Clarify active Windows client architecture

apps/windows-client/src-tauri/src/activity.rs

@@ -0,0 +1,23 @@
+use crate::models::ActivityEntry;
+
+pub const DEFAULT_ACTIVITY_LIMIT: usize = 200;
+
+pub fn sort_activity_desc(mut entries: Vec<ActivityEntry>) -> Vec<ActivityEntry> {
+    entries.sort_by(|left, right| right.at.cmp(&left.at).then_with(|| right.id.cmp(&left.id)));
+    entries
+}
+
+pub fn cap_activity(entries: Vec<ActivityEntry>, limit: usize) -> Vec<ActivityEntry> {
+    let mut entries = sort_activity_desc(entries);
+    entries.truncate(limit);
+    entries
+}
+
+pub fn append_activity(
+    mut entries: Vec<ActivityEntry>,
+    entry: ActivityEntry,
+    limit: usize,
+) -> Vec<ActivityEntry> {
+    entries.push(entry);
+    cap_activity(entries, limit)
+}