fix: use updateProcessConcurrency to persist slider changes to config.yaml

- CleanerPage now uses updateProcessConcurrency instead of setProcessConcurrency
- This ensures slider changes are persisted to config.yaml via IPC
- Remove unused queryBatchSize and setProcessConcurrency from destructuring

src/preload/index.ts

@@ -12,6 +12,7 @@ import type {
 } from '../main/types/validation.types'
 import type { IpcResult } from '../main/ipc'
 import { IPC_CHANNELS, type LogLevel } from '../shared/ipc-channels'
+import type { CleanerConfig } from '../main/types/config.schema'
 
 type ErpSettingsPayload = {
   erp?: {
@@ -195,6 +196,12 @@ const api = {
     getAll: (): Promise<IpcResult> => invokeIpc(IPC_CHANNELS.USER_ERP_CONFIG_GET_ALL)
   },
 
+  config: {
+    getCleaner: (): Promise<IpcResult<CleanerConfig>> => invokeIpc(IPC_CHANNELS.CONFIG_GET_CLEANER),
+    updateCleaner: (updates: Partial<CleanerConfig>): Promise<IpcResult<CleanerConfig>> =>
+      invokeIpc(IPC_CHANNELS.CONFIG_UPDATE_CLEANER, updates)
+  },
+
   logger: {
     log: (level: LogLevel, message: string, context?: Record<string, unknown>): void => {
       ipcRenderer.send(IPC_CHANNELS.LOGGER_FORWARD, {