fix: pass cookies to AsyncClient instead of per-request

Fixes httpx DeprecationWarning: Setting per-request cookies is deprecated.
Cookies are now set on the AsyncClient instance and removed from all
individual post() calls and internal function signatures.

app/methods/ton.py

@@ -26,19 +26,16 @@ HEADERS: dict[str, str] = {
 async def search_ads_recipient(
     client: httpx.AsyncClient,
     fragment_hash: str,
-    cookies: dict,
     username: str,
 ) -> str:
     await client.post(
         f"https://fragment.com/api?hash={fragment_hash}",
         headers=HEADERS,
-        cookies=cookies,
         data={"mode": "new", "method": "updateAdsTopupState"},
     )
     resp = await client.post(
         f"https://fragment.com/api?hash={fragment_hash}",
         headers=HEADERS,
-        cookies=cookies,
         data={"query": username, "method": "searchAdsTopupRecipient"},
     )
     result = parse_json_response(resp, "searchAdsTopupRecipient")
@@ -54,14 +51,12 @@ async def search_ads_recipient(
 async def init_ads_topup(
     client: httpx.AsyncClient,
     fragment_hash: str,
-    cookies: dict,
     recipient: str,
     amount: int,
 ) -> str:
     resp = await client.post(
         f"https://fragment.com/api?hash={fragment_hash}",
         headers=HEADERS,
-        cookies=cookies,
         data={"recipient": recipient, "amount": amount, "method": "initAdsTopupRequest"},
     )
     result = parse_json_response(resp, "initAdsTopupRequest")
@@ -88,12 +83,12 @@ async def topup_ton(username: str, amount: int) -> dict:
         # logger.info("Retrieving TON wallet info")
         account = await get_account_info()
 
-        async with httpx.AsyncClient() as client:
+        async with httpx.AsyncClient(cookies=cookies) as client:
             logger.info("Searching recipient: %s", username)
-            recipient = await search_ads_recipient(client, fragment_hash, cookies, username)
+            recipient = await search_ads_recipient(client, fragment_hash, username)
 
             logger.info("Initializing topup request: %s TON to %s", amount, username)
-            req_id = await init_ads_topup(client, fragment_hash, cookies, recipient, amount)
+            req_id = await init_ads_topup(client, fragment_hash, recipient, amount)
 
             # logger.info("Requesting transaction payload (req_id=%s)", req_id)
             tx_data = {
@@ -105,7 +100,7 @@ async def topup_ton(username: str, amount: int) -> dict:
                 "method": "getAdsTopupLink",
             }
             transaction = await execute_transaction_request(
-                client, HEADERS, cookies, account, tx_data, fragment_hash
+                client, HEADERS, account, tx_data, fragment_hash
             )
 
         logger.info("Broadcasting transaction to TON blockchain")