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

app/src/main/java/com/evsuite/abrp/RangeEstimator.java

@@ -154,6 +154,29 @@ final class RangeEstimator {
         return new Estimate(rangeKm, kwhPerKm * 100, distanceKm);
     }
 
+    /**
+     * Mean battery power over the last five minutes, time-weighted, standing included; null with
+     * less than a minute of samples. Positive is drawn from the pack, as the Power tile shows it.
+     */
+    synchronized Double averagePowerKw(long nowMs) {
+        double energyKwh = 0;
+        long covered = 0;
+        Sample previous = null;
+        for (Sample s : samples) {
+            if (s.timeMs < nowMs - WINDOW_MS) continue;
+            if (previous != null) {
+                long dt = s.timeMs - previous.timeMs;
+                if (dt > 0 && dt <= MAX_GAP_MS) {
+                    energyKwh += (previous.powerKw + s.powerKw) / 2 * (dt / 3_600_000.0);
+                    covered += dt;
+                }
+            }
+            previous = s;
+        }
+        if (covered < MIN_WINDOW_MS) return null;
+        return energyKwh / (covered / 3_600_000.0);
+    }
+
     synchronized void clear() {
         samples.clear();
         tripEnergyKwh = 0;