fix(lint): enforce consistent-type-imports and fix import ordering across codebase

Auto-fix 862 lint errors: convert value imports used only as types to
`import type`, fix import group ordering in seed.ts and du-an-api.ts,
remove unused imports in auth controller, and clean up stale eslint-disable
comments referencing non-existent rules.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/shared/infrastructure/cache.service.ts

@@ -1,4 +1,4 @@
-import { Injectable, OnModuleInit } from '@nestjs/common';
+import { Injectable, type OnModuleInit } from '@nestjs/common';
 import { InjectMetric } from '@willsoto/nestjs-prometheus';
 // eslint-disable-next-line @typescript-eslint/consistent-type-imports -- NestJS DI requires value imports for emitDecoratorMetadata
 import { Counter } from 'prom-client';