Home Assistant custom integration and Lovelace card to display today's schedule for Polskie Radio Dzieciom.

• Fetches today's schedule from https://apipr.polskieradio.pl/api/schedule?Program=11 with browser-like headers.
• Sensor sensor.polskie_radio_dzieciom_schedule holds the current item title, with attributes for current, next, and rest of day (including progress, remaining time, and formatted times).
• Sensor sensor.polskie_radio_dzieciom_now.
• Sensor sensor.polskie_radio_dzieciom_next.
• Lovelace card prd-card shows current programme with progress bar, next with start time, and an expandable list for the rest of the day.

1. In HACS, go to Integrations ➜ Custom repositories ➜ Add:
   • Repository: https://github.com/seler/ha-prd
   • Category: Integration
2. Install the repository. Restart Home Assistant.
3. Go to Settings ➜ Devices & services ➜ Add integration ➜ search for "Polskie Radio Dzieciom" and add it.
4. Frontend card (manual):
   • Copy www/community/prd-card/prd-card.js from this repository into your HA config at /config/www/prd-card/prd-card.js (create the folder if needed).
   • In Settings ➜ Dashboards ➜ Resources, add:
     • URL: /local/prd-card/prd-card.js?v1
     • Type: module
   • If the card doesn't update after replacing the file, bump the resource URL with a version, e.g. /local/prd-card/prd-card.js?v=2, and hard-refresh the browser.

- type: 'custom:prd-card'
  entity: sensor.polskie_radio_dzieciom_schedule

1. In HACS, open the repo and click Update when available, then restart HA.
2. Copy the updated www/community/prd-card/prd-card.js into /config/www/prd-card/.
3. Update resource version (?vN+1).
4. Restart HA.