log: stop emitting [trim] memory snapshots to changes.log

The two callers (MonitorService periodic trim, settings-closed cleanup)
are removed. Psapi.TrimSelf and the GC compaction calls still happen on
the same cadence — only the changes.log line is gone.

LogMemorySnapshot itself is intentionally kept; opt back in at a
specific call site if you're tracking a regression.

Author: carterscode

CLAUDE.md

@@ -141,9 +141,4 @@ Latest released version: **v0.1.29**. https://github.com/carterscode/GamerGuardi
 
 Working set after the v0.1.26 memory fixes is stable in the 40–80 MB band over hours of runtime. LOH compaction + visual-tree release on window close brought it down from a peak of 135 MB → ~25 MB at idle.
 
-The `[trim ]` snapshots in `changes.log` are the canonical way to verify memory health over time:
-```
-[2026-05-07 02:14:08] [trim  ] MEM    WS=42MB  Priv=128MB  Handles=812  Threads=18  (trim)
-```
-
-If a future session sees memory creeping back up, those entries point straight at when the regression happened.
+`ChangeLogger.LogMemorySnapshot` still exists but is no longer auto-called from `MonitorService` or the settings-closed path — the periodic `[trim ]` lines were too noisy in `changes.log`. Re-enable temporarily by adding the call back at either site if you need to track a regression.

src/GamerGuardian/App.xaml.cs

@@ -165,7 +165,6 @@ private void ShowSettings()
                     GC.WaitForPendingFinalizers();
                     GC.Collect();
                     GamerGuardian.Native.Psapi.TrimSelf();
-                    GamerGuardian.Services.ChangeLogger.LogMemorySnapshot("settings-closed");
                 }, System.Windows.Threading.DispatcherPriority.ApplicationIdle);
             };
             _settingsWindow.Show();

src/GamerGuardian/Services/MonitorService.cs

@@ -126,7 +126,6 @@ private async Task TickAsync()
                 GCSettings.LargeObjectHeapCompactionMode = GCLargeObjectHeapCompactionMode.CompactOnce;
                 GC.Collect(2, GCCollectionMode.Optimized, blocking: false, compacting: true);
                 Psapi.TrimSelf();
-                ChangeLogger.LogMemorySnapshot("trim");
             }
         }
         finally