feat: add desktop storage cleanup controls

apps/desktop-client/src/preload/bridge.ts

@@ -42,6 +42,7 @@ interface WindowModeRequest {
 interface DesktopAppSettings {
   openAtLogin: boolean
   keepRunningInBackground: boolean
+  autoCleanStorageWeekly: boolean
 }
 
 interface DesktopLoginCredentials {
@@ -49,6 +50,43 @@ interface DesktopLoginCredentials {
   password: string
 }
 
+interface DesktopStorageEntry {
+  id: string
+  label: string
+  kind: 'app-cache' | 'bound-account' | 'unbound-session'
+  partition: string | null
+  accountId: string | null
+  sizeBytes: number
+  cleanableBytes: number
+  lastModifiedAt: number | null
+  cleanable: boolean
+  active: boolean
+}
+
+interface DesktopStorageSnapshot {
+  generatedAt: number
+  totalBytes: number
+  cleanableBytes: number
+  appCacheBytes: number
+  boundAccountBytes: number
+  boundAccountCleanableBytes: number
+  unboundSessionBytes: number
+  unboundSessionCount: number
+  boundAccountCount: number
+  entries: DesktopStorageEntry[]
+  autoCleanStorageWeekly: boolean
+  lastCleanupAt: number | null
+  nextCleanupAt: number | null
+}
+
+interface DesktopStorageCleanupResult {
+  cleanedAt: number
+  cleanedBytes: number
+  removedEntries: number
+  before: DesktopStorageSnapshot
+  after: DesktopStorageSnapshot
+}
+
 interface WorkbenchNavigationState {
   canGoBack: boolean
   canGoForward: boolean
@@ -195,6 +233,10 @@ const desktopBridge = {
       ipcRenderer.invoke('desktop:clear-login-credentials') as Promise<null>,
     setAppSetting: (key: keyof DesktopAppSettings, value: boolean) =>
       ipcRenderer.invoke('desktop:set-app-setting', key, value) as Promise<DesktopAppSettings>,
+    storageSnapshot: () =>
+      ipcRenderer.invoke('desktop:storage-snapshot') as Promise<DesktopStorageSnapshot>,
+    cleanStorage: () =>
+      ipcRenderer.invoke('desktop:clean-storage') as Promise<DesktopStorageCleanupResult>,
     syncRuntimeSession: (session: DesktopRuntimeSessionSyncRequest | null) =>
       ipcRenderer.invoke('desktop:runtime-session-sync', session) as Promise<null>,
     rotateRuntimeClientToken: () =>