refactor(desktop): consolidate desktop-electron into desktop package (#25822)

packages/desktop/src/main/store.ts

@@ -0,0 +1,17 @@
+import Store from "electron-store"
+
+import { SETTINGS_STORE } from "./constants"
+
+const cache = new Map<string, Store>()
+
+// We cannot instantiate the electron-store at module load time because
+// module import hoisting causes this to run before app.setPath("userData", ...)
+// in index.ts has executed, which would result in files being written to the default directory
+// (e.g. bad: %APPDATA%\@opencode-ai\desktop\opencode.settings vs good: %APPDATA%\ai.opencode.desktop.dev\opencode.settings).
+export function getStore(name = SETTINGS_STORE) {
+  const cached = cache.get(name)
+  if (cached) return cached
+  const next = new Store({ name, fileExtension: "", accessPropertiesByDotNotation: false })
+  cache.set(name, next)
+  return next
+}