feat: Add recent action indicators for invites and friend requests (#809)

src/composables/useRecentActions.js

@@ -0,0 +1,57 @@
+import { useLocalStorage } from '@vueuse/core';
+
+import { useGeneralSettingsStore } from '../stores/settings/general';
+
+/**
+ * Persisted Map tracking recent invite/request actions.
+ * Key: `${userId}:${actionType}`, Value: timestamp (ms).
+ * Stored in localStorage via @vueuse/core.
+ */
+const recentActions = useLocalStorage('VRCX_recentActions', {});
+
+const TRACKED_ACTIONS = new Set([
+    'Send Friend Request',
+    'Request Invite',
+    'Invite',
+    'Request Invite Message',
+    'Invite Message'
+]);
+
+/**
+ * @param {string} userId
+ * @param {string} actionType
+ */
+export function recordRecentAction(userId, actionType) {
+    if (!TRACKED_ACTIONS.has(actionType)) {
+        return;
+    }
+    recentActions.value[`${userId}:${actionType}`] = Date.now();
+}
+
+/**
+ * @param {string} userId
+ * @param {string} actionType
+ * @returns {boolean}
+ */
+export function isActionRecent(userId, actionType) {
+    const generalSettings = useGeneralSettingsStore();
+    if (!generalSettings.recentActionCooldownEnabled) {
+        return false;
+    }
+    const key = `${userId}:${actionType}`;
+    const ts = recentActions.value[key];
+    if (!ts) {
+        return false;
+    }
+    const cooldownMs = generalSettings.recentActionCooldownMinutes * 60 * 1000;
+    if (Date.now() - ts < cooldownMs) {
+        return true;
+    }
+    // Expired, clean up
+    delete recentActions.value[key];
+    return false;
+}
+
+export function clearRecentActions() {
+    recentActions.value = {};
+}