fix: apply consistent-type-imports across API codebase (728 lint errors)

- Convert `import type { X }` to `import { type X }` (inline-type-imports style)
- Suppress consistent-type-imports for `typeof import()` in instrument.ts
- Includes uncommitted agent work: metrics module, redis caching, audit logs,
  saved searches, circuit breaker, rate limiting, and admin enhancements

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

apps/api/src/modules/shared/infrastructure/index.ts

@@ -1,4 +1,5 @@
 export { Cacheable, type CacheableOptions } from './decorators/cacheable.decorator';
+export { CircuitBreaker, CircuitOpenError, CircuitState, type CircuitBreakerOptions } from './circuit-breaker';
 export { PrismaService } from './prisma.service';
 export { RedisService } from './redis.service';
 export { CacheService, CachePrefix, CacheTTL } from './cache.service';
@@ -11,6 +12,14 @@ export { SanitizeInputMiddleware } from './middleware/sanitize-input.middleware'
 export { CsrfMiddleware } from './middleware/csrf.middleware';
 export { maskPii } from './pii-masker';
 export { ThrottlerBehindProxyGuard } from './guards/throttler-behind-proxy.guard';
+export {
+  UserRateLimitGuard,
+  DEFAULT_ROLE_LIMITS,
+  DEFAULT_WINDOW_SECONDS,
+  USER_RATE_LIMIT_KEY,
+  type UserRateLimitOptions,
+} from './guards/user-rate-limit.guard';
+export { UserRateLimit } from './decorators/user-rate-limit.decorator';
 export { FileValidationPipe } from './pipes/file-validation.pipe';
 export type { FileValidationOptions, UploadedFile } from './pipes/file-validation.pipe';
 export { validateEnv, validateJwtSecret } from './env-validation';