fix: preserve debug info across snapshot re-fetch + widen refresh filter

- refreshDebug state lives in parent (InstrumentDashboard) so it survives
  fetchSnapshotSilent re-render (ExplanationScore no longer loses debugInfo
  when onRefreshDone triggers setLoading → unmount)
- fetchSnapshotSilent: re-fetches snapshot without setLoading(true) so
  ExplanationScore stays mounted with its state
- Refresh filter now catches rows where prediction_json is empty even if
  actual_json is populated, and handles '[]' / null variants

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/routers/causal_lab.py

@@ -1462,7 +1462,10 @@ def refresh_auto_analyses():
                 "pred_keys":    list(json.loads(pred).keys())   if pred   not in (None, "", "{}", "null") else [],
             })
 
-        rows = [r for r in all_rows if (r["actual_json"] or "") in (None, "", "{}", "null")]
+        _empty = (None, "", "{}", "null", "[]")
+        rows = [r for r in all_rows if
+                (r["actual_json"]     or "") in _empty or
+                (r["prediction_json"] or "") in _empty]
         print(f"[refresh] {len(rows)} analyses with empty actual_json out of {len(all_rows)} total", flush=True)
         conn.close()
 

frontend/src/pages/InstrumentDashboard.tsx

@@ -1014,16 +1014,19 @@ function CausalFrise({
 // ── ExplanationScore ──────────────────────────────────────────────────────────
 
 function ExplanationScore({
-  events, templates, causalInsts, onRefreshDone,
+  events, templates, causalInsts, onRefreshDone, onDebugResult, debugInfo,
 }: {
   events: SnapshotEvent[]
   templates: CausalTemplate[]
   causalInsts: string[]
   onRefreshDone?: () => void
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  onDebugResult?: (data: any) => void
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  debugInfo?: any
 }) {
   const [refreshing, setRefreshing] = useState(false)
   const [refreshDone, setRefreshDone] = useState(false)
-  const [debugInfo, setDebugInfo] = useState<any>(null)
 
   // For each linked event, compute the comprehension score and collect scored ones
   const scored: number[] = []
@@ -1087,17 +1090,17 @@ function ExplanationScore({
     : globalScore >= 70 ? 'bg-emerald-500' : globalScore >= 40 ? 'bg-amber-500' : 'bg-red-500'
 
   const handleRefresh = async () => {
-    setDebugInfo(null)
+    onDebugResult?.(null)
     setRefreshing(true)
     try {
       const res = await api.post('/causal-lab/auto-analyze/refresh')
       const data = res.data
-      setDebugInfo(data)
+      onDebugResult?.(data)
       setRefreshDone(true)
       onRefreshDone?.()
       setTimeout(() => setRefreshDone(false), 8000)
     } catch (err: any) {
-      setDebugInfo({ error: String(err) })
+      onDebugResult?.({ error: String(err) })
     } finally {
       setRefreshing(false)
     }
@@ -1193,6 +1196,7 @@ export default function InstrumentDashboard() {
   const [snapshot, setSnapshot]       = useState<Snapshot | null>(null)
   const [narrative, setNarrative]     = useState('')
   const [loading, setLoading]         = useState(false)
+  const [refreshDebug, setRefreshDebug] = useState<any>(null)
   const [loadingNarr, setLoadingNarr] = useState(false)
   const [selectorOpen, setSelectorOpen] = useState(false)
   const [selectedDate, setSelectedDate] = useState<string | null>(null)
@@ -1226,6 +1230,13 @@ export default function InstrumentDashboard() {
       .finally(() => setLoading(false))
   }, [instrumentId, period])
 
+  // Silent re-fetch (no loading spinner) — used after Recalculer so ExplanationScore keeps its state
+  const fetchSnapshotSilent = useCallback(() => {
+    api.get(`/instruments/${instrumentId}/snapshot?period=${period}`)
+      .then(r => { setSnapshot(r.data) })
+      .catch(() => {})
+  }, [instrumentId, period])
+
   useEffect(() => {
     setSnapshot(null)
     setNarrative('')
@@ -1606,7 +1617,9 @@ export default function InstrumentDashboard() {
                 events={snapshot.events}
                 templates={templates}
                 causalInsts={causalInsts}
-                onRefreshDone={fetchSnapshot}
+                onRefreshDone={fetchSnapshotSilent}
+                onDebugResult={setRefreshDebug}
+                debugInfo={refreshDebug}
               />
             </div>
             )