v2.5.5
Fixed
• Prevented errors when get_taxonomy() returned false in the category metabox.
• Hardened capability handling for ICS-imported events.
Improved
• Made imported calendar events reliably read-only (no edit, quick edit, or direct edit access).
• Added defensive checks for WordPress hooks (map_meta_cap, save_post) to avoid runtime errors.
• Improved post type and taxonomy validation to make admin behavior more robust.