fix(bus): acquire PubSub subscription eagerly to close /event race (#27959)

packages/opencode/src/project/project.ts

@@ -425,7 +425,7 @@ export const layer: Layer.Layer<
 
     const initState = yield* InstanceState.make(
       Effect.fn("Project.initState")(function* (ctx) {
-        yield* bus.subscribe(Command.Event.Executed).pipe(
+        yield* (yield* bus.subscribe(Command.Event.Executed)).pipe(
           Stream.runForEach((payload) =>
             payload.properties.name === Command.Default.INIT ? setInitialized(ctx.project.id) : Effect.void,
           ),

packages/opencode/src/project/vcs.ts

@@ -298,7 +298,7 @@ export const layer: Layer.Layer<Service, never, Git.Service | Bus.Service> = Lay
         const value = { current, root }
         log.info("initialized", { branch: value.current, default_branch: value.root?.name })
 
-        yield* bus.subscribe(FileWatcher.Event.Updated).pipe(
+        yield* (yield* bus.subscribe(FileWatcher.Event.Updated)).pipe(
           Stream.filter((evt) => evt.properties.file.endsWith("HEAD")),
           Stream.runForEach((_evt) =>
             Effect.gen(function* () {