feat(falukant): add improve lover affection feature and localization updates

- Introduced the `improveLoverAffection` method in FalukantService to enhance relationship dynamics by allowing users to boost affection at a cost.
- Updated FalukantController and FalukantRouter to include the new endpoint for improving lover affection.
- Enhanced FamilyView component to provide a button for users to trigger the affection improvement action.
- Added localization entries for the new feature in multiple languages, ensuring clarity in user interactions regarding affection improvements.

frontend/src/i18n/locales/ceb/falukant.json

@@ -831,6 +831,10 @@
                     "maintenanceHigh": "Suporta 75",
                     "maintenanceSuccess": "Na-update ang suporta.",
                     "maintenanceError": "Dili ma-update ang suporta.",
+                    "improveAffection": "Pauswaga ang pagmahal ({cost})",
+                    "improveAffectionHint": "Mopataas sa pagmahal, mogasto og kwarta, ug mopataas usab sa visibility.",
+                    "improveAffectionSuccess": "Napalig-on ang pagmahal ({cost}). Bag-ong bili: pagmahal {affection}, visibility {visibility}, discretion {discretion}.",
+                    "improveAffectionError": "Dili mapaayo ang pagmahal.",
                     "acknowledge": "Iila",
                     "acknowledgeSuccess": "Giila na ang relasyon.",
                     "acknowledgeError": "Dili ma-ila ang relasyon.",

frontend/src/i18n/locales/de/falukant.json

@@ -805,6 +805,10 @@
                     "maintenanceHigh": "Unterhalt 75",
                     "maintenanceSuccess": "Der Unterhalt wurde angepasst.",
                     "maintenanceError": "Der Unterhalt konnte nicht angepasst werden.",
+                    "improveAffection": "Zuneigung steigern ({cost})",
+                    "improveAffectionHint": "Erhöht Zuneigung, kostet Geld und erhöht zugleich Sichtbarkeit.",
+                    "improveAffectionSuccess": "Die Zuneigung wurde gestärkt ({cost}). Neuer Stand: Zuneigung {affection}, Sichtbarkeit {visibility}, Diskretion {discretion}.",
+                    "improveAffectionError": "Die Zuneigung konnte nicht gesteigert werden.",
                     "acknowledge": "Anerkennen",
                     "acknowledgeSuccess": "Die Beziehung wurde offiziell anerkannt.",
                     "acknowledgeError": "Die Beziehung konnte nicht anerkannt werden.",

frontend/src/i18n/locales/en/falukant.json

@@ -942,6 +942,10 @@
                     "maintenanceHigh": "Maintenance 75",
                     "maintenanceSuccess": "Maintenance has been updated.",
                     "maintenanceError": "Maintenance could not be updated.",
+                    "improveAffection": "Boost affection ({cost})",
+                    "improveAffectionHint": "Raises affection, costs money, and also increases visibility.",
+                    "improveAffectionSuccess": "Affection has been strengthened ({cost}). New values: affection {affection}, visibility {visibility}, discretion {discretion}.",
+                    "improveAffectionError": "Affection could not be improved.",
                     "acknowledge": "Acknowledge",
                     "acknowledgeSuccess": "The relationship has been officially acknowledged.",
                     "acknowledgeError": "The relationship could not be acknowledged.",

frontend/src/i18n/locales/es/falukant.json

@@ -796,6 +796,10 @@
                     "maintenanceHigh": "Mantenimiento 75",
                     "maintenanceSuccess": "Se ha ajustado el mantenimiento.",
                     "maintenanceError": "No se pudo ajustar el mantenimiento.",
+                    "improveAffection": "Mejorar afecto ({cost})",
+                    "improveAffectionHint": "Aumenta el afecto, cuesta dinero y también sube la visibilidad.",
+                    "improveAffectionSuccess": "El afecto ha mejorado ({cost}). Nuevos valores: afecto {affection}, visibilidad {visibility}, discreción {discretion}.",
+                    "improveAffectionError": "No se pudo mejorar el afecto.",
                     "acknowledge": "Reconocer",
                     "acknowledgeSuccess": "La relación ha sido reconocida oficialmente.",
                     "acknowledgeError": "No se pudo reconocer la relación.",

frontend/src/i18n/locales/fr/falukant.json

@@ -794,6 +794,10 @@
                     "maintenanceHigh": "Entretien 75",
                     "maintenanceSuccess": "L'entretien a été ajusté.",
                     "maintenanceError": "La maintenance n'a pas pu être ajustée.",
+                    "improveAffection": "Renforcer l’affection ({cost})",
+                    "improveAffectionHint": "Augmente l’affection, coûte de l’argent et augmente aussi la visibilité.",
+                    "improveAffectionSuccess": "L’affection a été renforcée ({cost}). Nouvelles valeurs : affection {affection}, visibilité {visibility}, discrétion {discretion}.",
+                    "improveAffectionError": "L’affection n’a pas pu être améliorée.",
                     "acknowledge": "Reconnaître",
                     "acknowledgeSuccess": "La relation a été officiellement reconnue.",
                     "acknowledgeError": "La relation n'a pas pu être reconnue.",

frontend/src/views/falukant/FamilyView.vue

@@ -437,6 +437,13 @@
                             <button class="button button--secondary" @click="setLoverMaintenance(lover, 75)">
                                 {{ $t('falukant.family.lovers.actions.maintenanceHigh') }}
                             </button>
+                            <button
+                                class="button button--secondary"
+                                @click="improveLoverAffection(lover)"
+                                :title="$t('falukant.family.lovers.actions.improveAffectionHint', { cost: formatCost(loverAffectionActionCost) })"
+                            >
+                                {{ $t('falukant.family.lovers.actions.improveAffection', { cost: formatCost(loverAffectionActionCost) }) }}
+                            </button>
                             <button
                                 v-if="!lover.acknowledged"
                                 class="button button--secondary"
@@ -504,6 +511,7 @@ const MARRIAGE_GIFT_COSTS = {
     decent: 80,
     lavish: 180
 }
+const LOVER_AFFECTION_ACTION_COST = 60
 
 export default {
     name: 'FamilyView',
@@ -548,6 +556,9 @@ export default {
         marriageGiftCosts() {
             return MARRIAGE_GIFT_COSTS;
         },
+        loverAffectionActionCost() {
+            return LOVER_AFFECTION_ACTION_COST;
+        },
         partnerSummaryLine() {
             if (this.relationships?.length > 0) {
                 const r = this.relationships[0];
@@ -847,6 +858,25 @@ export default {
             }
         },
 
+        async improveLoverAffection(lover) {
+            try {
+                const { data } = await apiClient.post(`/api/falukant/family/lover/${lover.relationshipId}/improve-affection`);
+                await this.loadFamilyData();
+                showSuccess(
+                    this,
+                    this.$t('falukant.family.lovers.actions.improveAffectionSuccess', {
+                        cost: this.formatCost(data?.cost ?? this.loverAffectionActionCost),
+                        affection: data?.affection ?? '—',
+                        visibility: data?.visibility ?? '—',
+                        discretion: data?.discretion ?? '—',
+                    })
+                );
+            } catch (error) {
+                console.error('Error improving lover affection:', error);
+                showError(this, this.$t('falukant.family.lovers.actions.improveAffectionError'));
+            }
+        },
+
         async endLoverRelationship(lover) {
             const confirmed = await confirmAction(this, {
                 title: this.$t('falukant.family.lovers.actions.end'),