v1.2.0

Added

• Favorites GeoJSON export: export now produces a standard GeoJSON FeatureCollection (RFC 7946) downloaded as maphop-favorites-YYYY-MM-DD.geojson, loadable directly in QGIS, geojson.io, and other GIS tools.
• Favorites map overlay: "Show on Map" toggle in the Favorites section renders all saved favorites as green pin markers on the live map; hovering over a pin shows a popup with the favorite's name; toggle state persists across sessions via localStorage.
• Multi-format import: favorites import now accepts GeoJSON FeatureCollection files (.geojson or .json) in addition to the legacy maphop-favorites envelope and raw JSON arrays. Import also accepts .geojson file extension.
• Comprehensive README with user introduction, feature table, how-to-use guide, screenshot placeholder, and developer build/deploy instructions.
• Product spec updated (v1.6): §4.6 updated to reflect GeoJSON export format with import format table; new §4.8 Favorites Map Overlay; §3 Architecture module table and data flow updated; §5 Flow 9 updated, Flow 10 added; §6 component inventory updated; §9 success criteria updated.

Changed

• Favorites export status toast updated to "Favorites exported as GeoJSON."

Fixed

• Location accordion section toggle (locationSectionToggle) was not wired up in dom.js and therefore could not be expanded or collapsed; added it to menuSectionToggleElements alongside the Favorites and Maps toggles.