feat: enhance AI workflow with new ticket creation and fallback handling logic

internal/ai/workflow/registry/registry.go

@@ -137,17 +137,19 @@ func DefaultRegistry() *Registry {
 			},
 			OutputSchema: []VariableSpec{
 				output("ticketId", VariableTypeInteger, "Created ticket ID."),
+				output("ticketNo", VariableTypeString, "Created ticket number."),
+				output("created", VariableTypeBoolean, "Whether the ticket was created."),
+				output("message", VariableTypeString, "Customer-visible ticket creation result."),
 			},
 		},
 		NodeSpec{
-			Type:                            NodeTypeHandoffToHuman,
-			Title:                           "Handoff To Human",
-			Description:                     "Transfer the conversation to human support.",
-			RiskLevel:                       NodeRiskLevelHigh,
-			RequiresConfirmationPredecessor: true,
+			Type:        NodeTypeHandoffToHuman,
+			Title:       "Handoff To Human",
+			Description: "Transfer the conversation to human support.",
+			RiskLevel:   NodeRiskLevelHigh,
 			InputSchema: []VariableSpec{
 				requiredInput("reason", VariableTypeString, "Handoff reason."),
-				requiredInput("confirmed", VariableTypeBoolean, "Confirmation result."),
+				optionalInput("confirmed", VariableTypeBoolean, "Confirmation result."),
 			},
 			OutputSchema: []VariableSpec{
 				output("handoffId", VariableTypeInteger, "Handoff operation ID."),

internal/ai/workflow/validator/validator_test.go

@@ -110,6 +110,30 @@ func TestValidateDefinitionAcceptsConfirmedCreateTicket(t *testing.T) {
 	}
 }
 
+func TestValidateDefinitionAcceptsDirectHandoffToHuman(t *testing.T) {
+	def := dsl.Definition{
+		SchemaVersion: 1,
+		EntryNodeID:   "start_1",
+		Nodes: []dsl.Node{
+			{ID: "start_1", Type: "start"},
+			{ID: "handoff_1", Type: "handoff_to_human", Inputs: map[string]dsl.VariableSelector{
+				"reason": {NodeID: "start_1", Field: "userMessage"},
+			}},
+			{ID: "end_1", Type: "end"},
+		},
+		Edges: []dsl.Edge{
+			{ID: "e1", Source: "start_1", Target: "handoff_1"},
+			{ID: "e2", Source: "handoff_1", Target: "end_1"},
+		},
+	}
+
+	result := validator.ValidateDefinition(def, registry.DefaultRegistry())
+
+	if !result.Valid {
+		t.Fatalf("expected direct handoff_to_human to be valid, got %#v", result.Errors)
+	}
+}
+
 func TestValidateDefinitionRejectsConfirmedInputFromNonConfirmNode(t *testing.T) {
 	def := dsl.Definition{
 		SchemaVersion: 1,