Tests, UX improvements.

server/models/activityLog.js

@@ -0,0 +1,58 @@
+import mongoose from 'mongoose'
+
+const ACTIVITY_TYPES = [
+  'member_joined',
+  'event_registered',
+  'event_cancelled',
+  'event_waitlisted',
+  'peer_support_enabled',
+  'peer_support_disabled',
+  'circle_changed',
+  'contribution_changed',
+  'email_changed',
+  'profile_updated',
+  'subscription_created',
+  'subscription_cancelled',
+  'status_changed',
+  'role_changed',
+  'admin_profile_update',
+  'slack_invited',
+  'email_sent'
+]
+
+const activityLogSchema = new mongoose.Schema({
+  member: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: 'Member',
+    required: true
+  },
+  type: {
+    type: String,
+    enum: ACTIVITY_TYPES,
+    required: true
+  },
+  visibility: {
+    type: String,
+    enum: ['member', 'admin', 'public'],
+    default: 'member'
+  },
+  metadata: {
+    type: mongoose.Schema.Types.Mixed,
+    default: () => ({})
+  },
+  performedBy: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: 'Member'
+  },
+  timestamp: {
+    type: Date,
+    default: Date.now
+  }
+})
+
+// Indexes
+activityLogSchema.index({ member: 1, timestamp: -1 })
+activityLogSchema.index({ member: 1, visibility: 1, timestamp: -1 })
+activityLogSchema.index({ type: 1, timestamp: -1 })
+
+export default mongoose.models.ActivityLog || mongoose.model('ActivityLog', activityLogSchema)