fix(logger): batch fix audit-logger, circular meta, and sync callers

- Make logAudit and closeAuditLogger synchronous (were async for no reason)
- Set audit-logger silent:true initially, enable on applyAuditConfig()
- Add try-catch for circular references in consoleFormat meta JSON
- Update all callers to remove unnecessary await/.catch() on sync functions
- Add comment to shared.ts explaining acceptable sync FS usage
- Fix audit-logger test for sync closeAuditLogger

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

src/main/services/cleaner/cleaner-application-service.ts

@@ -274,7 +274,7 @@ export class CleanerApplicationService {
           ? 'failure'
           : 'success'
 
-    await logAudit('CLEAN', String(currentUser.id), {
+    logAudit('CLEAN', String(currentUser.id), {
       username: currentUser.username,
       computerName: (await import('os')).hostname(),
       resource: 'MATERIAL_PLAN',
@@ -288,7 +288,7 @@ export class CleanerApplicationService {
         materialsSkipped: result.materialsSkipped,
         errorCount: result.errors.length
       }
-    }).catch((err) => log.warn('Failed to write audit log', { err }))
+    })
   }
 
   private async generateAndUploadReport(