Retire the guardian toggle over a pref nothing reads

The evidence disclosure stopped honouring showEvidenceByDefault in
v1.4.27 and the owner surface retired the control with it — but the
managed-record coach form still offered the switch, silently governing
nothing. Remove the control, the managed-schema pick, the response
field, and the label in all six locales; the strict schema now refuses
the key outright.

messages/de.json

@@ -4719,7 +4719,6 @@
           "last30days": "Letzte 30 Tage",
           "last90days": "Letzte 90 Tage",
           "allTime": "Gesamter Zeitraum",
-          "showEvidence": "Evidenz standardmäßig anzeigen",
           "excludedMetrics": "Ausgeschlossene Messwerte",
           "dataClusters": "Datenbereiche",
           "customClusters": "Eigene Auswahl von Datenbereichen verwenden",

messages/en.json

@@ -4719,7 +4719,6 @@
           "last30days": "Last 30 days",
           "last90days": "Last 90 days",
           "allTime": "All time",
-          "showEvidence": "Show evidence by default",
           "excludedMetrics": "Excluded metrics",
           "dataClusters": "Data clusters",
           "customClusters": "Use a custom cluster selection",

messages/es.json

@@ -4719,7 +4719,6 @@
           "last30days": "Últimos 30 días",
           "last90days": "Últimos 90 días",
           "allTime": "Todo el tiempo",
-          "showEvidence": "Mostrar evidencia de forma predeterminada",
           "excludedMetrics": "Métricas excluidas",
           "dataClusters": "Grupos de datos",
           "customClusters": "Usar una selección personalizada de grupos",

messages/fr.json

@@ -4719,7 +4719,6 @@
           "last30days": "30 derniers jours",
           "last90days": "90 derniers jours",
           "allTime": "Depuis toujours",
-          "showEvidence": "Afficher les sources par défaut",
           "excludedMetrics": "Mesures exclues",
           "dataClusters": "Groupes de données",
           "customClusters": "Utiliser une sélection personnalisée de groupes",

messages/it.json

@@ -4719,7 +4719,6 @@
           "last30days": "Ultimi 30 giorni",
           "last90days": "Ultimi 90 giorni",
           "allTime": "Tutto il periodo",
-          "showEvidence": "Mostra le fonti per impostazione predefinita",
           "excludedMetrics": "Metriche escluse",
           "dataClusters": "Gruppi di dati",
           "customClusters": "Usa una selezione personalizzata di gruppi",

messages/pl.json

@@ -4719,7 +4719,6 @@
           "last30days": "Ostatnie 30 dni",
           "last90days": "Ostatnie 90 dni",
           "allTime": "Cały okres",
-          "showEvidence": "Domyślnie pokazuj źródła",
           "excludedMetrics": "Wykluczone metryki",
           "dataClusters": "Grupy danych",
           "customClusters": "Użyj własnego wyboru grup",

src/__tests__/record-settings-configuration.test.ts

@@ -82,7 +82,6 @@ describe("managed record settings configuration contract", () => {
           tone: "warm",
           verbosity: "default",
           excludeMetrics: [],
-          showEvidenceByDefault: false,
           defaultWindow: "allTime",
         },
       },
@@ -100,6 +99,24 @@ describe("managed record settings configuration contract", () => {
     expect(() => parseManagedRecordSettingsPatch(family, patch)).not.toThrow();
   });
 
+  // Watched red: re-adding `showEvidenceByDefault: true` to the managed
+  // coach pick makes the strict schema accept the key again and this
+  // fails. The evidence disclosure stopped honouring the flag in v1.4.27
+  // (F14); a guardian toggle over a pref nothing reads is a dead control.
+  it("refuses the retired showEvidenceByDefault pref", () => {
+    expect(() =>
+      parseManagedRecordSettingsPatch("coach", {
+        preferences: {
+          tone: "warm",
+          verbosity: "default",
+          excludeMetrics: [],
+          defaultWindow: "allTime",
+          showEvidenceByDefault: true,
+        },
+      }),
+    ).toThrow();
+  });
+
   it("uses the complete canonical module inventory for a fresh record", () => {
     expect(Object.keys(MANAGED_RECORD_SETTINGS_MODULE_DEFAULTS)).toEqual(
       WRITABLE_MODULE_KEYS,

src/app/api/record-settings/[family]/route.ts

@@ -139,7 +139,6 @@ export const GET = apiHandler(
             tone: preferences.tone,
             verbosity: preferences.verbosity,
             excludeMetrics: preferences.excludeMetrics,
-            showEvidenceByDefault: preferences.showEvidenceByDefault,
             defaultWindow: preferences.defaultWindow,
             ...(preferences.dataClusters !== undefined
               ? { dataClusters: preferences.dataClusters }
@@ -344,7 +343,6 @@ export const PATCH = apiHandler(
               tone: preferences.tone,
               verbosity: preferences.verbosity,
               excludeMetrics: preferences.excludeMetrics,
-              showEvidenceByDefault: preferences.showEvidenceByDefault,
               defaultWindow: preferences.defaultWindow,
               ...(preferences.dataClusters !== undefined
                 ? { dataClusters: preferences.dataClusters }

src/components/settings/managed-record-settings-section.tsx

@@ -734,7 +734,6 @@ function CoachSettingsForm({
         excludeMetrics: COACH_EXCLUDE_METRICS.filter(
           (metric) => form.get(`exclude-${metric}`) === "on",
         ),
-        showEvidenceByDefault: form.get("showEvidenceByDefault") === "on",
         defaultWindow: asString(form.get("defaultWindow"), "allTime"),
         ...(form.get("useCustomClusters") === "on"
           ? {
@@ -817,12 +816,6 @@ function CoachSettingsForm({
           </NativeSelect>
         </label>
       </div>
-      <ManagedSwitchRow
-        name="showEvidenceByDefault"
-        label={t("settings.sharedRecord.managedSettings.coach.showEvidence")}
-        defaultChecked={preferences.showEvidenceByDefault === true}
-        disabled={disabled}
-      />
       <fieldset className="space-y-2">
         <legend className="text-sm font-medium">
           {t("settings.sharedRecord.managedSettings.coach.excludedMetrics")}

src/lib/record-settings/configuration.ts

@@ -124,7 +124,6 @@ const managedCoachPreferencesSchema = coachPrefsSchema
     tone: true,
     verbosity: true,
     excludeMetrics: true,
-    showEvidenceByDefault: true,
     defaultWindow: true,
     dataClusters: true,
   })