Merge branch 'massive-email-notification' into master

# Conflicts:
#	.env.example
#	apps/api/src/app.module.ts

apps/api/src/mail/mail.module.ts

@@ -0,0 +1,12 @@
+import { Module } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
+import { MailService } from "./mail.service";
+
+/** Global so any feature module can inject MailService without re-importing.
+ *  Matches the StorageService pattern: env-driven, null when unconfigured,
+ *  and never blocks API boot. Notifications use it; renewals reuse it. */
+@Module({
+  providers: [{ provide: MailService, useFactory: (c: ConfigService) => new MailService(c) }],
+  exports: [MailService],
+})
+export class MailModule {}