refactor: migrate to eslint flat config and format codebase with prettier

- Remove legacy .eslintrc.cjs and .eslintignore
- Add eslint.config.js with flat config, security rules (no-eval, no-implied-eval, no-new-func, no-script-url)
- Add .prettierrc and .prettierignore
- Format entire codebase with prettier

src/api/promo.ts

@@ -1,96 +1,97 @@
-import apiClient from './client'
+import apiClient from './client';
 
 export interface PromoOffer {
-  id: number
-  notification_type: string
-  discount_percent: number | null
-  effect_type: string
-  expires_at: string
-  is_active: boolean
-  is_claimed: boolean
-  claimed_at: string | null
-  extra_data: Record<string, any> | null
+  id: number;
+  notification_type: string;
+  discount_percent: number | null;
+  effect_type: string;
+  expires_at: string;
+  is_active: boolean;
+  is_claimed: boolean;
+  claimed_at: string | null;
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  extra_data: Record<string, any> | null;
 }
 
 export interface ActiveDiscount {
-  discount_percent: number
-  source: string | null
-  expires_at: string | null
-  is_active: boolean
+  discount_percent: number;
+  source: string | null;
+  expires_at: string | null;
+  is_active: boolean;
 }
 
 export interface PromoGroupDiscounts {
-  group_name: string | null
-  server_discount_percent: number
-  traffic_discount_percent: number
-  device_discount_percent: number
-  period_discounts: Record<string, number>
+  group_name: string | null;
+  server_discount_percent: number;
+  traffic_discount_percent: number;
+  device_discount_percent: number;
+  period_discounts: Record<string, number>;
 }
 
 export interface ClaimOfferResponse {
-  success: boolean
-  message: string
-  discount_percent: number | null
-  expires_at: string | null
+  success: boolean;
+  message: string;
+  discount_percent: number | null;
+  expires_at: string | null;
 }
 
 export interface LoyaltyTierInfo {
-  id: number
-  name: string
-  threshold_rubles: number
-  server_discount_percent: number
-  traffic_discount_percent: number
-  device_discount_percent: number
-  period_discounts: Record<string, number>
-  is_current: boolean
-  is_achieved: boolean
+  id: number;
+  name: string;
+  threshold_rubles: number;
+  server_discount_percent: number;
+  traffic_discount_percent: number;
+  device_discount_percent: number;
+  period_discounts: Record<string, number>;
+  is_current: boolean;
+  is_achieved: boolean;
 }
 
 export interface LoyaltyTiersResponse {
-  tiers: LoyaltyTierInfo[]
-  current_spent_rubles: number
-  current_tier_name: string | null
-  next_tier_name: string | null
-  next_tier_threshold_rubles: number | null
-  progress_percent: number
+  tiers: LoyaltyTierInfo[];
+  current_spent_rubles: number;
+  current_tier_name: string | null;
+  next_tier_name: string | null;
+  next_tier_threshold_rubles: number | null;
+  progress_percent: number;
 }
 
 export const promoApi = {
   // Get available promo offers
   getOffers: async (): Promise<PromoOffer[]> => {
-    const response = await apiClient.get<PromoOffer[]>('/cabinet/promo/offers')
-    return response.data
+    const response = await apiClient.get<PromoOffer[]>('/cabinet/promo/offers');
+    return response.data;
   },
 
   // Get active discount
   getActiveDiscount: async (): Promise<ActiveDiscount> => {
-    const response = await apiClient.get<ActiveDiscount>('/cabinet/promo/active-discount')
-    return response.data
+    const response = await apiClient.get<ActiveDiscount>('/cabinet/promo/active-discount');
+    return response.data;
   },
 
   // Get promo group discounts
   getGroupDiscounts: async (): Promise<PromoGroupDiscounts> => {
-    const response = await apiClient.get<PromoGroupDiscounts>('/cabinet/promo/group-discounts')
-    return response.data
+    const response = await apiClient.get<PromoGroupDiscounts>('/cabinet/promo/group-discounts');
+    return response.data;
   },
 
   // Get loyalty tiers (promo groups with spending thresholds)
   getLoyaltyTiers: async (): Promise<LoyaltyTiersResponse> => {
-    const response = await apiClient.get<LoyaltyTiersResponse>('/cabinet/promo/loyalty-tiers')
-    return response.data
+    const response = await apiClient.get<LoyaltyTiersResponse>('/cabinet/promo/loyalty-tiers');
+    return response.data;
   },
 
   // Claim a promo offer
   claimOffer: async (offerId: number): Promise<ClaimOfferResponse> => {
     const response = await apiClient.post<ClaimOfferResponse>('/cabinet/promo/claim', {
       offer_id: offerId,
-    })
-    return response.data
+    });
+    return response.data;
   },
 
   // Clear active discount
   clearActiveDiscount: async (): Promise<{ message: string }> => {
-    const response = await apiClient.delete<{ message: string }>('/cabinet/promo/active-discount')
-    return response.data
+    const response = await apiClient.delete<{ message: string }>('/cabinet/promo/active-discount');
+    return response.data;
   },
-}
+};