Fix duplicate Mongoose index warnings in Document and Member models

backend/src/models/Document.ts

@@ -63,13 +63,11 @@ const DocumentSchema: Schema = new Schema({
       'bylaws', 'financial_report', 'annual_report', 'board_report', 'committee_report',
       'meeting_agenda', 'board_meeting_agenda', 'committee_meeting_agenda', 'program_document'
     ],
-    index: true
   },
   isPublic: {
     type: Boolean,
     required: true,
     default: false,
-    index: true
   },
   meetingDate: { 
     type: Date

backend/src/models/Member.ts

@@ -39,13 +39,12 @@ const MemberSchema: Schema = new Schema({
     required: true,
     trim: true
   },
-  email: { 
-    type: String, 
+  email: {
+    type: String,
     required: true,
     trim: true,
     lowercase: true,
     match: [/^.+@.+\..+$/, 'Please enter a valid email address'],
-    unique: true
   },
   phone: { 
     type: String,