Address review comments: doc load() param, sort rationale, repeat:true

Agent-Logs-Url: https://github.com/winnerspiros/osu/sessions/5c10b7c5-8efb-45d4-803c-bd7bb9977e39

Co-authored-by: winnerspiros <1675249+winnerspiros@users.noreply.github.com>

Author: Copilot

osu.Android/HangWatchdog.cs

@@ -225,6 +225,9 @@ private static void appendProcTaskSnapshot(StringBuilder sb)
                     return;
                 }
 
+                // Sort by tid so consecutive dumps for the same hang produce
+                // diff-able output — makes it easy to spot which thread changed
+                // state between two snapshots taken 10s apart during a long hang.
                 collected.Sort(StringComparer.Ordinal);
 
                 foreach (string tid in collected)
@@ -316,6 +319,10 @@ public void Arm()
 
                 try
                 {
+                    // repeat: true → reschedule every heartbeat_interval_ms ms.
+                    // The delegate runs on the game thread itself, so its execution
+                    // *is* the liveness signal: if the thread is hung, this never
+                    // fires and LastTickUtcMs stays stale for the monitor to detect.
                     thread.Scheduler.AddDelayed(tick, heartbeat_interval_ms, true);
                 }
                 catch (Exception e)

osu.Android/OsuGameAndroid.cs

@@ -140,6 +140,11 @@ public override Version AssemblyVersion
         private AndroidMouseHandler? mouseHandler;
         private AndroidKeyboardHandler? keyboardHandler;
 
+        /// <summary>
+        /// Background-loaded entry point. <paramref name="frameworkConfig"/> is injected
+        /// to drive <see cref="applyAndroidFrameSyncMigrationOnce"/>, the one-shot Android
+        /// FrameSync default migration; everything else here is unrelated init wiring.
+        /// </summary>
         [BackgroundDependencyLoader]
         private void load(FrameworkConfigManager frameworkConfig)
         {