fix(billing): say out loud when a yearly subscription skips recurring charges

The skip is deliberate: a MONTH charge on a yearly subscription would be
raised once a year rather than twelve times, so it is skipped rather than
under-charged. But it returned 0 with nothing logged, so an installed app
expecting to be paid simply never was and nobody could tell.

Moved below the declaration read so it fires only for workspaces actually
running an app that declares a recurring charge, rather than daily for every
yearly-plan workspace, and it can name how many charges were skipped.

Author: FelixMalfait

packages/twenty-server/src/engine/core-modules/billing/app-billing/application-recurring-charge.service.ts

@@ -49,12 +49,6 @@ export class ApplicationRecurringChargeService {
       return 0;
     }
 
-    // A MONTH charge on a yearly subscription would be raised once a year, not
-    // twelve times, so it is skipped rather than silently under-charged.
-    if (currentBillingSubscription.interval !== SubscriptionInterval.Month) {
-      return 0;
-    }
-
     const periodStart = currentBillingSubscription.currentPeriodStart;
 
     const { declaredCharges, rejectedCharges: malformedCharges } =
@@ -68,6 +62,18 @@ export class ApplicationRecurringChargeService {
       return 0;
     }
 
+    // A MONTH charge on a yearly subscription would be raised once a year, not
+    // twelve times, so it is skipped rather than silently under-charged. Only
+    // reached once an app actually declares one, so the workspaces this is said
+    // about are the ones running an app that expects to be paid and is not.
+    if (currentBillingSubscription.interval !== SubscriptionInterval.Month) {
+      this.logger.warn(
+        `Skipping ${declaredCharges.length} recurring app charge(s) for workspace ${workspaceId}: the workspace is on a ${currentBillingSubscription.interval} subscription and only MONTH charges can be raised`,
+      );
+
+      return 0;
+    }
+
     const alreadyChargedKeys =
       await this.usageAnalyticsService.getChargedRecurringKeys({
         workspaceId,