feat(commitments): multi-instalment stepper + edit form

docs/i18n-glossary.md

@@ -90,7 +90,7 @@ Keep these **as-is** across all locales:
 - GDPR acronym by locale:
   - FR = **RGPD**, ES = **RGPD**, NL = **AVG**, EN = **GDPR**, DE = **DSGVO**
 - Rights-text article references: keep `art. 20`, `art. 6`, etc.
-- Placeholders: `{name}`, `{count}`, `{month}`, `{amount}`, `{year}`, `{date}`, `{days}`, `{sign}`, `{percent}`, `{total}`, `{label}`, `{provision}`, `{bills}`, `{frequency}`, `{version}` — keep token names **exactly**.
+- Placeholders: `{name}`, `{count}`, `{month}`, `{amount}`, `{year}`, `{date}`, `{days}`, `{sign}`, `{percent}`, `{total}`, `{paid}`, `{label}`, `{provision}`, `{bills}`, `{frequency}`, `{version}` — keep token names **exactly**.
 - HTML-like tags inside values: `<b>`, `<code>`, `<link>`, `<mail>`, `<apd>`, `<cgu>`, `<privacy>`, `<strong>` — keep tag names **exactly**.
 
 ---
@@ -203,5 +203,6 @@ Compact labels for the charges-list frequency tag (THI-299). The full word above
 | 1.0     | 2026-04-20 | Initial glossary — Wave 1.5 "Opération Babel" translation.                                                        |
 | 1.1     | 2026-04-20 | Destructive confirmations switch to email-as-keyword pattern (§6). Drop SUPPRIMER/DELETE/LÖSCHEN/ELIMINAR.        |
 | 1.2     | 2026-06-01 | Add `common.frequencyAbbr` abbreviation table (§4, THI-299). de-DE quarterly `Vj.`→`Quartl.` (Vorjahr collision). |
+| 1.3     | 2026-07-22 | Add `{paid}` placeholder (§3, commitments stepper « X / N payées », PR #240).                                     |
 
 Any new term, any register change, any account-name update **must** be logged here before landing in messages/\*.json.

messages/de-DE.json

@@ -841,8 +841,6 @@
       "summarySchedule": "{paid}/{total} Raten à {amount} · letzte im {end}",
       "summaryOneOff": "{amount} im {month}",
       "progressAria": "Tilgungsfortschritt von {label}",
-      "markPaidAria": "Rate von {label} als bezahlt markieren",
-      "unmarkPaidAria": "Rate von {label} als zu zahlen markieren",
       "deleteAria": "{label} löschen",
       "toastCreated": "Verpflichtung hinzugefügt",
       "toastDeleted": "Verpflichtung gelöscht",
@@ -852,7 +850,17 @@
         "debt": "Kredit",
         "installmentPlan": "Ratenplan",
         "oneOff": "Einmalige Rechnung"
-      }
+      },
+      "editFormTitle": "Verpflichtung bearbeiten",
+      "saveButton": "Speichern",
+      "saving": "Speichern…",
+      "cancelButton": "Abbrechen",
+      "editAria": "{label} bearbeiten",
+      "markOneAria": "Eine Rate als bezahlt markieren für {label}",
+      "unmarkOneAria": "Letzte bezahlte Rate rückgängig machen für {label}",
+      "installmentsCountAria": "{paid} von {total} Raten bezahlt für {label}",
+      "toastUpdated": "Verpflichtung aktualisiert",
+      "reductionBlocked": "Nicht möglich: {paid} Raten sind bereits markiert. Entferne zuerst Zahlungen."
     },
     "expenses": {
       "title": "Meine Ausgaben",

messages/en.json

@@ -841,8 +841,6 @@
       "summarySchedule": "{paid}/{total} instalments of {amount} · last one in {end}",
       "summaryOneOff": "{amount} in {month}",
       "progressAria": "Repayment progress for {label}",
-      "markPaidAria": "Mark the {label} instalment as paid",
-      "unmarkPaidAria": "Mark the {label} instalment as to pay",
       "deleteAria": "Delete {label}",
       "toastCreated": "Commitment added",
       "toastDeleted": "Commitment deleted",
@@ -852,7 +850,17 @@
         "debt": "Loan",
         "installmentPlan": "Instalment plan",
         "oneOff": "One-off bill"
-      }
+      },
+      "editFormTitle": "Edit commitment",
+      "saveButton": "Save",
+      "saving": "Saving…",
+      "cancelButton": "Cancel",
+      "editAria": "Edit {label}",
+      "markOneAria": "Mark one instalment paid for {label}",
+      "unmarkOneAria": "Undo the last paid instalment for {label}",
+      "installmentsCountAria": "{paid} of {total} instalments paid for {label}",
+      "toastUpdated": "Commitment updated",
+      "reductionBlocked": "Can’t: {paid} instalments are already ticked. Un-tick some payments first."
     },
     "expenses": {
       "title": "My expenses",

messages/es-ES.json

@@ -841,8 +841,6 @@
       "summarySchedule": "{paid}/{total} cuotas de {amount} · última en {end}",
       "summaryOneOff": "{amount} en {month}",
       "progressAria": "Progreso de amortización de {label}",
-      "markPaidAria": "Marcar la cuota de {label} como pagada",
-      "unmarkPaidAria": "Marcar la cuota de {label} como por pagar",
       "deleteAria": "Eliminar {label}",
       "toastCreated": "Compromiso añadido",
       "toastDeleted": "Compromiso eliminado",
@@ -852,7 +850,17 @@
         "debt": "Crédito",
         "installmentPlan": "Plan de pago",
         "oneOff": "Factura puntual"
-      }
+      },
+      "editFormTitle": "Editar compromiso",
+      "saveButton": "Guardar",
+      "saving": "Guardando…",
+      "cancelButton": "Cancelar",
+      "editAria": "Editar {label}",
+      "markOneAria": "Marcar un plazo como pagado para {label}",
+      "unmarkOneAria": "Deshacer el último plazo pagado para {label}",
+      "installmentsCountAria": "{paid} de {total} plazos pagados para {label}",
+      "toastUpdated": "Compromiso actualizado",
+      "reductionBlocked": "No se puede: {paid} plazos ya están marcados. Desmarca algunos pagos primero."
     },
     "expenses": {
       "title": "Mis gastos",

messages/fr-BE.json

@@ -841,8 +841,6 @@
       "summarySchedule": "{paid}/{total} échéances de {amount} · dernière en {end}",
       "summaryOneOff": "{amount} en {month}",
       "progressAria": "Progression du remboursement de {label}",
-      "markPaidAria": "Marquer l'échéance de {label} comme payée",
-      "unmarkPaidAria": "Marquer l'échéance de {label} comme à payer",
       "deleteAria": "Supprimer {label}",
       "toastCreated": "Engagement ajouté",
       "toastDeleted": "Engagement supprimé",
@@ -852,7 +850,17 @@
         "debt": "Crédit",
         "installmentPlan": "Plan de paiement",
         "oneOff": "Facture ponctuelle"
-      }
+      },
+      "editFormTitle": "Modifier l'engagement",
+      "saveButton": "Enregistrer",
+      "saving": "Enregistrement…",
+      "cancelButton": "Annuler",
+      "editAria": "Modifier {label}",
+      "markOneAria": "Marquer une échéance payée pour {label}",
+      "unmarkOneAria": "Annuler la dernière échéance payée pour {label}",
+      "installmentsCountAria": "{paid} sur {total} échéances payées pour {label}",
+      "toastUpdated": "Engagement modifié",
+      "reductionBlocked": "Impossible : {paid} échéances sont déjà validées. Retire d’abord des paiements."
     },
     "expenses": {
       "title": "Mes dépenses",

messages/nl-BE.json

@@ -841,8 +841,6 @@
       "summarySchedule": "{paid}/{total} aflossingen van {amount} · laatste in {end}",
       "summaryOneOff": "{amount} in {month}",
       "progressAria": "Aflossingsvoortgang van {label}",
-      "markPaidAria": "Aflossing van {label} als betaald markeren",
-      "unmarkPaidAria": "Aflossing van {label} als te betalen markeren",
       "deleteAria": "{label} verwijderen",
       "toastCreated": "Verbintenis toegevoegd",
       "toastDeleted": "Verbintenis verwijderd",
@@ -852,7 +850,17 @@
         "debt": "Krediet",
         "installmentPlan": "Afbetalingsplan",
         "oneOff": "Eenmalige factuur"
-      }
+      },
+      "editFormTitle": "Verbintenis bewerken",
+      "saveButton": "Opslaan",
+      "saving": "Opslaan…",
+      "cancelButton": "Annuleren",
+      "editAria": "{label} bewerken",
+      "markOneAria": "Eén termijn als betaald markeren voor {label}",
+      "unmarkOneAria": "Laatste betaalde termijn ongedaan maken voor {label}",
+      "installmentsCountAria": "{paid} van {total} termijnen betaald voor {label}",
+      "toastUpdated": "Verbintenis bijgewerkt",
+      "reductionBlocked": "Niet mogelijk: {paid} termijnen zijn al afgevinkt. Vink eerst betalingen uit."
     },
     "expenses": {
       "title": "Mijn uitgaven",