Initial open source release

deploy/migrations/0008_user_id_sequence_base.up.sql

@@ -0,0 +1,10 @@
+-- 0008_user_id_sequence_base: move ordinary user ids to the agreed timestamp range.
+--
+-- Base: 2026-06-01 00:00:00 Asia/Shanghai => Unix seconds 1780243200.
+-- Existing users keep their ids; the next generated id is at least this base.
+
+SELECT setval(
+    pg_get_serial_sequence('users', 'id'),
+    GREATEST((SELECT COALESCE(MAX(id), 0) FROM users), 1780243199),
+    true
+);