fix: widen rents.usd_amount column, add webhook alias, silence cron spam

- Migration to ALTER rents.usd_amount from numeric(5,2) to numeric(15,2)
  which was causing "numeric field overflow" 500 errors when saving
  rental prices >= 1000 sats (e.g. 1200 sats)
- Also widen season_rents.usd_amount for consistency
- Add /webhooks/btcpay route alias (BTCPay was posting to /btcpay but
  the endpoint was /btcpay-webhook, causing 404s on payment callbacks)
- Skip ECS autoscaling cron when TRANSCODING_API_URL is not set
  (eliminates "security token invalid" error spam every minute)
- Reduce payment cron from EVERY_MINUTE to EVERY_10_MINUTES to avoid
  429 rate limiting on the BTC price API
- Bump API CACHEBUST to 10

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/database/migrations/1776300000000-widen-usd-amount-columns.ts

@@ -0,0 +1,34 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * Widen the usd_amount columns in rents and season_rents tables.
+ *
+ * The original migration (1711564180593) created rents.usd_amount as
+ * numeric(5,2), which caps at 999.99. Rental prices are stored in
+ * satoshis (e.g. 1200 sats) and easily exceed 999. The entity definition
+ * specifies precision 15, scale 2 — this migration aligns the database.
+ *
+ * season_rents.usd_amount (created in 1755016652731) has the same
+ * narrow precision and is updated here for consistency.
+ */
+export class WidenUsdAmountColumns1776300000000 implements MigrationInterface {
+  name = 'WidenUsdAmountColumns1776300000000';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `ALTER TABLE "rents" ALTER COLUMN "usd_amount" TYPE numeric(15,2)`,
+    );
+    await queryRunner.query(
+      `ALTER TABLE "season_rents" ALTER COLUMN "usd_amount" TYPE numeric(15,2)`,
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `ALTER TABLE "rents" ALTER COLUMN "usd_amount" TYPE numeric(5,2)`,
+    );
+    await queryRunner.query(
+      `ALTER TABLE "season_rents" ALTER COLUMN "usd_amount" TYPE numeric(5,2)`,
+    );
+  }
+}

backend/src/payment/services/payment.service.ts

@@ -159,7 +159,7 @@ export class PaymentService {
     };
   }
 
-  @Cron(CronExpression.EVERY_MINUTE)
+  @Cron(CronExpression.EVERY_10_MINUTES)
   async handlePaymentsCron() {
     await Promise.all([
       this.handlePayment('watch'),

backend/src/transcoding-server/transcoding-server.service.ts

@@ -102,10 +102,12 @@ export class TranscodingServerService {
     Logger.log(`Auto Scaling group scaled to ${desiredCount} instances`);
   }
 
-  // Run the autoscaling logic every hour
+  // Run the autoscaling logic every hour (AWS ECS only).
+  // Skip when using the local FFmpeg worker (no TRANSCODING_API_URL).
   @Cron(CronExpression.EVERY_MINUTE)
   async autoscaleEcsService() {
     if (process.env.ENVIRONMENT !== 'production') return;
+    if (!process.env.TRANSCODING_API_URL) return;
     try {
       const queueSize = await this.getQueueSize();
       const currentTaskCount = await this.describeService(

backend/src/webhooks/webhooks.controller.ts

@@ -13,6 +13,8 @@ import type { BTCPayWebhookEvent } from 'src/payment/providers/dto/btcpay/btcpay
 export class WebhooksController {
   constructor(private readonly webhooksService: WebhooksService) {}
 
+  // Accept both /webhooks/btcpay-webhook (original) and /webhooks/btcpay
+  // so the webhook works regardless of which URL is configured in BTCPay.
   @Post('btcpay-webhook')
   @UseGuards(BTCPayGuard)
   async btcpayPayment(@Body() body: BTCPayWebhookEvent) {
@@ -22,4 +24,10 @@ export class WebhooksController {
       throw new BadRequestException(error.message);
     }
   }
+
+  @Post('btcpay')
+  @UseGuards(BTCPayGuard)
+  async btcpayPaymentAlias(@Body() body: BTCPayWebhookEvent) {
+    return this.btcpayPayment(body);
+  }
 }