDirty: null,
-        IsManual: t.IsManual);
+        IsManual: t.IsManual,
+        ExpectsNoDiff: t.ExpectsNoDiff);
 
     // "unknown" covers a Failed task that predates this field (never got a classified reason
     // stamped) — a defined value rather than null so callers don't have to special-case it.