Fix Info panel - translations, two-step offers flow, icon, add to filter

- Add i18n translations for entities, tabs, and info sections (EN/RU)
- Refactor offers tab to two-step flow (products → offers) for Hub/Supplier
- Replace entity badge with circular icon in header
- Fix "Add to filter" button with name fallback and proper cleanup
- Update selectItem() to clear info param when adding to filter

i18n/locales/ru/catalog.json

@@ -1,5 +1,10 @@
 {
   "catalog": {
+    "entities": {
+      "hub": "Хаб",
+      "supplier": "Поставщик",
+      "offer": "Оффер"
+    },
     "filters": {
       "product": "Товар",
       "supplier": "Поставщик",
@@ -41,6 +46,18 @@
       "offers": "Офферы",
       "map": "Карта"
     },
+    "tabs": {
+      "products": "Товары",
+      "offers": "Офферы",
+      "suppliers": "Поставщики",
+      "hubs": "Хабы",
+      "product": "Товар",
+      "supplier": "Поставщик"
+    },
+    "info": {
+      "selectProductFirst": "Сначала выберите товар",
+      "addToFilter": "Добавить в фильтр"
+    },
     "modes": {
       "explore": "Исследовать",
       "quote": "Найти офферы"