changed verifier bot to marksbot

deploy/migrations/20260714003127_marks_bot_verified.up.sql

@@ -0,0 +1,12 @@
+-- @marksbot (formerly @verifierbot) now carries the platform checkmark itself
+-- (domain.VerifierBotUser().Verified = true). This is a deliberate operator
+-- choice on top of the original upstream design (which kept it unverified to
+-- avoid implying the third-party mark it grants is somehow platform-endorsed):
+-- the checkmark here only asserts "this account is a legitimate first-party
+-- service bot", not "this bot's grants are official" -- the two mechanisms
+-- remain fully independent regardless of this flag.
+
+UPDATE public.users
+SET verified = true,
+    updated_at = now()
+WHERE id = 1250000013;