2 Commits

Author	SHA1	Message	Date
torlando-tech	1a89466b66	Add on-demand tile downloading with SD card caching ... TileDownloader fetches OSM raster tiles over HTTPS when not found on SD card, saves them for permanent offline cache. MapScreen calls ensure_tile() before each LVGL load — tiles download once, then load from SD on subsequent views. Default tile server: tile.openstreetmap.org (configurable via set_tile_url). Proper User-Agent set per OSM usage policy. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>	2026-03-05 14:58:19 -05:00
torlando-tech	cff41d4fa0	Add offline map display and Sideband-compatible telemetry location sharing ... - LVGL PNG decoder (lodepng) + SD card filesystem driver for loading OSM tiles - MapScreen with 2x2 tile grid, GPS marker, peer location markers, pan/zoom - 5th nav button (GPS icon) on conversation list for map access - TelemetryCodec: Sideband/Columba-compatible LXMF telemetry encode/decode - TelemetryManager: per-peer sharing sessions with duration/expiry, SPIFFS persistence - ChatScreen location share button with duration picker (15min/1hr/4hr/indefinite) - UIManager integration: telemetry send/receive via LXMF fields, map marker updates Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>	2026-03-04 21:05:28 -05:00