feat: a finished trip is saved with the track it was integrated from

The recorder was storing totals and throwing the shape away. Every model this app
is heading towards is fitted from that shape, so the recorder now hands the track
to the versioned history file along with the summary.

Nothing on screen changes. The point is that the data starts existing now, since
a summary cannot be un-summarised later.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: malys

CHANGELOG.md

@@ -49,6 +49,13 @@ All notable changes follow [Keep a Changelog](https://keepachangelog.com/en/1.1.
 
 ### Changed
 
+- **A recorded trip now stores its sample track alongside its totals.** The recorder hands the
+  track to EVHardware's versioned history file, which keeps one sample per five seconds and
+  drops the oldest tracks — never a whole trip — when the file approaches its size ceiling.
+  Nothing on screen changes yet; the tracks are what the consumption, climate-share and
+  arrival-state-of-charge models will be fitted from, and they have to exist before those
+  models can.
+
 - The diagnostics report is built on the sampler thread. It reads ten vehicle properties over
   binder and the crash file off disk, neither of which belongs on the thread drawing the dialog.
 

EVHardware

@@ -140,9 +140,9 @@ class TripRecordingService : Service() {
     /** Called through the binder: the dashboard is on screen whenever a trip can be stopped. */
     fun stopTrip() {
         val endedAt = latestSnapshot?.timestampMs ?: System.currentTimeMillis()
-        val summary = EnergyTripSession.stop(endedAt)
+        val recorded = EnergyTripSession.stop(endedAt)
         ServiceCompat.stopForeground(this, ServiceCompat.STOP_FOREGROUND_REMOVE)
-        if (summary == null) {
+        if (recorded == null) {
             stopWhenNobodyNeedsIt()
             return
         }
@@ -152,7 +152,8 @@ class TripRecordingService : Service() {
         // service stops itself the moment nobody needs it, and a stopSelf() racing the append
         // would drop the trip the driver just finished.
         sampler.execute {
-            if (!tripStore.append(summary)) AppLogger.w(TAG, "trip history could not be saved")
+            val saved = tripStore.append(recorded.summary, recorded.samples)
+            if (!saved) AppLogger.w(TAG, "trip history could not be saved")
             main.post { stopWhenNobodyNeedsIt() }
         }
     }