Rewrite as current state rather than how it was decided

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013kj58Jugkic783b8ZrtTVZ
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2026-09-04 15:23:09 +09:00
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@@ -5,14 +5,11 @@ updated: 2026-09-04
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# Initial plan
## The scope question, first
## Scope
This started as "aggregator and pusher to the tablet over USB". The pushing part
may not need to exist: over USB the tablet has an IP link via RNDIS, and the
architecture already says Class B devices reaching the bus over IP connect to the
broker directly. A Flutter MQTT client can talk to mosquitto with no hop in between.
What does not go away:
Aggregation and the HTTP surface. **Not** a telemetry relay: over USB the tablet
has an IP link via RNDIS, and a client that can subscribe to the broker does so
directly.
| Job | Why it needs a gateway |
|---|---|
@@ -21,9 +18,6 @@ What does not go away:
| Static assets | Serving the PMTiles basemap to the display |
| Non-IP transports | BT SPP and plain serial for ESP32 clients have no broker access |
So: build the aggregation and the HTTP surface. Do not build a telemetry relay for
clients that can already subscribe for themselves.
## Order
1. Static file serving for the basemap — smallest useful thing, unblocks the map.