App 2.13.0: tyre pressures in bar; 5-minute average power

Tyre pressures show in bar by default; Settings → Display offers kPa
and psi as well. Display only: the car reports kPa and the server keeps
storing kPa.

A "Power, 5-min average" card under Power: the time-weighted mean
battery power over the last five minutes, standing included, from the
same samples as the 5-minute range.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki

SPECS.md

@@ -113,6 +113,9 @@ tyre pressures, GPS (lat, lon, elevation, heading) and the is_* flags. It does *
   INGEST_TOKEN) into git and pushed it. Commit amended and force-pushed; both values regenerated in
   the now gitignored `k8s/secrets.yaml` (since moved to `k8s/secrets/secrets.yaml`, outside
   `kubectl apply -f k8s/`). Filled-in secrets live only there from now on.
+- 2026-10-18 — App 2.13.0: tyre pressures in bar by default, kPa or psi selectable (Settings →
+  Display; display only, the car and the server keep kPa). "Power, 5-min average" card under
+  Power: time-weighted mean battery power, standing included.
 - 2026-10-18 — App 2.12.1: no scroll bars (the 2-second refresh kept them from ever fading);
   "Energy since start" tile (net kWh of the trip, recuperation counted back) left of "Usage since
   start".