feat(analytics): persist local usage session identities (#18759)

Co-authored-by: Neil <neil@stably.ai>

src/main/opencode-usage/store.ts

@@ -1,3 +1,4 @@
+import { codexOpenCodeTokenSessions } from '../usage/agent-token-usage'
 import { app } from 'electron'
 import { join } from 'node:path'
 import type {
@@ -50,6 +51,10 @@ export class OpenCodeUsageStore extends UsageProviderStoreLifecycle<
 > {
   constructor(store: Pick<Store, 'getRepos' | 'getAllWorktreeMeta'>) {
     super(store, {
+      tokenUsage: {
+        provider: 'opencode',
+        selectSessions: (state) => codexOpenCodeTokenSessions(state.sessions)
+      },
       logTag: '[opencode-usage]',
       resolveCacheFile: getOpenCodeUsageFile,
       createDefaultState: getDefaultState,