fix(webui): migrate brand logos to default on

webui/src/lib/local-preferences.ts

@@ -13,6 +13,11 @@ export interface LocalPreferences {
 
 export const LOCAL_PREFS_STORAGE_KEY = "nanobot-webui.settings-preferences";
 export const LOCAL_PREFS_CHANGED_EVENT = "nanobot-webui.local-preferences-changed";
+const LOCAL_PREFS_SCHEMA_VERSION = 1;
+
+type PersistedLocalPreferences = Partial<LocalPreferences> & {
+  schemaVersion?: number;
+};
 
 export const DEFAULT_LOCAL_PREFS: LocalPreferences = {
   density: "comfortable",
@@ -31,12 +36,14 @@ export function readLocalPreferences(): LocalPreferences {
   try {
     const raw = window.localStorage.getItem(LOCAL_PREFS_STORAGE_KEY);
     if (!raw) return DEFAULT_LOCAL_PREFS;
-    const parsed = JSON.parse(raw) as Partial<LocalPreferences>;
+    const parsed = JSON.parse(raw) as PersistedLocalPreferences;
     return {
       density: parsed.density === "compact" ? "compact" : "comfortable",
       activityMode: parsed.activityMode === "expanded" ? "expanded" : "auto",
       codeWrap: parsed.codeWrap !== false,
-      brandLogos: parsed.brandLogos !== false,
+      brandLogos: parsed.schemaVersion === LOCAL_PREFS_SCHEMA_VERSION
+        ? parsed.brandLogos !== false
+        : true,
       browserNotifications: parsed.browserNotifications === true,
       fileEditDisplayMode: normalizeFileEditDisplayMode(parsed.fileEditDisplayMode),
     };
@@ -47,7 +54,10 @@ export function readLocalPreferences(): LocalPreferences {
 
 export function writeLocalPreferences(preferences: LocalPreferences): void {
   try {
-    window.localStorage.setItem(LOCAL_PREFS_STORAGE_KEY, JSON.stringify(preferences));
+    window.localStorage.setItem(LOCAL_PREFS_STORAGE_KEY, JSON.stringify({
+      schemaVersion: LOCAL_PREFS_SCHEMA_VERSION,
+      ...preferences,
+    }));
   } catch {
     // Browser-only preferences should never block settings.
   }

webui/src/tests/local-preferences.test.ts

@@ -10,7 +10,7 @@ import {
 describe("local preferences", () => {
   beforeEach(() => localStorage.clear());
 
-  it("shows third-party brand logos by default while preserving an explicit opt-out", () => {
+  it("enables third-party brand logos by default and migrates the previous default", () => {
     expect(DEFAULT_LOCAL_PREFS.brandLogos).toBe(true);
     expect(readLocalPreferences().brandLogos).toBe(true);
 
@@ -18,6 +18,11 @@ describe("local preferences", () => {
       LOCAL_PREFS_STORAGE_KEY,
       JSON.stringify({ brandLogos: false }),
     );
+    expect(readLocalPreferences().brandLogos).toBe(true);
+  });
+
+  it("preserves a brand logo opt-out after the default-on migration", () => {
+    writeLocalPreferences({ ...DEFAULT_LOCAL_PREFS, brandLogos: false });
     expect(readLocalPreferences().brandLogos).toBe(false);
   });