V27/logging guards

[KevinJump]

Adds IsEnabled checks to all LogInformation, LogDebug and LogTrace calls. in theory this is a performance improvement, because it stops the code doing any string allocations / manipulation that are not needed.

(https://learn.microsoft.com/en-gb/dotnet/fundamentals/code-analysis/quality-rules/ca1873)

(we might move to source-generated logging at a later date)

[Copilot]

Pull request overview

Adds explicit ILogger.IsEnabled(LogLevel.X) guards around many LogDebug/LogTrace/LogInformation calls across uSync Core and BackOffice to avoid unnecessary work when those levels are disabled (per CA1873 guidance).

Changes:

• Wrapped many LogDebug, LogTrace, and LogInformation calls with IsEnabled(...) checks across serializers, handlers, services, and notifications.
• Minor logging behavior adjustments in a few places (some log removals and some log level changes).

Reviewed changes

Copilot reviewed 27 out of 27 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
uSync.Core/Serialization/SyncSerializerRoot.cs	Adds IsEnabled(Debug/Trace) guards around serializer root debug/trace logs; one delete log was removed.
uSync.Core/Serialization/SyncContainerSerializerBase.cs	Guards debug logs in container delete handling and parent discovery flow.
uSync.Core/Serialization/Serializers/TemplateSerializer.cs	Guards debug logs during template import/content resolution and save; contains a log-message typo.
uSync.Core/Serialization/Serializers/LanguageSerializer.cs	Removes an unguarded debug log in second pass.
uSync.Core/Serialization/Serializers/DictionaryItemSerializer.cs	Adds debug guard for “force key sync”; changes key-mismatch log from Information to Warning.
uSync.Core/Serialization/Serializers/DataTypeSerializer.cs	Guards debug logs in delete/config handling; retains a stray “)” in a message.
uSync.Core/Serialization/Serializers/ContentTypeSerializer.cs	Guards debug log for alias cache timing and other debug statements.
uSync.Core/Serialization/Serializers/ContentTypeBaseSerializer.cs	Guards many debug/info logs; retains inconsistent structured logging placeholder {aliaS} and a message typo.
uSync.Core/Serialization/Serializers/ContentSerializerBase.cs	Guards debug/trace logs in content deserialization; changes regex parse log from Debug to Warning.
uSync.Core/Mapping/SyncBlockMapperBase.cs	Guards debug logs for import/export block mapping.
uSync.Core/Mapping/Mappers/ImagePathMapper.cs	Simplifies debug logging for media folder setting (now logs “(Blank)” when empty).
uSync.Core/Documents/SyncDocumentUrlCleaner.cs	Guards debug log when cleaning document URLs.
uSync.Core/DataTypes/DataTypeSerializers/RichTextEditorMigratingSerializer.cs	Guards debug logs during RTE config migration.
uSync.BackOffice/SyncHandlers/SyncHandlerRoot.cs	Guards debug/trace logs during import, clean, and reporting flows.
uSync.BackOffice/SyncHandlers/SyncHandlerFactory.cs	Guards trace log when excluding disabled handlers.
uSync.BackOffice/SyncHandlers/SyncHandlerContainerBase.cs	Guards debug logs when processing container cleanup/changes.
uSync.BackOffice/SyncHandlers/SyncHandlerBase.cs	Guards debug/info logs for clean/delete operations.
uSync.BackOffice/SyncHandlers/Handlers/LanguageHandler.cs	Guards debug logs during language cleanup.
uSync.BackOffice/SyncHandlers/Handlers/ContentHandlerBase.cs	Guards debug logs for include/exclude path/doc-type filtering and cleanup mode.
uSync.BackOffice/Services/SyncService_Single.cs	Guards debug log emitted after partial import.
uSync.BackOffice/Services/SyncService.cs	Guards info logs for startup import/export summaries and trigger actions.
uSync.BackOffice/Services/SyncFileService.cs	Guards debug logs when saving files.
uSync.BackOffice/Services/SyncActionService.cs	Guards info logs for start/finish process reporting.
uSync.BackOffice/Notifications/uSyncApplicationStartingHandler.cs	Guards info logs and switches one interpolated log to structured placeholders.
uSync.BackOffice/Notifications/SyncScopedNotificationPublisher.cs	Guards debug logs around scoped notification publishing.
uSync.BackOffice/Boot/FirstBootMigration.cs	Guards info logs during first-boot import migration.
uSync.AutoTemplates/TemplateWatcher.cs	Guards info log when checking template files.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.