refactor: rename shared package to core (#24309)

packages/app/src/utils/base64.ts

@@ -1,4 +1,4 @@
-import { base64Decode } from "@opencode-ai/shared/util/encode"
+import { base64Decode } from "@opencode-ai/core/util/encode"
 
 export function decode64(value: string | undefined) {
   if (value === undefined) return

packages/app/src/utils/persist.ts

@@ -1,6 +1,6 @@
 import { Platform, usePlatform } from "@/context/platform"
 import { makePersisted, type AsyncStorage, type SyncStorage } from "@solid-primitives/storage"
-import { checksum } from "@opencode-ai/shared/util/encode"
+import { checksum } from "@opencode-ai/core/util/encode"
 import { createResource, type Accessor } from "solid-js"
 import type { SetStoreFunction, Store } from "solid-js/store"