core, ui: security code verification in channels (verify member key) (#7255)

src/Simplex/Chat/Store/Postgres/Migrations/M20260714_member_security_code.hs

@@ -0,0 +1,21 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Chat.Store.Postgres.Migrations.M20260714_member_security_code where
+
+import Data.Text (Text)
+import Text.RawString.QQ (r)
+
+m20260714_member_security_code :: Text
+m20260714_member_security_code =
+  [r|
+ALTER TABLE group_members ADD COLUMN member_security_code TEXT;
+ALTER TABLE group_members ADD COLUMN member_security_code_verified_at TIMESTAMPTZ;
+|]
+
+down_m20260714_member_security_code :: Text
+down_m20260714_member_security_code =
+  [r|
+ALTER TABLE group_members DROP COLUMN member_security_code;
+ALTER TABLE group_members DROP COLUMN member_security_code_verified_at;
+|]

src/Simplex/Chat/Store/Postgres/Migrations/chat_schema.sql

@@ -836,7 +836,9 @@ CREATE TABLE test_chat_schema.group_members (
     relay_link bytea,
     member_pub_key bytea,
     removed_at timestamp with time zone,
-    roster_served_version bigint
+    roster_served_version bigint,
+    member_security_code text,
+    member_security_code_verified_at timestamp with time zone
 );