diff --git a/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Shared/FlowGraphView.razor.cs b/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Shared/FlowGraphView.razor.cs
index fdd5f487..ebf1e14f 100644
--- a/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Shared/FlowGraphView.razor.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Shared/FlowGraphView.razor.cs
@@ -185,7 +185,9 @@ public partial class FlowGraphView : ComponentBase
         FlowStepKind.AttributeWrite => "WRITE",
         FlowStepKind.AttributeWait => "WAIT",
         FlowStepKind.Response => "RESPONSE",
-        FlowStepKind.External => "EXTERNAL",
+        FlowStepKind.ApiCall => "API CALL",
+        FlowStepKind.DbCall => "DATABASE",
+        FlowStepKind.Notify => "NOTIFY",
         _ => "STEP",
     };
 
diff --git a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraph.cs b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraph.cs
index b4a7bbf7..e8afef16 100644
--- a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraph.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraph.cs
@@ -5,7 +5,9 @@ namespace ZB.MOM.WW.ScadaBridge.Commons.Types.Debugging;
 /// <param name="ToEventId">Target step.</param>
 /// <param name="CrossesBoundary">True when the edge crosses the central ↔ site boundary (drawn in the accent colour).</param>
 /// <param name="External">True for an inferred relationship the system did not observe directly — a device echo satisfying a wait after a write (drawn dashed).</param>
-public sealed record FlowEdge(Guid FromEventId, Guid ToEventId, bool CrossesBoundary, bool External);
+/// <param name="Async">True when the target is a fire-and-forget branch the source did not wait for — a cached call or a notification (drawn dashed, plan D4).</param>
+/// <param name="Spawn">True when the target is the first step of a child execution spawned by something other than a route call — a trigger cascade (bolt marker, plan D9).</param>
+public sealed record FlowEdge(Guid FromEventId, Guid ToEventId, bool CrossesBoundary, bool External, bool Async = false, bool Spawn = false);
 
 /// <summary>The projected flow of one execution tree (Flow Debugger design 2026-09-05 §7.2).</summary>
 /// <param name="Steps">Steps in display order (time, then kind rank, then event id).</param>
diff --git a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraphBuilder.cs b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraphBuilder.cs
index 152e1c7f..3e98d657 100644
--- a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraphBuilder.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowGraphBuilder.cs
@@ -129,7 +129,7 @@ public static class FlowGraphBuilder
         FlowStepKind.ScriptRun => 2,
         FlowStepKind.AttributeWrite => 3,
         FlowStepKind.AttributeWait => 4,
-        FlowStepKind.External => 5,
+        FlowStepKind.ApiCall or FlowStepKind.DbCall or FlowStepKind.Notify => 5,
         FlowStepKind.Unknown => 6,
         FlowStepKind.Response => 9,
         _ => 7,
diff --git a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStep.cs b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStep.cs
index 53be7d1e..e69e2234 100644
--- a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStep.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStep.cs
@@ -9,6 +9,8 @@ public enum FlowLane
     Site,
     /// <summary>Attribute / tag layer: attribute writes and their device echoes.</summary>
     Tags,
+    /// <summary>Actors outside ScadaBridge: outbound API calls, database calls and notifications (v1.1, 2026-09-06 plan D2).</summary>
+    External,
 }
 
 /// <summary>What a flow step represents — the projection of an audit channel/kind pair.</summary>
@@ -26,8 +28,12 @@ public enum FlowStepKind
     AttributeWait,
     /// <summary>Synthesized final node — the inbound response (from the inbound row's response summary).</summary>
     Response,
-    /// <summary>An outbound API / DB / notification row emitted by a traced run (shown, not chained across the boundary).</summary>
-    External,
+    /// <summary>An <c>ApiOutbound</c> row (<c>ExternalSystem.Call</c> / <c>CachedCall</c>) — one node per operation, lifecycle folded in.</summary>
+    ApiCall,
+    /// <summary>A <c>DbOutbound</c> row (<c>Database.Query</c> / <c>Execute</c> / <c>CachedWrite</c>).</summary>
+    DbCall,
+    /// <summary>A <c>Notification</c> row (<c>Notify.Send</c> and its central delivery).</summary>
+    Notify,
     /// <summary>A channel/kind this build does not recognise — rendered, never dropped.</summary>
     Unknown,
 }
@@ -45,8 +51,29 @@ public enum FlowStepOutcome
     Predicted,
     /// <summary>No trace event exists for this position (e.g. site on an older build).</summary>
     NotTraced,
+    /// <summary>An outbound operation whose latest lifecycle row is non-terminal (Submitted / Forwarded / Attempted).</summary>
+    Pending,
+    /// <summary>An outbound operation that ended Parked or Discarded — retry/discard lives on the Site Calls / Notification pages.</summary>
+    Parked,
 }
 
+/// <summary>One audit row of a folded outbound operation's lifecycle (<see cref="FlowStep.Lifecycle"/>).</summary>
+/// <param name="EventId">The audit row's id.</param>
+/// <param name="Kind">Audit kind name (<c>CachedSubmit</c>, <c>ApiCallCached</c>, <c>CachedResolve</c>, <c>NotifyDeliver</c>, …).</param>
+/// <param name="Status">Audit status name (<c>Submitted</c>, <c>Forwarded</c>, <c>Attempted</c>, <c>Delivered</c>, <c>Parked</c>, …).</param>
+/// <param name="OccurredAtUtc">When the row was written.</param>
+/// <param name="Node">Node that wrote it.</param>
+/// <param name="ErrorMessage">Error summary on a failed attempt.</param>
+/// <param name="DurationMs">The row's own duration, when it has one.</param>
+public sealed record FlowLifecycleRow(
+    Guid EventId,
+    string Kind,
+    string Status,
+    DateTimeOffset OccurredAtUtc,
+    string? Node,
+    string? ErrorMessage,
+    int? DurationMs);
+
 /// <summary>
 /// One node of the flow graph — a central-side projection of a <c>ScriptTrace</c> /
 /// <c>ApiInbound.InboundRequest</c> <see cref="ZB.MOM.WW.Audit.AuditEvent"/>. Never serialized
@@ -70,4 +97,5 @@ public sealed record FlowStep(
     string? Node,
     string? Instance,
     string? Target,
-    ScriptTraceExtra? Extra);
+    ScriptTraceExtra? Extra,
+    IReadOnlyList<FlowLifecycleRow>? Lifecycle = null);
diff --git a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStepProjector.cs b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStepProjector.cs
index 723e0d4a..0803c7ad 100644
--- a/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStepProjector.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.Commons/Types/Debugging/FlowStepProjector.cs
@@ -63,10 +63,12 @@ public static class FlowStepProjector
             && string.Equals(kind, nameof(AuditKind.InboundRequest), StringComparison.Ordinal))
             return FlowStepKind.InboundRequest;
 
-        if (string.Equals(channel, nameof(AuditChannel.ApiOutbound), StringComparison.Ordinal)
-            || string.Equals(channel, nameof(AuditChannel.DbOutbound), StringComparison.Ordinal)
-            || string.Equals(channel, nameof(AuditChannel.Notification), StringComparison.Ordinal))
-            return FlowStepKind.External;
+        if (string.Equals(channel, nameof(AuditChannel.ApiOutbound), StringComparison.Ordinal))
+            return FlowStepKind.ApiCall;
+        if (string.Equals(channel, nameof(AuditChannel.DbOutbound), StringComparison.Ordinal))
+            return FlowStepKind.DbCall;
+        if (string.Equals(channel, nameof(AuditChannel.Notification), StringComparison.Ordinal))
+            return FlowStepKind.Notify;
 
         return FlowStepKind.Unknown;
     }
diff --git a/src/ZB.MOM.WW.ScadaBridge.ScriptAnalysis/FlowShapePredictor.cs b/src/ZB.MOM.WW.ScadaBridge.ScriptAnalysis/FlowShapePredictor.cs
index 7bd313a5..2e6468b6 100644
--- a/src/ZB.MOM.WW.ScadaBridge.ScriptAnalysis/FlowShapePredictor.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.ScriptAnalysis/FlowShapePredictor.cs
@@ -385,20 +385,20 @@ public static class FlowShapePredictor
             if (receiverText == "ExternalSystem" && member is "Call" or "CachedCall")
             {
                 var (system, dependent) = LiteralOrExpr(args.FirstOrDefault()?.Expression);
-                _b.AddNode(FlowStepKind.External, _lane, $"ExternalSystem.{member}({system})", dependent, null);
+                _b.AddNode(FlowStepKind.ApiCall, _lane, $"ExternalSystem.{member}({system})", dependent, null);
                 return true;
             }
 
             if (receiverText == "Database")
             {
                 var (conn, dependent) = LiteralOrExpr(args.FirstOrDefault()?.Expression);
-                _b.AddNode(FlowStepKind.External, _lane, $"Database.{member}({conn})", dependent, null);
+                _b.AddNode(FlowStepKind.DbCall, _lane, $"Database.{member}({conn})", dependent, null);
                 return true;
             }
 
             if (receiverText == "Notify" && member == "Send")
             {
-                _b.AddNode(FlowStepKind.External, _lane, "Notify.Send", false, null);
+                _b.AddNode(FlowStepKind.Notify, _lane, "Notify.Send", false, null);
                 return true;
             }
 
diff --git a/tests/ZB.MOM.WW.ScadaBridge.Commons.Tests/Debugging/FlowStepProjectorTests.cs b/tests/ZB.MOM.WW.ScadaBridge.Commons.Tests/Debugging/FlowStepProjectorTests.cs
new file mode 100644
index 00000000..fe9e8731
--- /dev/null
+++ b/tests/ZB.MOM.WW.ScadaBridge.Commons.Tests/Debugging/FlowStepProjectorTests.cs
@@ -0,0 +1,50 @@
+using ZB.MOM.WW.ScadaBridge.Commons.Types.Debugging;
+
+namespace ZB.MOM.WW.ScadaBridge.Commons.Tests.Debugging;
+
+/// <summary>
+/// Flow Debugger outbound-calls plan (2026-09-06) Task 0: the Commons vocabulary — External lane,
+/// the three outbound kinds, Pending/Parked outcomes, the lifecycle row, and additive edge/step shapes.
+/// </summary>
+public class FlowStepProjectorTests
+{
+    private static readonly DateTimeOffset T0 = new(2026, 9, 6, 12, 0, 0, TimeSpan.Zero);
+
+    [Fact]
+    public void Vocabulary_HasExternalLane_ThreeOutboundKinds_AndPendingParkedOutcomes()
+    {
+        Assert.Equal(3, (int)FlowLane.External);
+        Assert.True(Enum.IsDefined(FlowStepKind.ApiCall));
+        Assert.True(Enum.IsDefined(FlowStepKind.DbCall));
+        Assert.True(Enum.IsDefined(FlowStepKind.Notify));
+        Assert.True(Enum.IsDefined(FlowStepKind.Unknown));
+        Assert.False(Enum.GetNames<FlowStepKind>().Contains("External"));
+        Assert.True(Enum.IsDefined(FlowStepOutcome.Pending));
+        Assert.True(Enum.IsDefined(FlowStepOutcome.Parked));
+    }
+
+    [Fact]
+    public void FlowStep_WithoutLifecycle_StillConstructs_AndDefaultsToNull()
+    {
+        var step = new FlowStep(Guid.NewGuid(), null, null, FlowStepKind.ScriptRun, FlowLane.Site, "S", null,
+            T0, null, FlowStepOutcome.Ok, null, null, null, null, null, null, null, null);
+        Assert.Null(step.Lifecycle);
+
+        var row = new FlowLifecycleRow(Guid.NewGuid(), "CachedSubmit", "Submitted", T0, "node-a", null, null);
+        var withLifecycle = step with { Lifecycle = [row] };
+        Assert.Single(withLifecycle.Lifecycle!);
+        Assert.Equal("Submitted", withLifecycle.Lifecycle![0].Status);
+    }
+
+    [Fact]
+    public void FlowEdge_AsyncAndSpawn_DefaultFalse()
+    {
+        var a = Guid.NewGuid();
+        var b = Guid.NewGuid();
+        var edge = new FlowEdge(a, b, false, false);
+        Assert.False(edge.Async);
+        Assert.False(edge.Spawn);
+        Assert.True((edge with { Async = true }).Async);
+        Assert.True(new FlowEdge(a, b, false, false, Async: false, Spawn: true).Spawn);
+    }
+}
diff --git a/tests/ZB.MOM.WW.ScadaBridge.ScriptAnalysis.Tests/FlowShapePredictorTests.cs b/tests/ZB.MOM.WW.ScadaBridge.ScriptAnalysis.Tests/FlowShapePredictorTests.cs
index 084b6ef4..1fa20161 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.ScriptAnalysis.Tests/FlowShapePredictorTests.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.ScriptAnalysis.Tests/FlowShapePredictorTests.cs
@@ -199,8 +199,8 @@ public class FlowShapePredictorTests
             (FlowStepKind.ScriptRun, "Handshake"),
             (FlowStepKind.AttributeWrite, "Cmd"),
             (FlowStepKind.AttributeWait, "Ack"),
-            (FlowStepKind.External, "ExternalSystem.Call(Mes)"),
-            (FlowStepKind.External, "Notify.Send"),
+            (FlowStepKind.ApiCall, "ExternalSystem.Call(Mes)"),
+            (FlowStepKind.Notify, "Notify.Send"),
         ], flow.Nodes.Select(n => (n.Kind, n.Title)).ToList());
         Assert.DoesNotContain(flow.Nodes, n => n.Lane == FlowLane.Central);
         Assert.All(flow.Edges, e => Assert.False(e.CrossesBoundary));