update database structure

back/sql/database.dart

@@ -25,6 +25,7 @@ Table "mailboxes" {
 
 Table "messages" {
   "id" int [pk, not null, increment]
+  "messageID" text [pk, not null]
   "idate" timestamp [not null]
   "rfc822size" int
 }
@@ -103,3 +104,37 @@ Ref: address_fields.message > messages.id
 Ref: address_fields.part > part_numbers.part
 Ref: address_fields.field > field_names.id
 Ref: address_fields.address > addresses.id
+
+// app table
+Table "front_threads" {
+  "id" int [pk, not null, increment]
+  "room" int [not null]
+  "name" text
+  "notSeen" int [not null, default: true]
+  "lastUpdate" timestamp [not null]
+  "isDm" bool [not null, default: true]
+}
+
+Ref: front_threads.room > front_rooms.id
+
+Table "front_rooms" {
+  "id" int [pk, not null, increment]
+  "name" text
+  "isGroup" bool [not null, default: false]
+  "notSeen" int [not null]
+  "lastUpdate" timestamp [not null]
+}
+
+Table "front_room_messages" {
+  "room" int [not null]
+  "thread" int [not null]
+  "message" int [not null]
+}
+
+Ref: front_room_messages.room > front_rooms.id
+Ref: front_room_messages.message - messages.id
+Ref: front_room_messages.thread > front_threads.id
+
+
+
+