Pressable Integration 5.1

Added: Robust site mapping to match Pressable sites by primary URLs and custom domains for more reliable site detection.
Added: Contextual empty-state placeholders when Pressable credentials or sites are unavailable.
Added: New utility helpers for rendering empty-page placeholders and displaying human-readable elapsed time.
Updated: Improved Pressable API token handling with clearer credential validation, safer token saving, and more reliable token refresh behavior.
Updated: Improved Pressable settings flows, including clearing credentials, validating inputs, saving tokens, and syncing site data.
Updated: Redesigned the Pressable overview table layout with clearer rows, columns, actions, and contextual interface elements.
Updated: Streamlined modal and form layouts for a cleaner and easier-to-use admin experience.
Updated: Improved backup and widget interface styling, including padded segments, dropdown icon orientation, menu styling, and minor markup refinements.
Updated: Improved internal Pressable site mapping logs to make mapping changes easier to review and troubleshoot.
Updated: Improved plugin initialization timing to ensure proper loading sequence with other extensions during WordPress startup.
Dev: Added
get_mainwp_site_by_pressable_urls()to match MainWP sites against Pressable primary URLs and custom domains.Dev: Added
get_domains_list()to fetch Pressable site domain data.Dev: Added
save_access_token_data()and updated refresh_access_token() to centralize access token persistence.Dev: Updated
get_access_token()to support explicit client credentials.Dev: Added
update_pressable_wpid()and delete_all_pressable() database helpers.