fix(api): align API layer with backend response formats

- wallet: parse {balance: string} response
- favorites: addFavorite returns void (EmptyResp)
- services: handle paginated response from listServicesByPlayer
- files: use query param ?key= instead of path param /:id
- search: remove unsupported selectedGames/minRating params

lib/api/transactions.ts

@@ -26,19 +26,22 @@ function withOffsetLimit(path: string, options?: ListWalletTransactionsOptions):
   return `${path}?${searchParams.toString()}`
 }
 
-function unwrapWalletBalance(value: unknown): number | undefined {
-  if (typeof value === "number") return value
-  if (typeof value !== "object" || value === null) return undefined
+type WalletBalanceResponse = {
+  balance: string
+  frozenBalance?: string
+}
 
-  const v = value as { balance?: unknown; amount?: unknown }
+function parseBalance(value: unknown): number | undefined {
+  if (typeof value !== "object" || value === null) return undefined
+  const v = value as WalletBalanceResponse
+  if (typeof v.balance === "string") return Number(v.balance)
   if (typeof v.balance === "number") return v.balance
-  if (typeof v.amount === "number") return v.amount
   return undefined
 }
 
 export async function getWalletBalance(): Promise<number> {
   const res = await httpJson<unknown>("/api/v1/wallet/balance", { cache: "no-store" })
-  const balance = unwrapWalletBalance(res)
+  const balance = parseBalance(res)
   if (balance === undefined) {
     throw new Error("Invalid wallet balance response")
   }