feat(labs): surface low-confidence OCR rows in review

The extraction already self-scores each field; the review screen only
hinted at a shaky numeric value. Add a calm per-row low-confidence badge
when any tracked field scores below the threshold, including qualitative
rows that had no confidence cue. Informative secondary badge, no alarm
colour.

messages/de.json

@@ -6725,6 +6725,7 @@
       "linksExisting": "Verknüpft mit vorhandenem {name}",
       "duplicateWarning": "Ein passender Wert existiert bereits",
       "lowConfidence": "Bitte diesen Wert überprüfen",
+      "lowConfidenceBadge": "Geringe Sicherheit",
       "valueUnreadable": "Wert unleserlich — bitte manuell eingeben",
       "saveSelected": "{count} ausgewählte speichern",
       "discardAll": "Alle verwerfen",

messages/en.json

@@ -6725,6 +6725,7 @@
       "linksExisting": "Links to existing {name}",
       "duplicateWarning": "A matching reading already exists",
       "lowConfidence": "Please double-check this value",
+      "lowConfidenceBadge": "Low confidence",
       "valueUnreadable": "Value unreadable — enter it manually",
       "saveSelected": "Save {count} selected",
       "discardAll": "Discard all",

messages/es.json

@@ -6725,6 +6725,7 @@
       "linksExisting": "Se vincula a {name} existente",
       "duplicateWarning": "Ya existe un valor coincidente",
       "lowConfidence": "Verifica este valor",
+      "lowConfidenceBadge": "Confianza baja",
       "valueUnreadable": "Valor ilegible — introdúcelo manualmente",
       "saveSelected": "Guardar {count} seleccionados",
       "discardAll": "Descartar todo",

messages/fr.json

@@ -6725,6 +6725,7 @@
       "linksExisting": "Lié au {name} existant",
       "duplicateWarning": "Une valeur correspondante existe déjà",
       "lowConfidence": "Veuillez vérifier cette valeur",
+      "lowConfidenceBadge": "Confiance faible",
       "valueUnreadable": "Valeur illisible — saisissez-la manuellement",
       "saveSelected": "Enregistrer {count} sélectionnées",
       "discardAll": "Tout abandonner",

messages/it.json

@@ -6725,6 +6725,7 @@
       "linksExisting": "Collegato a {name} esistente",
       "duplicateWarning": "Esiste già un valore corrispondente",
       "lowConfidence": "Controlla questo valore",
+      "lowConfidenceBadge": "Bassa attendibilità",
       "valueUnreadable": "Valore illeggibile — inseriscilo manualmente",
       "saveSelected": "Salva {count} selezionati",
       "discardAll": "Scarta tutto",

messages/pl.json

@@ -6725,6 +6725,7 @@
       "linksExisting": "Łączy z istniejącym {name}",
       "duplicateWarning": "Pasujący wynik już istnieje",
       "lowConfidence": "Sprawdź tę wartość",
+      "lowConfidenceBadge": "Niska pewność",
       "valueUnreadable": "Wartość nieczytelna — wprowadź ją ręcznie",
       "saveSelected": "Zapisz {count} wybranych",
       "discardAll": "Odrzuć wszystko",

src/components/labs/ocr-row-editor.tsx

@@ -49,6 +49,17 @@ export function OcrRowEditor({
     !isQualitative && row.confidence.value < CONFIDENCE_THRESHOLD;
   const valueUnreadable = !isQualitative && row.value === null;
 
+  // The model self-scores each field it transcribed. Surface a single calm
+  // per-row flag when ANY tracked field came back below the threshold so a
+  // shaky read is visible at a glance — including on qualitative rows, which
+  // have no value-confidence footnote of their own. Informative, not alarming.
+  const lowRowConfidence =
+    row.confidence.analyte < CONFIDENCE_THRESHOLD ||
+    row.confidence.unit < CONFIDENCE_THRESHOLD ||
+    (isQualitative
+      ? row.confidence.value < CONFIDENCE_THRESHOLD
+      : lowValueConfidence);
+
   // v1.18.10 (#5) — a NEW numeric biomarker mints its catalog reference range
   // from THIS extracted row. The range is therefore load-bearing and worth a
   // second look. Surface the range confidence prominently for new numeric
@@ -106,6 +117,12 @@ export function OcrRowEditor({
                 {t("labs.ocr.duplicateWarning")}
               </Badge>
             ) : null}
+            {lowRowConfidence ? (
+              <Badge variant="secondary" className="text-muted-foreground">
+                <AlertCircle aria-hidden />
+                {t("labs.ocr.lowConfidenceBadge")}
+              </Badge>
+            ) : null}
           </div>
         </div>
       </div>