ni5arga/sightline — reverse-engineered prompt

Build me a web app called Sightline that works like an OSINT search tool for real world infrastructure using OpenStreetMap data. I want to be able to type normal searches like “telecom towers in Karnataka” or more structured searches like “type:data_center operator:google region:california” and see matching assets on an interactive map along with a clean results list.

It should support the main infrastructure categories from the README, like telecom sites, power infrastructure, airports, ports, warehouses, pipelines, military locations, hospitals, embassies, surveillance cameras, and transit hubs. When someone searches for a place, resolve the location, pull the relevant map data, and show useful details like names, coordinates, and tags from the source data.

Make the UI feel modern and simple, similar to the screenshots, with a search bar, filters, map view, and result cards. Please handle slow or failed map and geocoding requests gracefully, and add caching so repeated searches feel fast. Use the README as the source of truth, and look up current docs online if you need to.