Clarify ESP-IDF navigation support and saved file handling
Document 1.0.0 offline navigation, widgets and current configuration
Document discovered gateway handoff and live publication behavior
docs: expose Reticulum discovery and IFAC setup in wiki navigation
docs: clarify opportunistic LXMF delivery states
Link NAS native discovery deployment instructions
Document discovered gateway aging and retention
Document failure-aware Reticulum gateway selection
Document independent Reticulum settings and TCP IFAC access