Sync panorama node detail on refresh; scope scenario 4 to the fixture doc

Why: the cockpit refresh reloaded overview and tree but left the node
detail at its old snapshot, so the 刷新对齐 banner persisted after
refreshing (DV-R05 wants every projection to advance). PanoramaNode now
refetches when the overview snapshotRevision advances. Scenario 4 also
scoped its tree clicks to the 验证主体报告 branch — the unscoped first
caret expanded an unrelated rdm-self doc.

Evidence: tsc clean, vitest green, build green (SELF); seven-scenario
rerun to be recorded on the Dev I4 card.

Impact: cockpit panorama + e2e spec.

Refs: rollout I4

src/components/DocumentCockpit.tsx

@@ -197,6 +197,7 @@ export function DocumentCockpit() {
           )}
           {overview && selected && viewMode === 'panorama' && (
             <PanoramaNode pid={pid} selection={selected} overview={overview}
+              snapRev={overview.meta.snapshotRevision}
               childPage={selected.ref.kind === 'document' ? treePages[selected.ref.id] : undefined}
               density={density}
               onClear={() => setSelected(null)}
@@ -290,10 +291,11 @@ function PanoramaHome({ overview, onSelect }: { overview: CockpitOverview; onSel
   )
 }
 
-function PanoramaNode({ pid, selection, overview, childPage, density, onClear, onOpenReader }: {
+function PanoramaNode({ pid, selection, overview, childPage, density, snapRev, onClear, onOpenReader }: {
   pid: string; selection: Selection; overview: CockpitOverview
   childPage?: { items: CockpitTreeNode[]; nextCursor?: string; hasMore: boolean; meta?: CockpitMeta }
   density: Density
+  snapRev: string
   onClear: () => void
   onOpenReader: () => void
 }) {
@@ -314,7 +316,7 @@ function PanoramaNode({ pid, selection, overview, childPage, density, onClear, o
       })
       .catch(e => { if (g === gen.current) setErr(e.message) })
     return () => { gen.current++ }
-  }, [pid, selection.ref.kind, selection.ref.id])
+  }, [pid, selection.ref.kind, selection.ref.id, snapRev])
   const node = (detail?.node || null) as CockpitTreeNode | null
   const title = node?.title || selection.ref.id
   return (