feat: add desktop storage cleanup controls

apps/desktop-client/src/main/session-registry.ts

@@ -19,6 +19,11 @@ export interface SessionHandleSnapshot {
   partition: string
 }
 
+export interface PersistedSessionPartitionSnapshot {
+  accountId: string
+  partition: string
+}
+
 const registry = new Map<string, SessionHandle>()
 const sessionsWithUA = new WeakSet<Session>()
 let persistedPartitionsCache: Record<string, string> | null = null
@@ -58,6 +63,13 @@ export function getPersistedPartition(accountId: string): string | null {
   return persistedPartitionFor(accountId)
 }
 
+export function listPersistedSessionPartitions(): PersistedSessionPartitionSnapshot[] {
+  return Object.entries(readPersistedPartitions()).map(([accountId, partition]) => ({
+    accountId,
+    partition,
+  }))
+}
+
 function rememberPersistedPartition(accountId: string, partition: string): void {
   const current = readPersistedPartitions()
   if (current[accountId] === partition) {
@@ -83,6 +95,18 @@ function forgetPersistedPartition(accountId: string): string | null {
   return partition
 }
 
+export function forgetPersistedSessionPartition(accountId: string, partition: string): boolean {
+  const current = readPersistedPartitions()
+  if (current[accountId] !== partition) {
+    return false
+  }
+
+  const next = { ...current }
+  delete next[accountId]
+  writePersistedPartitions(next)
+  return true
+}
+
 function partitionFor(accountId: string): string {
   return `persist:acc-${accountId}`
 }