Add brand account support for cuidas account

- Add BRAND_ACCOUNT_ID configuration for brand account usage
- Pass user parameter to YTMusic initialization
- Works with browser authentication as per ytmusicapi docs
- Display brand account info in initialization message

create_playlist.py

@@ -36,6 +36,8 @@ PLAYLIST_NAME = "Core Fest 2025"
 PLAYLIST_DESCRIPTION = "Festival playlist featuring top songs from Core Fest 2025 bands"
 SONGS_PER_BAND = 3
 BROWSER_AUTH_FILE = "browser.json"
+# Brand account ID (set to None to use default account)
+BRAND_ACCOUNT_ID = "107494778873257953135"  # cuidas brand account
 
 
 def main():
@@ -46,7 +48,8 @@ def main():
         sys.exit(1)
 
     # Initialize YTMusic with browser authentication
-    print(f"Initializing YouTube Music API with {BROWSER_AUTH_FILE}...")
+    account_info = f" (brand account: {BRAND_ACCOUNT_ID})" if BRAND_ACCOUNT_ID else ""
+    print(f"Initializing YouTube Music API with {BROWSER_AUTH_FILE}{account_info}...")
     try:
         # Load browser.json as dict
         with open(BROWSER_AUTH_FILE, 'r') as f:
@@ -87,7 +90,8 @@ def main():
             auth_string = json.dumps(auth_dict)
         
         # Initialize with the properly formatted auth string
-        yt = YTMusic(auth=auth_string)
+        # Pass brand account ID if specified (works with browser auth too)
+        yt = YTMusic(auth=auth_string, user=BRAND_ACCOUNT_ID if BRAND_ACCOUNT_ID else None)
     except json.JSONDecodeError as e:
         print(f"Error parsing {BROWSER_AUTH_FILE}: {e}")
         print("Please check that your browser.json file is valid JSON.")