Three bugs prevented Pyxis telemetry from appearing on Columba's map:
1. Bytes({0x02}) called Bytes(size_t capacity=2) instead of creating a
1-byte buffer containing 0x02. Both field keys were empty, so the
second fields_set() overwrote the first — FIELD_TELEMETRY was missing
from the wire payload. Fixed with Bytes(&key, 1).
2. FIELD_COLUMBA_META was encoded as msgpack but Columba expects JSON
(json.loads after .decode('utf-8')). Changed to manual JSON string.
3. expires was sent as Unix seconds but Columba compares against
System.currentTimeMillis() (milliseconds). Locations were immediately
deleted as expired. Now sends expires_ms = end_time * 1000.
Also: set OPPORTUNISTIC delivery method on telemetry/cease messages,
add pyxis_log() diagnostics for telemetry pipeline, and manage tile
download task lifecycle (start on show, stop on hide).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
torlando-tech