fix(sync): show complete workspace and agent history (#2263)

Cached focused state was leaking into the sidebar before authoritative workspace hydration, while catch-up limits counted raw events instead of projected entries. Keep the focused cache fast, gate directory presentation on hydration, and preserve canonical cursors while paging projected history.

packages/app/src/hooks/use-sidebar-workspaces-list.ts

@@ -1,7 +1,6 @@
 import { useCallback, useEffect, useMemo } from "react";
-import { shallow } from "zustand/shallow";
-import { useStoreWithEqualityFn } from "zustand/traditional";
 import { useSessionStore, type WorkspaceDescriptor } from "@/stores/session-store";
+import { useHydratedWorkspaceServerIds } from "@/stores/session-store-hooks";
 import { useHostProjects } from "@/projects/host-projects";
 import { fetchAllWorkspaceDescriptors } from "@/projects/workspace-fetching";
 import { getHostRuntimeStore, useHostRegistryLoaded, useHosts } from "@/runtime/host-runtime";
@@ -89,13 +88,9 @@ export function useSidebarWorkspacesList(options?: {
 
   const persistedProjectOrder = useSidebarOrderStore((state) => state.projectOrder ?? EMPTY_ORDER);
 
-  const hydratedServerIds = useStoreWithEqualityFn(
-    useSessionStore,
-    (state) => serverIds.filter((id) => state.sessions[id]?.hasHydratedWorkspaces ?? false),
-    shallow,
-  );
+  const hydratedServerIds = useHydratedWorkspaceServerIds(serverIds);
 
-  const hostProjects = useHostProjects(serverIds);
+  const hostProjects = useHostProjects(hydratedServerIds);
 
   const sidebarModel = useMemo(
     () =>