- Fixed Portugal ANAC imports when the official ED-269 dataset repeats a zone identifier.
- Exact duplicate features are ignored while distinct volumes keep deterministic unique database identifiers.
- Reworked the world map to show lightweight country summaries at European overview zoom levels and load detailed zones only when zoomed in.
- Added debounced, cancellable and cached viewport requests with visible loading and error feedback.
- Reduced map database reads to the fields required for rendering.
SKYMISSION BETA 0.4.1.12