fix: bgutil-ytdlp-pot-provider ile PO-token duvarını aş

Cookie bot-check'i çözdü ama "The page needs to be reloaded" hatası
kalıcıydı — YouTube artık proof-of-origin token da istiyor. Coolify
stack'ine brainicism/bgutil-ytdlp-pot-provider sidecar servisi
(sc_pot_provider, port 4416) eklendi, api-daemon imajına Python
plugin'i kuruldu, her yt-dlp çağrısına
--extractor-args youtubepot-bgutilhttp:base_url=... eklendi.
ytdlpCookieArgs -> ytdlpAntiBotArgs olarak birleştirildi.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

docker-compose.yml

@@ -19,6 +19,10 @@ services:
     volumes:
       - postgres-data:/var/lib/postgresql/data
 
+  sc_pot_provider:
+    image: brainicism/bgutil-ytdlp-pot-provider
+    restart: unless-stopped
+
   sc_api_daemon:
     build:
       context: .
@@ -35,6 +39,7 @@ services:
       TELEGRAM_BOT_TOKEN: ${TELEGRAM_BOT_TOKEN:-}
       TELEGRAM_CHAT_ID: ${TELEGRAM_CHAT_ID:-}
       YTDLP_COOKIES_B64: ${YTDLP_COOKIES_B64:-}
+      YTDLP_POT_PROVIDER_URL: http://sc_pot_provider:4416
     volumes:
       - shared-media:/shared-media
     ports:
@@ -42,6 +47,7 @@ services:
     depends_on:
       - sc_redis
       - sc_postgres
+      - sc_pot_provider
 
   sc_heavy_worker:
     build: