feat: add workflow rollback and execution replay commands

New API methods:
- RollbackWorkflow(workflowID, version) - roll back to a previous version
- ReplayExecution(id, mode) - replay failed executions (full or from_failed)
- ListWorkflowVersions(workflowID, page, pageSize) - list version history

New types: ReplayResponse, WorkflowVersion, VersionListResponse

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: ramanv0

pkg/api/client.go

@@ -169,6 +169,29 @@ func (c *Client) CancelExecution(id string) error {
 	return c.post("/api/workflow-executions/"+id+"/cancel", nil, nil)
 }
 
+func (c *Client) ReplayExecution(id, mode string) (*ReplayResponse, error) {
+	body := map[string]string{"mode": mode}
+	var out ReplayResponse
+	if err := c.post("/api/workflow-executions/"+id+"/replay", body, &out); err != nil {
+		return nil, err
+	}
+	return &out, nil
+}
+
+func (c *Client) RollbackWorkflow(workflowID string, version int) error {
+	path := fmt.Sprintf("/api/workflows/%s/rollback?version=%d", workflowID, version)
+	return c.post(path, nil, nil)
+}
+
+func (c *Client) ListWorkflowVersions(workflowID string, page, pageSize int) (*VersionListResponse, error) {
+	path := fmt.Sprintf("/api/workflows/%s/versions?page=%d&page_size=%d", workflowID, page, pageSize)
+	var out VersionListResponse
+	if err := c.get(path, nil, &out); err != nil {
+		return nil, err
+	}
+	return &out, nil
+}
+
 // --- Approvals ---
 
 func (c *Client) ListPendingApprovals() ([]WorkflowApproval, error) {

pkg/api/types.go

@@ -243,3 +243,25 @@ type CreateAPIKeyRequest struct {
 	Scopes    []string `json:"scopes"`
 	ExpiresIn string   `json:"expires_in,omitempty"`
 }
+
+type ReplayResponse struct {
+	ExecutionID string `json:"execution_id"`
+}
+
+type WorkflowVersion struct {
+	ID             string `json:"id"`
+	WorkflowID     string `json:"workflow_id"`
+	VersionNumber  int    `json:"version_number"`
+	Name           string `json:"name"`
+	Description    string `json:"description,omitempty"`
+	CreatedByEmail string `json:"created_by_email,omitempty"`
+	CreatedAt      string `json:"created_at"`
+	ChangeSummary  string `json:"change_summary,omitempty"`
+}
+
+type VersionListResponse struct {
+	Versions []WorkflowVersion `json:"versions"`
+	Total    int               `json:"total"`
+	Page     int               `json:"page"`
+	PageSize int               `json:"page_size"`
+}