feat: sync ephemeral transient messages

Sync telesrv 570ccf8 (feat(ephemeral): implement Layer 228 transient messages).

Skipped telesrv docs changes per public sync rules; normalized the public appearance seed label.

deploy/migrations/0120_bot_api_ephemeral_payload.down.sql

@@ -0,0 +1,13 @@
+DELETE FROM public.bot_api_updates
+WHERE ephemeral_payload IS NOT NULL;
+
+DROP INDEX IF EXISTS public.bot_api_updates_ephemeral_version_unique;
+DROP INDEX IF EXISTS public.bot_api_updates_message_source_unique;
+
+ALTER TABLE public.bot_api_updates
+    DROP CONSTRAINT bot_api_updates_ephemeral_shape_check,
+    DROP COLUMN ephemeral_payload;
+
+CREATE UNIQUE INDEX bot_api_updates_message_source_unique
+    ON public.bot_api_updates (bot_user_id, update_kind, peer_type, peer_id, message_id, source_pts)
+    WHERE update_kind IN ('message', 'edited_message');

deploy/migrations/0120_bot_api_ephemeral_payload.up.sql

@@ -0,0 +1,61 @@
+ALTER TABLE public.bot_api_updates
+    ADD COLUMN ephemeral_payload jsonb;
+
+ALTER TABLE public.bot_api_updates
+    ADD CONSTRAINT bot_api_updates_ephemeral_shape_check CHECK (
+        ephemeral_payload IS NULL
+        OR (
+            peer_type = 'channel'
+            AND peer_id > 0
+            AND message_id > 0
+            AND source_pts = 0
+            AND jsonb_typeof(ephemeral_payload) = 'object'
+            AND jsonb_typeof(ephemeral_payload -> 'Message') = 'object'
+            AND (ephemeral_payload #>> '{Message,ID}') IS NOT NULL
+            AND (ephemeral_payload #>> '{Message,Peer,Type}') IS NOT NULL
+            AND (ephemeral_payload #>> '{Message,Peer,ID}') IS NOT NULL
+            AND (ephemeral_payload #>> '{Message,SenderUserID}') IS NOT NULL
+            AND (ephemeral_payload #>> '{Message,ReceiverUserID}') IS NOT NULL
+            AND (ephemeral_payload #>> '{Message,Version}') IS NOT NULL
+            AND NOT ((ephemeral_payload -> 'Message') ?| ARRAY[
+                'RandomID', 'OriginDevice', 'PayloadHash', 'CreatedAt', 'Deleted'
+            ])
+            AND (
+                NOT (ephemeral_payload ? 'ReplyTo')
+                OR (
+                    jsonb_typeof(ephemeral_payload -> 'ReplyTo') = 'object'
+                    AND NOT ((ephemeral_payload -> 'ReplyTo') ?| ARRAY[
+                        'RandomID', 'OriginDevice', 'PayloadHash', 'CreatedAt', 'Deleted'
+                    ])
+                )
+            )
+            AND (ephemeral_payload #>> '{Message,ID}')::integer = message_id
+            AND (ephemeral_payload #>> '{Message,Peer,Type}') = peer_type
+            AND (ephemeral_payload #>> '{Message,Peer,ID}')::bigint = peer_id
+            AND (
+                (update_kind = 'callback_query'
+                    AND (ephemeral_payload #>> '{Message,SenderUserID}')::bigint = bot_user_id)
+                OR
+                (update_kind IN ('message', 'edited_message')
+                    AND (ephemeral_payload #>> '{Message,ReceiverUserID}')::bigint = bot_user_id)
+            )
+            AND (ephemeral_payload #>> '{Message,Version}')::bigint > 0
+        )
+    );
+
+DROP INDEX public.bot_api_updates_message_source_unique;
+
+CREATE UNIQUE INDEX bot_api_updates_message_source_unique
+    ON public.bot_api_updates (bot_user_id, update_kind, peer_type, peer_id, message_id, source_pts)
+    WHERE update_kind IN ('message', 'edited_message') AND ephemeral_payload IS NULL;
+
+CREATE UNIQUE INDEX bot_api_updates_ephemeral_version_unique
+    ON public.bot_api_updates (
+        bot_user_id,
+        update_kind,
+        peer_type,
+        peer_id,
+        message_id,
+        ((ephemeral_payload #>> '{Message,Version}')::bigint)
+    )
+    WHERE update_kind IN ('message', 'edited_message') AND ephemeral_payload IS NOT NULL;

deploy/migrations/0121_ephemeral_abuse_reports.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS public.ephemeral_abuse_reports;

deploy/migrations/0121_ephemeral_abuse_reports.up.sql

@@ -0,0 +1,23 @@
+CREATE TABLE public.ephemeral_abuse_reports (
+    id bigserial PRIMARY KEY,
+    reporter_user_id bigint NOT NULL CHECK (reporter_user_id > 0),
+    channel_id bigint NOT NULL CHECK (channel_id > 0),
+    ephemeral_message_id integer NOT NULL CHECK (ephemeral_message_id > 0),
+    sender_user_id bigint NOT NULL CHECK (sender_user_id > 0),
+    receiver_user_id bigint NOT NULL CHECK (receiver_user_id = reporter_user_id),
+    report_option text NOT NULL CHECK (length(report_option) BETWEEN 1 AND 64),
+    report_comment text NOT NULL DEFAULT '' CHECK (length(report_comment) <= 4096),
+    comment_hash bytea NOT NULL CHECK (octet_length(comment_hash) = 32),
+    payload_hash bytea NOT NULL CHECK (octet_length(payload_hash) = 32),
+    evidence jsonb NOT NULL CHECK (jsonb_typeof(evidence) = 'object'),
+    created_at timestamptz NOT NULL,
+    CONSTRAINT ephemeral_abuse_reports_idempotency UNIQUE (
+        reporter_user_id, channel_id, ephemeral_message_id, report_option, comment_hash
+    )
+);
+
+CREATE INDEX ephemeral_abuse_reports_created_at_idx
+    ON public.ephemeral_abuse_reports (created_at DESC, id DESC);
+
+CREATE INDEX ephemeral_abuse_reports_sender_created_idx
+    ON public.ephemeral_abuse_reports (sender_user_id, created_at DESC, id DESC);