Feat v0.3.2 workflow engine (#16)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

server/store/sqlite/workflows.go

@@ -633,6 +633,19 @@ func (s *WorkflowStore) ListAssignmentsByInstance(ctx context.Context, instanceI
 		ORDER BY created_at ASC`, instanceID)
 }
 
+func (s *WorkflowStore) ListAssignmentsByUser(ctx context.Context, userID string, status string) ([]models.WorkflowAssignment, error) {
+	q := `SELECT id, instance_id, stage, team_id, assigned_to, status,
+	             review_data, claimed_at, completed_at, created_at
+	      FROM workflow_assignments WHERE assigned_to = ?`
+	args := []interface{}{userID}
+	if status != "" {
+		q += " AND status = ?"
+		args = append(args, status)
+	}
+	q += " ORDER BY created_at DESC"
+	return s.queryAssignments(ctx, q, args...)
+}
+
 func (s *WorkflowStore) queryAssignments(ctx context.Context, q string, args ...interface{}) ([]models.WorkflowAssignment, error) {
 	rows, err := DB.QueryContext(ctx, q, args...)
 	if err != nil {