Add elicitation response handlers (OnDecline/OnCancel) to WorkflowStep CRD

[JAORMX]

Summary

The VirtualMCPServer CRD is missing OnDecline and OnCancel fields for workflow steps, which are supported by the implementation for handling elicitation responses.

Current State

Implementation (pkg/vmcp/config/config.go:395-396):

type WorkflowStepConfig struct {
    // ... other fields
    
    // Elicitation response handlers
    OnDecline *ElicitationResponseConfig `json:"on_decline,omitempty"`
    OnCancel  *ElicitationResponseConfig `json:"on_cancel,omitempty"`
}

type ElicitationResponseConfig struct {
    // Action: "skip_remaining", "abort", "continue"
    Action string `json:"action"`
}

CRD (cmd/thv-operator/api/v1alpha1/virtualmcpserver_types.go:223-271):

type WorkflowStep struct {
    // Has Message and Schema for elicitation
    // But NO OnDecline or OnCancel handlers
}

Impact

Users cannot configure workflow behavior when:

• A user explicitly declines an elicitation request
• A user cancels/dismisses an elicitation without responding

This is documented in the proposal (docs/proposals/THV-2106-virtual-mcp-server.md:470-473):

on_decline:
  action: "skip_remaining"
on_cancel:
  action: "abort"

Proposed Solution

Add to WorkflowStep in both CRD files:

1. OnDecline *ElicitationResponseHandler field
2. OnCancel *ElicitationResponseHandler field

Create new type:

type ElicitationResponseHandler struct {
    // Action defines the action to take
    // +kubebuilder:validation:Enum=skip_remaining;abort;continue
    // +kubebuilder:default=abort
    Action string `json:"action,omitempty"`
}

Update the converter to handle these new fields.

Related Files

• pkg/vmcp/config/config.go (implementation)
• cmd/thv-operator/api/v1alpha1/virtualmcpserver_types.go (CRD)
• cmd/thv-operator/api/v1alpha1/virtualmcpcompositetooldefinition_types.go (CRD)
• cmd/thv-operator/pkg/vmcpconfig/converter.go (converter)
• docs/proposals/THV-2106-virtual-mcp-server.md (proposal)