fix: remove .js extensions from monitoring module imports

Next.js webpack build cannot resolve .js extensions for .ts files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/lib/monitoring/alert-evaluator.ts

@@ -7,7 +7,7 @@
  */
 
 import type { Payload } from 'payload'
-import type { AlertCondition, AlertSeverity, SystemMetrics } from './types.js'
+import type { AlertCondition, AlertSeverity, SystemMetrics } from './types'
 
 // ============================================================================
 // Pure Functions

src/lib/monitoring/monitoring-logger.ts

@@ -5,7 +5,7 @@
  * Falls back to console output when Payload is not yet initialized.
  */
 
-import type { LogLevel, LogSource } from './types.js'
+import type { LogLevel, LogSource } from './types'
 
 const LOG_LEVELS: Record<LogLevel, number> = {
   debug: 0,

src/lib/monitoring/monitoring-service.ts

@@ -21,9 +21,9 @@ import type {
   SecurityMetricsStatus,
   PerformanceMetrics,
   SystemMetrics,
-} from './types.js'
+} from './types'
-import { checkSecretsHealth } from '../security/secrets-health.js'
+import { checkSecretsHealth } from '../security/secrets-health'
-import { getSecurityMetricsSnapshot } from '../security/security-observability.js'
+import { getSecurityMetricsSnapshot } from '../security/security-observability'
 
 // ============================================================================
 // System Health

src/lib/monitoring/performance-tracker.ts

@@ -7,7 +7,7 @@
  * error rates, and throughput.
  */
 
-import type { PerformanceEntry, PerformanceMetrics } from './types.js'
+import type { PerformanceEntry, PerformanceMetrics } from './types'
 
 const PERIOD_MS: Record<string, number> = {
   '1h': 3_600_000,

src/lib/monitoring/snapshot-collector.ts

@@ -6,8 +6,8 @@
  * sie in MonitoringSnapshots. Evaluiert dabei Alert-Regeln.
  */
 
-import { collectMetrics } from './monitoring-service.js'
+import { collectMetrics } from './monitoring-service'
-import { AlertEvaluator } from './alert-evaluator.js'
+import { AlertEvaluator } from './alert-evaluator'
 
 let interval: ReturnType<typeof setInterval> | null = null
 const alertEvaluator = new AlertEvaluator()