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Settle decision 5: Rust services, Python tooling, Dart client

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Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013kj58Jugkic783b8ZrtTVZ
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Mikkeli Matlock
2026-09-04 17:15:57 +09:00
parent 0b929d30ca
commit b9d138652e
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docs/ARCHITECTURE.md
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| 2 | Displays are bus subscribers; no display-specific logic upstream | Accepted | 2026-08-14 | | 2 | Displays are bus subscribers; no display-specific logic upstream | Accepted | 2026-08-14 |
| 3 | Listen-only sniffing + active OBD-II, single writer | Accepted | 2026-08-14 | | 3 | Listen-only sniffing + active OBD-II, single writer | Accepted | 2026-08-14 |
| 4 | MQTT as the bus | **Proposed** | 2026-08-14 | | 4 | MQTT as the bus | **Proposed** | 2026-08-14 |
| 5 | Implementation language(s) per service | **Open** | — | | 5 | Rust for on-Orin services, Python for off-car tooling, Dart for the display client | Accepted | 2026-09-04 |
| 6 | Local logging first; off-board LTE telemetry deferred | Accepted | 2026-08-14 | | 6 | Local logging first; off-board LTE telemetry deferred | Accepted | 2026-08-14 |
| 7 | Camera/AI inference is a later, separate task | Accepted | 2026-08-14 | | 7 | Camera/AI inference is a later, separate task | Accepted | 2026-08-14 |
| 8 | Self-hosted offline navigation (MapLibre GL + Valhalla + PMTiles) over a cloud maps SDK | Accepted | 2026-09-03 | | 8 | Self-hosted offline navigation (MapLibre GL + Valhalla + PMTiles) over a cloud maps SDK | Accepted | 2026-09-03 |
docs/REPOS.md
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docs/BOM.md only where the repo owns hardware docs/BOM.md only where the repo owns hardware
``` ```
### Languages
| Where | Language | Why it is there |
|---|---|---|
| `svc-*` — on the Orin | **Rust** | No GC, low resident memory on a shared 8 GB pool, and fast start for the tier-1 capture services |
| `tool-*` — off-car | **Python** | Batch work where development speed is the only constraint that binds |
| `app-flutter` | **Dart** | Flutter |
Python floors at **3.10**, the Orin's version, for anything that might run there.
The workstation has 3.14; do not rely on it.
Rust binaries are built for `aarch64-unknown-linux-gnu`. `Cargo.lock` and
`pubspec.lock` are committed — these are applications, not libraries.
### Writing style ### Writing style
Documents describe **what is and what will be**. They are not changelogs — git Documents describe **what is and what will be**. They are not changelogs — git