fix: production readiness — resolve build, lint, and code quality issues

- Fix Next.js build failure: remove duplicate route at (dashboard)/listings/[id]
  that conflicted with (public)/listings/[id] (same URL path in two route groups)
- Fix 772 ESLint errors: auto-fix import ordering (import-x/order), remove unused
  imports/variables, convert empty interfaces to type aliases, replace require()
  with ESM imports, fix consistent-type-imports violations
- Add CLAUDE.md for developer onboarding documentation
- All checks pass: 0 lint errors, typecheck clean, 230 tests passing, build success

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

apps/api/src/modules/shared/infrastructure/__tests__/global-exception.filter.spec.ts

@@ -3,7 +3,7 @@ import { describe, expect, it, vi } from 'vitest';
 import { DomainException } from '../../domain/domain-exception';
 import { ErrorCode } from '../../domain/error-codes';
 import { GlobalExceptionFilter } from '../filters/global-exception.filter';
-import { LoggerService } from '../logger.service';
+import { type LoggerService } from '../logger.service';
 
 function createMockHost(correlationId?: string) {
   const json = vi.fn();

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

@@ -1,8 +1,8 @@
-import { Injectable, Inject, type OnModuleInit } from '@nestjs/common';
+import { Injectable, type OnModuleInit } from '@nestjs/common';
 import { InjectMetric } from '@willsoto/nestjs-prometheus';
-import { Counter } from 'prom-client';
-import { RedisService } from './redis.service';
-import { LoggerService } from './logger.service';
+import { type Counter } from 'prom-client';
+import { type LoggerService } from './logger.service';
+import { type RedisService } from './redis.service';
 
 export const CACHE_HIT_TOTAL = 'cache_hit_total';
 export const CACHE_MISS_TOTAL = 'cache_miss_total';

apps/api/src/modules/shared/infrastructure/event-bus.service.ts

@@ -1,5 +1,5 @@
 import { Injectable } from '@nestjs/common';
-import { EventEmitter2 } from '@nestjs/event-emitter';
+import { type EventEmitter2 } from '@nestjs/event-emitter';
 import { type DomainEvent } from '../domain/domain-event';
 
 @Injectable()

apps/api/src/modules/shared/infrastructure/filters/global-exception.filter.ts

@@ -8,7 +8,7 @@ import {
 import type { Request, Response } from 'express';
 import { DomainException, type ErrorResponseBody } from '../../domain/domain-exception';
 import { ErrorCode } from '../../domain/error-codes';
-import { LoggerService } from '../logger.service';
+import { type LoggerService } from '../logger.service';
 
 @Catch()
 export class GlobalExceptionFilter implements ExceptionFilter {

apps/api/src/modules/shared/infrastructure/middleware/correlation-id.middleware.ts

@@ -1,5 +1,5 @@
-import { Injectable, type NestMiddleware } from '@nestjs/common';
 import { randomUUID } from 'node:crypto';
+import { Injectable, type NestMiddleware } from '@nestjs/common';
 import type { NextFunction, Request, Response } from 'express';
 
 const CORRELATION_ID_HEADER = 'x-correlation-id';

apps/api/src/modules/shared/infrastructure/middleware/csrf.middleware.ts

@@ -1,5 +1,5 @@
-import { ForbiddenException, Injectable, type NestMiddleware } from '@nestjs/common';
 import { randomBytes } from 'node:crypto';
+import { ForbiddenException, Injectable, type NestMiddleware } from '@nestjs/common';
 import type { NextFunction, Request, Response } from 'express';
 
 const CSRF_COOKIE = 'XSRF-TOKEN';

apps/api/src/modules/shared/infrastructure/middleware/request-logging.middleware.ts

@@ -1,6 +1,6 @@
 import { Injectable, type NestMiddleware } from '@nestjs/common';
 import type { NextFunction, Request, Response } from 'express';
-import { LoggerService } from '../logger.service';
+import { type LoggerService } from '../logger.service';
 
 @Injectable()
 export class RequestLoggingMiddleware implements NestMiddleware {