fix render time issues

fix loading time issues

perf(boot): lazy-load upload-only libs (heic2any, exifr)

perf(boot): inline only the lucide icons we use, drop the full library

perf(boot): precompile Tailwind to a static inlined stylesheet

perf(boot): preconnect script CDNs and pin dependency versions

feat: collab fixes, Cesium OOM mitigation, and frontend precompile