Add BeatMods parsing and userdata restore

docs/SMOKETEST.md

@@ -3,10 +3,10 @@
 Use this workflow after installing or removing a plugin batch. It is adapted
 from the Setlist repo's working Proton/BSManager smoketest notes.
 
-The routine smoketest should be short: about 10 seconds wall time for launch and
-log check, followed by immediate teardown. If expected plugin log lines do not
-appear inside that window, treat that as a failure to investigate instead of
-stretching the timeout.
+The routine smoketest should be short: about 20 seconds wall time for launch,
+menu/UI initialization, and log check, followed by immediate teardown. If
+expected plugin log lines do not appear inside that window, treat that as a
+failure to investigate instead of repeatedly stretching the timeout.
 
 ## Preconditions
 
@@ -47,7 +47,7 @@ export SteamEnv=1
 export OXR_PARALLEL_VIEWS=1
 
 (
-  sleep 10
+  sleep 20
   pkill -TERM -f "[B]eat Saber.exe" || pkill -TERM -f "[B]eat Saber" || true
   sleep 2
   pkill -KILL -f "[B]eat Saber.exe" || pkill -KILL -f "[B]eat Saber" || true