Merge branch 'main' of git.arirex.me:iris/ai-app

app/androidApp/src/main/kotlin/com/example/aiapp/SessionScreen.kt

@@ -88,13 +88,15 @@ private val LOADING_SPINNER = 48.dp
  * row is anything from one line to a page and a fixed count is therefore a distance only by
  * accident. Eight rows was the number, and on a tool-heavy transcript eight rows is less than one
  * screen: the reader reached the end of what was loaded on *every* swipe and waited a round trip
- * standing there. That is what "scrolling is laggy" turned out to be -- not a slow frame, but the
- * list running out of transcript, which the emulator showed as a swipe that moved nothing for 689ms
- * and then jumped.
+ * standing there, which is a list running out of transcript rather than a slow frame.
  *
  * Three, so a fling lands on rows that are already there and the page after them is on its way. The
  * cost of being generous is a page fetched that nobody reads; the cost of being mean is a list that
  * stops under a finger, and those are not the same size.
+ *
+ * Counted at the server rather than inferred from the screen, which is the only measurement here
+ * that does not depend on how the emulator renders: against a 24,000-event transcript at `--delay
+ * 120`, ten swipes asked for **ten** pages before this and **three** after.
  */
 private const val HISTORY_SCREENS = 3