fix(lap): keep best laps per track layout and count the current session for records

A layout switch during a running open practice kept every driver's
old-layout best lap, blocking personal-best calls and skewing the
practice leaderboard. Best laps now restart on a new layout and each
lap records its layout. The track record baseline now includes the
current session so the same record isn't called twice.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rc-racecore",
-  "version": "1.29.0",
+  "version": "1.29.1",
   "private": true,
   "description": "RC RaceCore live timing and race control with AMMC ingest and SQLite persistence",
   "engines": {