fix(patreon): declare aiohttp/yarl deps and use public yarl.URL import

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/services/patreon_resolver.py

@@ -12,6 +12,7 @@ import os
 from typing import Optional
 
 import aiohttp
+from yarl import URL
 
 logger = logging.getLogger(__name__)
 
@@ -42,7 +43,7 @@ def _load_cookie_jar(cookies_path: Optional[str]) -> Optional[aiohttp.CookieJar]
     for cookie in moz:
         jar.update_cookies(
             {cookie.name: cookie.value},
-            response_url=aiohttp.helpers.URL(
+            response_url=URL(
                 f"https://{cookie.domain.lstrip('.')}/"
             ),
         )

backend/requirements.txt

@@ -13,6 +13,10 @@ alembic
 celery[redis]
 redis
 
+# HTTP client
+aiohttp
+yarl
+
 # Utilities
 pydantic
 pydantic-settings

backend/tests/services/test_patreon_resolver.py

@@ -1,6 +1,7 @@
 """Unit tests for the Patreon campaign-ID resolver."""
+import asyncio
+
 import aiohttp
-import pytest
 from aioresponses import aioresponses
 
 from app.services.patreon_resolver import resolve_campaign_id
@@ -55,7 +56,6 @@ async def test_network_error_returns_none():
 
 
 async def test_timeout_returns_none():
-    import asyncio
     with aioresponses() as mock:
         mock.get(CAMPAIGNS_URL, exception=asyncio.TimeoutError())
         result = await resolve_campaign_id("mstsu", cookies_path=None)