Merge upstream/master into develop

Sync upstream changes from perfect-panel/server

  Includes updates from v1.0.1 to v1.2.5:
  - Currency configuration support
  - Subscribe improvements (short token, inventory check, etc.)
  - Node management enhancements
  - Database migrations
  - Bug fixes and optimizations

initialize/migrate/database/02125_subscribe_stock.up.sql

@@ -0,0 +1,4 @@
+-- Update the `subscribe` table to set `inventory` to -1 where it is currently 0
+UPDATE `subscribe`
+SET `inventory` = -1
+WHERE `inventory` = 0;