Add curator roles/permissions with Users admin, and fix lineage branch joins.

Staff accounts use admin/curator roles and fine-grained flags; transitions connect source-to-target with color gradients and stream cutout masks so overlaps stay seamless.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/i18n/index.ts

@@ -13,6 +13,7 @@ import enDebug from '../locales/en/debug.json';
 import enTranslations from '../locales/en/translations.json';
 import enInfluences from '../locales/en/influences.json';
 import enTours from '../locales/en/tours.json';
+import enUsers from '../locales/en/users.json';
 
 import ruCommon from '../locales/ru/common.json';
 import ruHome from '../locales/ru/home.json';
@@ -25,6 +26,7 @@ import ruDebug from '../locales/ru/debug.json';
 import ruTranslations from '../locales/ru/translations.json';
 import ruInfluences from '../locales/ru/influences.json';
 import ruTours from '../locales/ru/tours.json';
+import ruUsers from '../locales/ru/users.json';
 
 const initialLocale = readStoredLocale();
 writeStoredLocale(initialLocale);
@@ -33,7 +35,7 @@ void i18n.use(initReactI18next).init({
   lng: initialLocale,
   fallbackLng: 'en',
   supportedLngs: ['en', 'ru'],
-  ns: ['common', 'home', 'search', 'gallery', 'painting', 'bio', 'annotations', 'debug', 'translations', 'influences', 'tours'],
+  ns: ['common', 'home', 'search', 'gallery', 'painting', 'bio', 'annotations', 'debug', 'translations', 'influences', 'tours', 'users'],
   defaultNS: 'common',
   resources: {
     en: {
@@ -48,6 +50,7 @@ void i18n.use(initReactI18next).init({
       translations: enTranslations,
       influences: enInfluences,
       tours: enTours,
+      users: enUsers,
     },
     ru: {
       common: ruCommon,
@@ -61,6 +64,7 @@ void i18n.use(initReactI18next).init({
       translations: ruTranslations,
       influences: ruInfluences,
       tours: ruTours,
+      users: ruUsers,
     },
   },
   interpolation: { escapeValue: false },