* fix(global-search): surface unreachable nodes and harden the command palette
The command palette discarded the cross-node search hook's failedNodes, so a search run while a fleet node was down silently returned partial results with no sign a host was skipped. It now renders an "N nodes unreachable" line and still shows the stacks it could gather.
The shared cross-node search hook fetched every node's stack list and statuses on every keystroke. It now fans out once per search session and filters the cached inventory client-side as the query is refined, cutting per-keystroke fleet traffic. A 200 response with an unparseable status body degrades stacks to unknown instead of failing the whole node.
The palette now owns result matching (cmdk's built-in fuzzy filter is disabled), so Pages, Nodes, and Stacks match by case-insensitive substring in a deterministic order and the 50-row cap applies to the real match set rather than a re-sorted slice.
Adds unit coverage for the hook and palette, plus a Playwright journey spec.
* fix(global-search): clear stale cross-node results when the active node changes
When excludeNodeId changed mid-search (the sidebar switches it on active-node change), the hook started a fresh fanout but left the previous session's inventory and failedNodes visible until the refetch resolved, so the newly active node could briefly appear under the other-nodes results or a stale unreachable warning could persist. The new session now drops prior results synchronously before refetching.
Anso