feat(core): initial implementation of syncing (#17814)

packages/opencode/src/sync/schema.ts

@@ -0,0 +1,14 @@
+import { Schema } from "effect"
+import z from "zod"
+
+import { Identifier } from "@/id/id"
+import { withStatics } from "@/util/schema"
+
+export const EventID = Schema.String.pipe(
+  Schema.brand("EventID"),
+  withStatics((s) => ({
+    make: (id: string) => s.makeUnsafe(id),
+    ascending: (id?: string) => s.makeUnsafe(Identifier.ascending("event", id)),
+    zod: Identifier.schema("event").pipe(z.custom<Schema.Schema.Type<typeof s>>()),
+  })),
+)