**JW Player Branding Migration**

- Purpose: replace legacy ViewShark branding inside the JW Player serialized config stored in `db_fileplayers`.
- What it changes:
  - `jw_logo_file` → empty (no external logo by default)
  - `jw_logo_link` → your `site_url` (if set), otherwise empty
  - `jw_rc_text` → `Powered by EasyStream` (uses your `site_name` if present)
  - `jw_rc_link` → your `site_url` (if set), otherwise empty

Run after your database is initialized (docker-compose up created the schema):

- `php f_scripts/migrations/update_jw_branding.php`

Notes
- The script safely unserializes the PHP array, updates keys, and reserializes.
- It only touches `db_name` in (`jw_local`, `jw_embed`).
- If no change is necessary, it leaves rows untouched.