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/shared.module.ts

@@ -1,8 +1,14 @@
 import { Global, type MiddlewareConsumer, Module, type NestModule, RequestMethod } from '@nestjs/common';
+import { ConfigModule } from '@nestjs/config';
 import { APP_FILTER } from '@nestjs/core';
 import { EventEmitterModule } from '@nestjs/event-emitter';
-import { makeCounterProvider } from '@willsoto/nestjs-prometheus';
-import { CacheService, CACHE_HIT_TOTAL, CACHE_MISS_TOTAL } from './infrastructure/cache.service';
+import { PrometheusModule, makeCounterProvider } from '@willsoto/nestjs-prometheus';
+import {
+  CacheService,
+  CACHE_HIT_TOTAL,
+  CACHE_MISS_TOTAL,
+  CACHE_DEGRADATION_TOTAL,
+} from './infrastructure/cache.service';
 import { EventBusService } from './infrastructure/event-bus.service';
 import { GlobalExceptionFilter } from './infrastructure/filters/global-exception.filter';
 import { LoggerService } from './infrastructure/logger.service';
@@ -15,7 +21,11 @@ import { RedisService } from './infrastructure/redis.service';
 
 @Global()
 @Module({
-  imports: [EventEmitterModule.forRoot()],
+  imports: [
+    ConfigModule.forRoot({ isGlobal: true }),
+    EventEmitterModule.forRoot(),
+    PrometheusModule.register({ path: '/metrics', defaultMetrics: { enabled: true } }),
+  ],
   providers: [
     PrismaService,
     RedisService,
@@ -32,12 +42,17 @@ import { RedisService } from './infrastructure/redis.service';
       help: 'Total number of cache misses',
       labelNames: ['resource'],
     }),
+    makeCounterProvider({
+      name: CACHE_DEGRADATION_TOTAL,
+      help: 'Total number of cache degradation events',
+      labelNames: ['resource', 'operation'],
+    }),
     {
       provide: APP_FILTER,
       useClass: GlobalExceptionFilter,
     },
   ],
-  exports: [PrismaService, RedisService, CacheService, LoggerService, EventBusService],
+  exports: [PrismaService, RedisService, CacheService, LoggerService, EventBusService, PrometheusModule],
 })
 export class SharedModule implements NestModule {
   configure(consumer: MiddlewareConsumer): void {