Round 0: the conversion as written (f51fcb6), 22 scenarios, three runs each, PostgreSQL, before any waiver.
Run in two halves (9 + 13 scenarios): 21 min + 14 min.

scenario                       match tolerated waived defect unmapped harness  3x
appointments-book                837        28      0     14        0       0  NO
appointments-cancel              838        27      0     12        0       0  yes
appointments-delete-refused      521        18      0     12        0       0  yes
appointments-department          623        32      0      9        0       0  yes
appointments-double-booking      837        28      0     12        0       0  yes
appointments-invalid-duration    836        28      0     14        0       0  yes
appointments-no-patient           76        17      0      4        0       0  yes
appointments-return              421        15      0      7        0       0  yes
billing-delete-refused           188        54      0     10        0       0  yes
billing-patient                  465        27      0      7        0       0  yes
billing-pay                      266        83      0     41        0       4  yes
billing-return                   192        54      0      6        0       0  yes
billing-unsaved                  291        91      0     11        0       0  yes
login-billing                    109         6      0      4        0       0  yes
login-fail                        45         0      0      7        0       0  yes
login-lov                        111         6      0      4        0       0  yes
login-ok                          42         3      0      3        0       0  yes
main-about                        49         6      0      5        0       0  yes
main-print-schedule               52         6      0      4        0       0  yes
navigation                       824        29      0     27        0       0  yes
patients-find                    580        27      0     11        0       0  yes
patients-query                   310        18      0     16        0       0  yes
total                           8513       603      0    240        0       4
clean (no defect, no harness entry, three runs identical): 0/22