fix: update theme paths to match new mount location

asciinema/compose.yaml

@@ -8,7 +8,7 @@ services:
     volumes:
       - asciinema_data:/var/opt/asciinema
       - ./custom.exs:/opt/app/etc/custom.exs:ro
-      - ./theme:/opt/app/priv/static/theme:ro
+      - ./theme:/opt/app/priv/static/theme/custom:ro
     environment:
       SECRET_KEY_BASE: ${ASCIINEMA_SECRET_KEY}
       URL_HOST: ${ASCIINEMA_TRAEFIK_HOST}

asciinema/custom.exs

@@ -16,14 +16,9 @@ config :asciinema, Asciinema.Emails.Mailer,
     versions: [:"tlsv1.2", :"tlsv1.3"]
   ]
 
-# Serve custom theme files as static assets
-config :asciinema, AsciinemaWeb.Endpoint,
-  static_url: [path: "/theme"],
-  check_origin: false
-
 # Try to inject custom head HTML (if supported by asciinema)
 config :asciinema, AsciinemaWeb.Endpoint,
   extra_head_html: """
-  <link rel="stylesheet" href="/theme/custom.css">
-  <link rel="icon" type="image/svg+xml" href="/theme/favicon.svg">
+  <link rel="stylesheet" href="/theme/custom/custom.css">
+  <link rel="icon" type="image/svg+xml" href="/theme/custom/favicon.svg">
   """