Fix settings toggles layout and add processing-log retention controls

frontend/src/types.ts

@@ -176,6 +176,14 @@ export interface DisplaySettings {
   log_typing_animation_enabled: boolean;
 }
 
+/**
+ * Represents retention targets used when trimming persisted processing logs.
+ */
+export interface ProcessingLogRetentionSettings {
+  keep_document_sessions: number;
+  keep_unbound_entries: number;
+}
+
 /**
  * Represents one predefined logical path and discoverability scope.
  */
@@ -220,6 +228,7 @@ export interface TaskSettings {
 export interface AppSettings {
   upload_defaults: UploadDefaultsSettings;
   display: DisplaySettings;
+  processing_log_retention: ProcessingLogRetentionSettings;
   handwriting_style_clustering: HandwritingStyleClusteringSettings;
   predefined_paths: PredefinedPathEntry[];
   predefined_tags: PredefinedTagEntry[];
@@ -265,6 +274,14 @@ export interface DisplaySettingsUpdate {
   log_typing_animation_enabled?: boolean;
 }
 
+/**
+ * Represents processing-log retention update payload.
+ */
+export interface ProcessingLogRetentionSettingsUpdate {
+  keep_document_sessions?: number;
+  keep_unbound_entries?: number;
+}
+
 /**
  * Represents handwriting-style clustering settings update payload.
  */
@@ -284,6 +301,7 @@ export interface HandwritingStyleClusteringSettingsUpdate {
 export interface AppSettingsUpdate {
   upload_defaults?: UploadDefaultsSettingsUpdate;
   display?: DisplaySettingsUpdate;
+  processing_log_retention?: ProcessingLogRetentionSettingsUpdate;
   handwriting_style_clustering?: HandwritingStyleClusteringSettingsUpdate;
   predefined_paths?: PredefinedPathEntry[];
   predefined_tags?: PredefinedTagEntry[];