fix: sync account freeze peer visibility

deploy/migrations/0131_account_freeze_visibility.down.sql

@@ -0,0 +1,5 @@
+DROP TABLE IF EXISTS public.account_freeze_notifications;
+
+ALTER TABLE public.account_restrictions
+  DROP CONSTRAINT IF EXISTS account_restrictions_version_check,
+  DROP COLUMN IF EXISTS version;

deploy/migrations/0131_account_freeze_visibility.up.sql

@@ -0,0 +1,37 @@
+-- A freeze/unfreeze is a viewer-visible user projection change. Version the
+-- durable fact so a claimed old nudge can never acknowledge a newer state.
+ALTER TABLE public.account_restrictions
+  ADD COLUMN version bigint DEFAULT 1 NOT NULL,
+  ADD CONSTRAINT account_restrictions_version_check CHECK (version > 0);
+
+-- updateUser has no pts. This coalesced queue is only a crash-safe online
+-- nudge; offline clients reconstruct the current restriction from the
+-- authoritative account_restrictions row during normal user hydration.
+CREATE TABLE public.account_freeze_notifications (
+  id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  target_user_id bigint NOT NULL REFERENCES public.users(id) ON DELETE CASCADE,
+  frozen_user_id bigint NOT NULL REFERENCES public.users(id) ON DELETE CASCADE,
+  version bigint NOT NULL,
+  frozen boolean NOT NULL,
+  status text DEFAULT 'pending' NOT NULL,
+  attempts integer DEFAULT 0 NOT NULL,
+  next_attempt_at timestamp with time zone DEFAULT now() NOT NULL,
+  lease_until timestamp with time zone,
+  last_error text DEFAULT '' NOT NULL,
+  created_at timestamp with time zone DEFAULT now() NOT NULL,
+  updated_at timestamp with time zone DEFAULT now() NOT NULL,
+  CONSTRAINT account_freeze_notifications_status_check
+    CHECK (status IN ('pending', 'dispatching', 'delivered')),
+  CONSTRAINT account_freeze_notifications_attempts_check CHECK (attempts >= 0),
+  CONSTRAINT account_freeze_notifications_version_check CHECK (version > 0),
+  CONSTRAINT account_freeze_notifications_not_self_check CHECK (target_user_id <> frozen_user_id),
+  UNIQUE (target_user_id, frozen_user_id)
+);
+
+CREATE INDEX account_freeze_notifications_ready_idx
+  ON public.account_freeze_notifications(next_attempt_at, id)
+  WHERE status = 'pending';
+
+CREATE INDEX account_freeze_notifications_lease_idx
+  ON public.account_freeze_notifications(lease_until, id)
+  WHERE status = 'dispatching';