Podcast: built-in screen for Podgrab (shows, episodes, playback, search)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

docker-compose.yml

@@ -24,6 +24,7 @@ services:
       LYRICS_API_URL: http://127.0.0.1:9999                  # the bundled lyrics service (Lyrica, below, shares this container's network); remove this line and the service to skip it
       SIGNAL_API_URL: http://127.0.0.1:8085                  # the bundled Signal bridge (below, shares this container's network); remove this line and the service to skip Signal
       PODCAST_URL: ${PODCAST_URL:-https://podcast.necloud.us/}
+      PODGRAB_PASSWORD: ${PODGRAB_PASSWORD:-}                # Podgrab's PASSWORD setting, if it has one (the sign-in name is always podgrab); stays on the server
       ONLYOFFICE_JWT_SECRET: ${ONLYOFFICE_JWT_SECRET:-}    # same value as the OnlyOffice server's JWT secret
       PUBLIC_URL: ${PUBLIC_URL:-}                           # e.g. https://hub.necloud.us (OnlyOffice posts saved edits here)
       HUB_SETUP_CODE: ${HUB_SETUP_CODE:-}                   # first passkey; if empty, a code is printed in the log