Comment Blacklist Updater compatibility with REEID Translate

Plugin capabilities

• Updates the WordPress “Comment Blacklist” terms shown under Settings/Discussion using blacklist data sourced from either a default remote list, one or more remote URLs, and/or a local `blacklist.txt` file placed in the root of the site’s `uploads` directory.
• Supports configuring blacklist sources via the WordPress administration UI under Settings/Discussion (including a “Blacklist source” configuration area).
• Fetches remote blacklist content from configured URLs and uses it when the remote file exists and is accessible (must return HTTP 200 per the plugin description).
• Provides a filter-based extension point `cblm_sources` to replace all blacklist sources or add additional blacklist sources programmatically.
• Provides a filter-based extension point `cblm_update_schedule` to change the update cadence; the default schedule is described as updating once every 24 hours.
• Performs periodic background updates (described as an update process that runs every 24 hours) and records update-related state in WordPress options and transients.
• Stores plugin state in WordPress options and transients (options include items such as `blacklist_last_update` and `blacklist_github_source_updated`; transients include items such as `blacklist_update_process` and `blacklist_github_update_check`), and deletes these when uninstalled via the WordPress admin.
• Requires administrator privileges to access/use the plugin after the September 2023 update; non-admin users receive a permissions error message when attempting to access the plugin page.