feat(logging): Wave 2 - integrate logging throughout application

This commit integrates the logging infrastructure across the entire application:

IPC Layer:
- Add logger-handler.ts with centralized IPC logging channels
- Integrate audit logging into auth, cleaner, extractor handlers
- Add structured logging for IPC operations and data flow

Service Layer:
- Add logger integration to ERP services (extractor, cleaner)
- Integrate logging into excel-parser and user DAO
- Add operation tracking and error logging

Renderer Layer:
- Add useLogger hook for component-level logging
- Update App.tsx with session and user activity logging
- Enable frontend audit trail for critical actions

Testing:
- Add comprehensive IPC logging integration tests
- Enhance unit test coverage for logger and audit-logger
- Add end-to-end logging flow validation

Types:
- Update preload type definitions for logging APIs

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/main/ipc/cleaner-handler.ts

@@ -9,6 +9,7 @@ import { ResultExporter } from '../services/excel/result-exporter'
 import { CleanerReportGenerator } from '../services/report/cleaner-report-generator'
 import { SessionManager } from '../services/user/session-manager'
 import { createLogger } from '../services/logger'
+import { logAudit } from '../services/logger/audit-logger'
 import { withErrorHandling, type IpcResult } from './index'
 import { ErpConnectionError, ValidationError, DatabaseQueryError } from '../types/errors'
 import type {
@@ -230,6 +231,31 @@ export function registerCleanerHandlers(): void {
             errorCount: result.errors.length
           })
 
+          // Audit log: CLEAN (non-blocking)
+          const os = await import('os')
+          const currentUser = SessionManager.getInstance().getUserInfo()
+          if (currentUser) {
+            const status: 'success' | 'failure' | 'partial' =
+              result.errors.length > 0 && result.materialsDeleted > 0
+                ? 'partial'
+                : result.errors.length > 0
+                  ? 'failure'
+                  : 'success'
+            logAudit('CLEAN', String(currentUser.id), {
+              username: currentUser.username,
+              computerName: os.hostname(),
+              resource: 'MATERIAL_PLAN',
+              status,
+              metadata: {
+                orderCount: validOrderNumbers.length,
+                dryRun: input.dryRun ?? false,
+                materialsDeleted: result.materialsDeleted,
+                materialsSkipped: result.materialsSkipped,
+                errorCount: result.errors.length
+              }
+            }).catch((err) => log.warn('Failed to write audit log', { err }))
+          }
+
           // Generate report (silent, user unaware)
           try {
             const endTime = Date.now()