From 149458d97ffbbe736e4bb2d23b22ab549d671cf1 Mon Sep 17 00:00:00 2001
From: shenlan <manbuzhe2009@qq.com>
Date: Sun, 5 Oct 2025 10:10:21 +0800
Subject: [PATCH] chore: remove legacy account migrations (#404)

---
 account/sql/20251001-migrate_to_uuid.md       |  94 +--
 account/sql/20251001-migrate_to_uuid.sql      | 210 -----
 account/sql/20251001-switch_uuid.sql          |  28 -
 account/sql/20251002-add-mfa-columns.sql      |   6 -
 .../sql/20251004-ensure-uuid-schema.down.sql  |  73 --
 .../sql/20251004-ensure-uuid-schema.up.sql    | 732 ------------------
 6 files changed, 43 insertions(+), 1100 deletions(-)
 delete mode 100644 account/sql/20251001-migrate_to_uuid.sql
 delete mode 100644 account/sql/20251001-switch_uuid.sql
 delete mode 100644 account/sql/20251002-add-mfa-columns.sql
 delete mode 100644 account/sql/20251004-ensure-uuid-schema.down.sql
 delete mode 100644 account/sql/20251004-ensure-uuid-schema.up.sql

diff --git a/account/sql/20251001-migrate_to_uuid.md b/account/sql/20251001-migrate_to_uuid.md
index 2a775de..14163e6 100644
--- a/account/sql/20251001-migrate_to_uuid.md
+++ b/account/sql/20251001-migrate_to_uuid.md
@@ -1,68 +1,60 @@
-# 前置准备
+# 历史 UUID 迁移指引（已归档）
 
-1. 确认扩展
-登录 PostgreSQL，执行： \dx 看看是否已经有 uuid-ossp 或 pgcrypto。
-如果没有，就执行： 
+> **说明**：项目已经统一改为直接使用 `schema.sql` 初始化数据库，不再提供单独的 UUID 迁移脚本。本指南仅保留作为旧环境排查的参考，若你是全新部署，可直接执行 `schema.sql` 并忽略本文件。
 
-CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
-或者：
-CREATE EXTENSION IF NOT EXISTS "pgcrypto";
+1. **确认扩展**  
+   登录 PostgreSQL，执行 `\dx` 检查是否已经启用了 `uuid-ossp` 或 `pgcrypto`。若没有，可执行：
 
+   ```sql
+   CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+   CREATE EXTENSION IF NOT EXISTS "pgcrypto";
+   ```
 
-⚠️ 推荐用 pgcrypto（函数是 gen_random_uuid()），更现代；
-如果你已经用了 uuid-ossp，脚本里的 uuid_generate_v4() 就能直接用。
+   推荐使用 `pgcrypto` 的 `gen_random_uuid()`；若历史库已启用 `uuid-ossp`，脚本中的 `uuid_generate_v4()` 亦可直接使用。
 
-2. 备份数据库
+2. **备份数据库**  
+   任何迁移前都应留存快照：
 
-这是最关键的保险：
+   ```bash
+   pg_dump -U <user> -d <dbname> > backup_before_uuid.sql
+   ```
 
-pg_dump -U <user> -d <dbname> > backup_before_uuid.sql
+3. **执行迁移脚本（仅旧项目）**  
+   旧版项目曾通过 `migrate_to_uuid.sql` 完成以下步骤：
+   - 新增 `uuid` 主键列并填充现有数据；
+   - 添加 `user_uuid` 外键字段，与旧的自增 `id` 并行；
+   - 删除旧的 `id`、`user_id` 列并将 `uuid` 设为主键。
 
-3. 执行迁移
+   如仍需在遗留环境执行，可根据上述逻辑自行编写脚本，或从历史提交中找回旧版 SQL。
 
-假设你的 schema 在 schema.sql 文件里，迁移脚本在 migrate_to_uuid.sql 文件里。
+4. **验证结果**  
+   迁移完成后进入数据库（`psql -U <user> -d <dbname>`）并检查：
 
-执行： psql -U <user> -d <dbname> -f migrate_to_uuid.sql
+   ```sql
+   \d users
+   \d identities
+   \d sessions
+   ```
 
+   预期结构示例：
 
-这个脚本会做三步：
+   - `users(uuid PRIMARY KEY, username, password, email, created_at …)`
+   - `identities(uuid PRIMARY KEY, user_uuid REFERENCES users(uuid), provider, external_id …)`
+   - `sessions(uuid PRIMARY KEY, user_uuid REFERENCES users(uuid), token, expires_at …)`
 
-- 新增 uuid 列，填充数据。
-- 新建 user_uuid 外键字段，保持和旧 id 外键并存。
-- 删除旧的 id、user_id，把 uuid 设为主键。
+   亦可通过信息架构核对外键：
 
-4. 验证结果
+   ```sql
+   SELECT constraint_name, table_name, column_name, foreign_table_name
+   FROM information_schema.key_column_usage
+   WHERE table_schema = 'public';
+   ```
 
-迁移后，进入数据库： psql -U <user> -d <dbname>
+5. **回滚策略**  
+   若迁移出现问题，可使用备份恢复：
 
-查看表结构：
+   ```bash
+   psql -U <user> -d <dbname> < backup_before_uuid.sql
+   ```
 
-\d users
-\d identities
-\d sessions
-
-
-应该看到：
-
-users(uuid PRIMARY KEY, username, password, email, created_at …)
-identities(uuid PRIMARY KEY, user_uuid REFERENCES users(uuid), provider, external_id …)
-sessions(uuid PRIMARY KEY, user_uuid REFERENCES users(uuid), token, expires_at …)
-
-再验证外键是否正确：
-
-SELECT constraint_name, table_name, column_name, foreign_table_name
-FROM information_schema.key_column_usage
-WHERE table_schema = 'public';
-
-回滚策略
-
-如果迁移出错，可以用之前的备份恢复：
-
-psql -U <user> -d <dbname> < backup_before_uuid.sql
-
-总结：
-
-先启用扩展
-再运行迁移脚本
-验证新表结构和外键
-保留备份，随时可回滚
+> **小结**：新部署只需运行 `schema.sql`。旧环境若要沿用 UUID 主键改造，可参考上述思路自行调整脚本，并务必在操作前备份。
diff --git a/account/sql/20251001-migrate_to_uuid.sql b/account/sql/20251001-migrate_to_uuid.sql
deleted file mode 100644
index 6a429d3..0000000
--- a/account/sql/20251001-migrate_to_uuid.sql
+++ /dev/null
@@ -1,210 +0,0 @@
-------------------------------------------------
--- STEP 0: 启用 UUID 扩展
-------------------------------------------------
--- 两种方式任选其一，推荐 pgcrypto（更现代）
--- 如果数据库还没装扩展，可以先运行 CREATE EXTENSION
-
--- 方式一：使用 uuid-ossp
-CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
-
--- 方式二：使用 pgcrypto
--- CREATE EXTENSION IF NOT EXISTS "pgcrypto";
-
--- 注意：
--- uuid-ossp 用 uuid_generate_v4()
--- pgcrypto 用 gen_random_uuid()
-
-------------------------------------------------
--- STEP 1: 平滑迁移（添加 UUID 字段并建立外键）
-------------------------------------------------
-
--- ========== Users ==========
-ALTER TABLE users
-    ADD COLUMN IF NOT EXISTS uuid UUID DEFAULT uuid_generate_v4();
-
-UPDATE users SET uuid = uuid_generate_v4() WHERE uuid IS NULL;
-
-ALTER TABLE users
-    ALTER COLUMN uuid SET NOT NULL;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'users'::regclass
-          AND conname = 'users_uuid_unique'
-    ) THEN
-        EXECUTE 'ALTER TABLE users ADD CONSTRAINT users_uuid_unique UNIQUE (uuid)';
-    END IF;
-END $$;
-
--- ========== Identities ==========
-ALTER TABLE identities
-    ADD COLUMN IF NOT EXISTS uuid UUID DEFAULT uuid_generate_v4();
-
-UPDATE identities SET uuid = uuid_generate_v4() WHERE uuid IS NULL;
-
-ALTER TABLE identities
-    ALTER COLUMN uuid SET NOT NULL;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'identities'::regclass
-          AND conname = 'identities_uuid_unique'
-    ) THEN
-        EXECUTE 'ALTER TABLE identities ADD CONSTRAINT identities_uuid_unique UNIQUE (uuid)';
-    END IF;
-END $$;
-
--- 新增 user_uuid 外键字段
-ALTER TABLE identities
-    ADD COLUMN IF NOT EXISTS user_uuid UUID;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_name = 'identities'
-          AND column_name = 'user_id'
-          AND table_schema = 'public'
-    ) THEN
-        EXECUTE 'UPDATE identities i SET user_uuid = u.uuid FROM users u WHERE i.user_id = u.id;';
-    END IF;
-END $$;
-
-ALTER TABLE identities
-    ALTER COLUMN user_uuid SET NOT NULL;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'identities'::regclass
-          AND conname = 'identities_user_uuid_fk'
-    ) THEN
-        EXECUTE 'ALTER TABLE identities ADD CONSTRAINT identities_user_uuid_fk FOREIGN KEY (user_uuid) REFERENCES users(uuid) ON DELETE CASCADE';
-    END IF;
-END $$;
-
--- ========== Sessions ==========
-ALTER TABLE sessions
-    ADD COLUMN IF NOT EXISTS uuid UUID DEFAULT uuid_generate_v4();
-
-UPDATE sessions SET uuid = uuid_generate_v4() WHERE uuid IS NULL;
-
-ALTER TABLE sessions
-    ALTER COLUMN uuid SET NOT NULL;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'sessions'::regclass
-          AND conname = 'sessions_uuid_unique'
-    ) THEN
-        EXECUTE 'ALTER TABLE sessions ADD CONSTRAINT sessions_uuid_unique UNIQUE (uuid)';
-    END IF;
-END $$;
-
--- 新增 user_uuid 外键字段
-ALTER TABLE sessions
-    ADD COLUMN IF NOT EXISTS user_uuid UUID;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_name = 'sessions'
-          AND column_name = 'user_id'
-          AND table_schema = 'public'
-    ) THEN
-        EXECUTE 'UPDATE sessions s SET user_uuid = u.uuid FROM users u WHERE s.user_id = u.id;';
-    END IF;
-END $$;
-
-ALTER TABLE sessions
-    ALTER COLUMN user_uuid SET NOT NULL;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'sessions'::regclass
-          AND conname = 'sessions_user_uuid_fk'
-    ) THEN
-        EXECUTE 'ALTER TABLE sessions ADD CONSTRAINT sessions_user_uuid_fk FOREIGN KEY (user_uuid) REFERENCES users(uuid) ON DELETE CASCADE';
-    END IF;
-END $$;
-
-
-------------------------------------------------
--- STEP 2: 清理（彻底切换到 UUID 主键）
-------------------------------------------------
-
--- 删除原有的主键约束
-ALTER TABLE users DROP CONSTRAINT IF EXISTS users_pkey;
-ALTER TABLE identities DROP CONSTRAINT IF EXISTS identities_pkey;
-ALTER TABLE sessions DROP CONSTRAINT IF EXISTS sessions_pkey;
-
--- 删除旧的 id 外键
-ALTER TABLE identities DROP CONSTRAINT IF EXISTS identities_user_id_fkey;
-ALTER TABLE sessions DROP CONSTRAINT IF EXISTS sessions_user_id_fkey;
-
--- 设置 uuid 为新的主键
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'users'::regclass
-          AND conname = 'users_pkey'
-    ) THEN
-        EXECUTE 'ALTER TABLE users ADD CONSTRAINT users_pkey PRIMARY KEY (uuid)';
-    END IF;
-END $$;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'identities'::regclass
-          AND conname = 'identities_pkey'
-    ) THEN
-        EXECUTE 'ALTER TABLE identities ADD CONSTRAINT identities_pkey PRIMARY KEY (uuid)';
-    END IF;
-END $$;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_constraint
-        WHERE conrelid = 'sessions'::regclass
-          AND conname = 'sessions_pkey'
-    ) THEN
-        EXECUTE 'ALTER TABLE sessions ADD CONSTRAINT sessions_pkey PRIMARY KEY (uuid)';
-    END IF;
-END $$;
-
--- 删除旧的 id 字段
-ALTER TABLE users DROP COLUMN IF EXISTS id;
-ALTER TABLE identities DROP COLUMN IF EXISTS id;
-ALTER TABLE sessions DROP COLUMN IF EXISTS id;
-
--- 删除旧的 user_id 外键字段
-ALTER TABLE identities DROP COLUMN IF EXISTS user_id;
-ALTER TABLE sessions DROP COLUMN IF EXISTS user_id;
-
-------------------------------------------------
--- Done: 所有表都只用 UUID 作为主键/外键
-------------------------------------------------
diff --git a/account/sql/20251001-switch_uuid.sql b/account/sql/20251001-switch_uuid.sql
deleted file mode 100644
index 703ca0a..0000000
--- a/account/sql/20251001-switch_uuid.sql
+++ /dev/null
@@ -1,28 +0,0 @@
-
-------------------------------------------------
--- STEP 2: 切换到 UUID-only
-------------------------------------------------
-
--- 删除旧外键（如果还在的话）
-ALTER TABLE identities DROP CONSTRAINT IF EXISTS identities_user_id_fkey;
-ALTER TABLE sessions DROP CONSTRAINT IF EXISTS sessions_user_id_fkey;
-
--- 删除旧主键
-ALTER TABLE users DROP CONSTRAINT IF EXISTS users_pkey;
-ALTER TABLE identities DROP CONSTRAINT IF EXISTS identities_pkey;
-ALTER TABLE sessions DROP CONSTRAINT IF EXISTS sessions_pkey;
-
--- 设置 uuid 为主键
-ALTER TABLE users ADD CONSTRAINT users_pkey PRIMARY KEY (uuid);
-ALTER TABLE identities ADD CONSTRAINT identities_pkey PRIMARY KEY (uuid);
-ALTER TABLE sessions ADD CONSTRAINT sessions_pkey PRIMARY KEY (uuid);
-
--- 删除旧 id 字段（如果还存在）
-ALTER TABLE users DROP COLUMN IF EXISTS id;
-ALTER TABLE identities DROP COLUMN IF EXISTS id;
-ALTER TABLE sessions DROP COLUMN IF EXISTS id;
-
--- 删除旧的 user_id 外键字段（如果还存在）
-ALTER TABLE identities DROP COLUMN IF EXISTS user_id;
-ALTER TABLE sessions DROP COLUMN IF EXISTS user_id;
-
diff --git a/account/sql/20251002-add-mfa-columns.sql b/account/sql/20251002-add-mfa-columns.sql
deleted file mode 100644
index 615b56c..0000000
--- a/account/sql/20251002-add-mfa-columns.sql
+++ /dev/null
@@ -1,6 +0,0 @@
-ALTER TABLE users
-    ADD COLUMN IF NOT EXISTS mfa_totp_secret TEXT,
-    ADD COLUMN IF NOT EXISTS mfa_enabled BOOLEAN NOT NULL DEFAULT FALSE,
-    ADD COLUMN IF NOT EXISTS mfa_secret_issued_at TIMESTAMPTZ,
-    ADD COLUMN IF NOT EXISTS mfa_confirmed_at TIMESTAMPTZ,
-    ADD COLUMN IF NOT EXISTS updated_at TIMESTAMPTZ DEFAULT now();
diff --git a/account/sql/20251004-ensure-uuid-schema.down.sql b/account/sql/20251004-ensure-uuid-schema.down.sql
deleted file mode 100644
index e1de2de..0000000
--- a/account/sql/20251004-ensure-uuid-schema.down.sql
+++ /dev/null
@@ -1,73 +0,0 @@
--- Drop trigger before removing supporting function
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM pg_trigger
-        WHERE tgname = 'trg_users_set_updated_at'
-          AND tgrelid = 'public.users'::regclass
-    ) THEN
-        DROP TRIGGER trg_users_set_updated_at ON public.users;
-    END IF;
-END
-$$;
-
-DROP FUNCTION IF EXISTS public.set_updated_at();
-
--- Drop indexes introduced by the migration
-DROP INDEX IF EXISTS public.idx_sessions_user_uuid;
-DROP INDEX IF EXISTS public.idx_identities_provider;
-DROP INDEX IF EXISTS public.idx_identities_user_uuid;
-
--- Drop foreign keys
-ALTER TABLE public.sessions
-    DROP CONSTRAINT IF EXISTS sessions_user_fk;
-
-ALTER TABLE public.identities
-    DROP CONSTRAINT IF EXISTS identities_user_fk;
-
--- Drop unique constraints
-ALTER TABLE public.identities
-    DROP CONSTRAINT IF EXISTS identities_provider_external_id_uk;
-
-ALTER TABLE public.users
-    DROP CONSTRAINT IF EXISTS users_username_uk;
-
-ALTER TABLE public.users
-    DROP CONSTRAINT IF EXISTS users_email_uk;
-
--- Remove generated column but retain supporting timestamps
-ALTER TABLE public.users
-    DROP COLUMN IF EXISTS email_verified;
-
-
-ALTER TABLE public.users
-    ALTER COLUMN updated_at DROP DEFAULT;
-
-
--- Restore uuid columns to neutral defaults
-ALTER TABLE public.sessions
-    ALTER COLUMN uuid DROP DEFAULT,
-    ALTER COLUMN uuid DROP NOT NULL;
-
-ALTER TABLE public.identities
-    ALTER COLUMN uuid DROP DEFAULT,
-    ALTER COLUMN uuid DROP NOT NULL,
-    ALTER COLUMN user_uuid DROP NOT NULL;
-
-ALTER TABLE public.users
-    ALTER COLUMN uuid DROP DEFAULT,
-    ALTER COLUMN uuid DROP NOT NULL;
-
-ALTER TABLE public.sessions
-    ALTER COLUMN user_uuid DROP NOT NULL;
-
--- Drop primary keys added by the migration
-ALTER TABLE public.sessions
-    DROP CONSTRAINT IF EXISTS sessions_pkey;
-
-ALTER TABLE public.identities
-    DROP CONSTRAINT IF EXISTS identities_pkey;
-
-ALTER TABLE public.users
-    DROP CONSTRAINT IF EXISTS users_pkey;
diff --git a/account/sql/20251004-ensure-uuid-schema.up.sql b/account/sql/20251004-ensure-uuid-schema.up.sql
deleted file mode 100644
index 688844d..0000000
--- a/account/sql/20251004-ensure-uuid-schema.up.sql
+++ /dev/null
@@ -1,732 +0,0 @@
-CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
-CREATE EXTENSION IF NOT EXISTS "pgcrypto";
-
--- USERS ------------------------------------------------------------------
-ALTER TABLE public.users
-    ADD COLUMN IF NOT EXISTS uuid uuid;
-
-UPDATE public.users
-SET uuid = gen_random_uuid()
-WHERE uuid IS NULL;
-
-ALTER TABLE public.users
-    ALTER COLUMN uuid TYPE uuid USING uuid::uuid;
-
-ALTER TABLE public.users
-    ALTER COLUMN uuid SET DEFAULT gen_random_uuid();
-
-ALTER TABLE public.users
-    ALTER COLUMN uuid SET NOT NULL;
-
--- Ensure uuid columns are of the UUID type
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'users'
-          AND column_name = 'uuid'
-          AND udt_name <> 'uuid'
-    ) THEN
-        ALTER TABLE public.users
-            ALTER COLUMN uuid TYPE uuid USING uuid::uuid;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'identities'
-          AND column_name = 'uuid'
-          AND udt_name <> 'uuid'
-    ) THEN
-        ALTER TABLE public.identities
-            ALTER COLUMN uuid TYPE uuid USING uuid::uuid;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'identities'
-          AND column_name = 'user_uuid'
-          AND udt_name <> 'uuid'
-    ) THEN
-        ALTER TABLE public.identities
-            ALTER COLUMN user_uuid TYPE uuid USING user_uuid::uuid;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'sessions'
-          AND column_name = 'uuid'
-          AND udt_name <> 'uuid'
-    ) THEN
-        ALTER TABLE public.sessions
-            ALTER COLUMN uuid TYPE uuid USING uuid::uuid;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'sessions'
-          AND column_name = 'user_uuid'
-          AND udt_name <> 'uuid'
-    ) THEN
-        ALTER TABLE public.sessions
-            ALTER COLUMN user_uuid TYPE uuid USING user_uuid::uuid;
-    END IF;
-END
-$$;
-
--- Fill missing UUIDs before enforcing constraints
-UPDATE public.users SET uuid = gen_random_uuid() WHERE uuid IS NULL;
-UPDATE public.identities SET uuid = gen_random_uuid() WHERE uuid IS NULL;
-UPDATE public.sessions SET uuid = gen_random_uuid() WHERE uuid IS NULL;
-
--- Ensure NOT NULL on uuid columns
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'users'
-          AND column_name = 'uuid'
-          AND is_nullable = 'YES'
-    ) THEN
-        ALTER TABLE public.users
-            ALTER COLUMN uuid SET NOT NULL;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'identities'
-          AND column_name = 'uuid'
-          AND is_nullable = 'YES'
-    ) THEN
-        ALTER TABLE public.identities
-            ALTER COLUMN uuid SET NOT NULL;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'sessions'
-          AND column_name = 'uuid'
-          AND is_nullable = 'YES'
-    ) THEN
-        ALTER TABLE public.sessions
-            ALTER COLUMN uuid SET NOT NULL;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'identities'
-          AND column_name = 'user_uuid'
-          AND is_nullable = 'YES'
-    ) THEN
-        ALTER TABLE public.identities
-            ALTER COLUMN user_uuid SET NOT NULL;
-    END IF;
-END
-$$;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'sessions'
-          AND column_name = 'user_uuid'
-          AND is_nullable = 'YES'
-    ) THEN
-        ALTER TABLE public.sessions
-            ALTER COLUMN user_uuid SET NOT NULL;
-    END IF;
-END
-$$;
-
--- Ensure defaults for uuid columns
-DO $$
-DECLARE
-    current_default text;
-    target_attnum int;
-BEGIN
-    SELECT attnum INTO target_attnum
-    FROM pg_attribute
-    WHERE attrelid = 'public.users'::regclass
-      AND attname = 'uuid'
-      AND NOT attisdropped;
-
-    IF target_attnum IS NOT NULL THEN
-        SELECT pg_get_expr(adbin, adrelid)
-        INTO current_default
-        FROM pg_attrdef
-        WHERE adrelid = 'public.users'::regclass
-          AND adnum = target_attnum;
-
-        IF current_default IS DISTINCT FROM 'gen_random_uuid()' THEN
-            ALTER TABLE public.users
-                ALTER COLUMN uuid SET DEFAULT gen_random_uuid();
-        END IF;
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    current_default text;
-    target_attnum int;
-BEGIN
-    SELECT attnum INTO target_attnum
-    FROM pg_attribute
-    WHERE attrelid = 'public.identities'::regclass
-      AND attname = 'uuid'
-      AND NOT attisdropped;
-
-    IF target_attnum IS NOT NULL THEN
-        SELECT pg_get_expr(adbin, adrelid)
-        INTO current_default
-        FROM pg_attrdef
-        WHERE adrelid = 'public.identities'::regclass
-          AND adnum = target_attnum;
-
-        IF current_default IS DISTINCT FROM 'gen_random_uuid()' THEN
-            ALTER TABLE public.identities
-                ALTER COLUMN uuid SET DEFAULT gen_random_uuid();
-        END IF;
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    current_default text;
-    target_attnum int;
-BEGIN
-    SELECT attnum INTO target_attnum
-    FROM pg_attribute
-    WHERE attrelid = 'public.sessions'::regclass
-      AND attname = 'uuid'
-      AND NOT attisdropped;
-
-    IF target_attnum IS NOT NULL THEN
-        SELECT pg_get_expr(adbin, adrelid)
-        INTO current_default
-        FROM pg_attrdef
-        WHERE adrelid = 'public.sessions'::regclass
-          AND adnum = target_attnum;
-
-        IF current_default IS DISTINCT FROM 'gen_random_uuid()' THEN
-            ALTER TABLE public.sessions
-                ALTER COLUMN uuid SET DEFAULT gen_random_uuid();
-        END IF;
-    END IF;
-END
-$$;
-
-
-ALTER TABLE public.users
-    ADD COLUMN IF NOT EXISTS email_verified_at timestamptz;
-
-ALTER TABLE public.users
-    ADD COLUMN IF NOT EXISTS updated_at timestamptz;
-
-UPDATE public.users
-
-SET updated_at = COALESCE(updated_at, now());
-
-DO $$
-DECLARE
-    target_attnum int;
-    current_default text;
-BEGIN
-    SELECT attnum INTO target_attnum
-    FROM pg_attribute
-    WHERE attrelid = 'public.users'::regclass
-      AND attname = 'updated_at'
-      AND NOT attisdropped;
-
-    IF target_attnum IS NOT NULL THEN
-        SELECT pg_get_expr(adbin, adrelid)
-        INTO current_default
-        FROM pg_attrdef
-        WHERE adrelid = 'public.users'::regclass
-          AND adnum = target_attnum;
-
-        IF current_default IS DISTINCT FROM 'now()' THEN
-            ALTER TABLE public.users
-                ALTER COLUMN updated_at SET DEFAULT now();
-        END IF;
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    att_generated char(1);
-BEGIN
-    SELECT a.attgenerated
-    INTO att_generated
-    FROM pg_attribute a
-    WHERE a.attrelid = 'public.users'::regclass
-      AND a.attname = 'email_verified'
-      AND NOT a.attisdropped;
-
-    IF att_generated IS NULL THEN
-        EXECUTE 'ALTER TABLE public.users ADD COLUMN email_verified boolean GENERATED ALWAYS AS (email_verified_at IS NOT NULL) STORED';
-    ELSIF att_generated <> 's' THEN
-        EXECUTE 'ALTER TABLE public.users DROP COLUMN email_verified';
-        EXECUTE 'ALTER TABLE public.users ADD COLUMN email_verified boolean GENERATED ALWAYS AS (email_verified_at IS NOT NULL) STORED';
-    END IF;
-END
-$$;
-
-CREATE OR REPLACE FUNCTION public.set_updated_at()
-RETURNS trigger
-LANGUAGE plpgsql
-AS $$
-BEGIN
-    NEW.updated_at := now();
-    RETURN NEW;
-END;
-$$;
-
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1
-        FROM pg_trigger
-        WHERE tgname = 'trg_users_set_updated_at'
-          AND tgrelid = 'public.users'::regclass
-          AND NOT tgisinternal
-    ) THEN
-        CREATE TRIGGER trg_users_set_updated_at
-        BEFORE UPDATE ON public.users
-        FOR EACH ROW
-        EXECUTE FUNCTION public.set_updated_at();
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    pk_name text;
-BEGIN
-    SELECT conname INTO pk_name
-    FROM pg_constraint
-    WHERE conrelid = 'public.users'::regclass
-      AND contype = 'p'
-    LIMIT 1;
-
-    IF pk_name IS NULL THEN
-        ALTER TABLE public.users
-            ADD CONSTRAINT users_pkey PRIMARY KEY (uuid);
-    ELSIF pk_name <> 'users_pkey' THEN
-        EXECUTE format('ALTER TABLE public.users RENAME CONSTRAINT %I TO users_pkey', pk_name);
-    END IF;
-END
-$$;
-
-
-DO $$
-DECLARE
-    constraint_name text;
-    email_att smallint;
-BEGIN
-    SELECT attnum INTO email_att
-    FROM pg_attribute
-    WHERE attrelid = 'public.users'::regclass
-      AND attname = 'email'
-      AND NOT attisdropped;
-
-    IF email_att IS NOT NULL THEN
-        SELECT conname INTO constraint_name
-        FROM pg_constraint
-        WHERE conrelid = 'public.users'::regclass
-          AND contype = 'u'
-          AND conkey = ARRAY[email_att]
-        LIMIT 1;
-
-        IF constraint_name IS NULL THEN
-            ALTER TABLE public.users
-                ADD CONSTRAINT users_email_uk UNIQUE (email);
-        ELSIF constraint_name <> 'users_email_uk' THEN
-            EXECUTE format('ALTER TABLE public.users RENAME CONSTRAINT %I TO users_email_uk', constraint_name);
-        END IF;
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    constraint_name text;
-    username_att smallint;
-BEGIN
-    SELECT attnum INTO username_att
-    FROM pg_attribute
-    WHERE attrelid = 'public.users'::regclass
-      AND attname = 'username'
-      AND NOT attisdropped;
-
-    IF username_att IS NOT NULL THEN
-        SELECT conname INTO constraint_name
-        FROM pg_constraint
-        WHERE conrelid = 'public.users'::regclass
-          AND contype = 'u'
-          AND conkey = ARRAY[username_att]
-        LIMIT 1;
-
-        IF constraint_name IS NULL THEN
-            ALTER TABLE public.users
-                ADD CONSTRAINT users_username_uk UNIQUE (username);
-        ELSIF constraint_name <> 'users_username_uk' THEN
-            EXECUTE format('ALTER TABLE public.users RENAME CONSTRAINT %I TO users_username_uk', constraint_name);
-        END IF;
-    END IF;
-END
-$$;
-
-
--- IDENTITIES --------------------------------------------------------------
-ALTER TABLE public.identities
-    ADD COLUMN IF NOT EXISTS uuid uuid;
-
-UPDATE public.identities
-SET uuid = gen_random_uuid()
-WHERE uuid IS NULL;
-
-ALTER TABLE public.identities
-    ALTER COLUMN uuid TYPE uuid USING uuid::uuid;
-
-ALTER TABLE public.identities
-    ALTER COLUMN uuid SET DEFAULT gen_random_uuid();
-
-ALTER TABLE public.identities
-    ALTER COLUMN uuid SET NOT NULL;
-
-ALTER TABLE public.identities
-    ADD COLUMN IF NOT EXISTS user_uuid uuid;
-
-ALTER TABLE public.identities
-    ALTER COLUMN user_uuid TYPE uuid USING user_uuid::uuid;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'identities'
-          AND column_name = 'user_id'
-    ) THEN
-        UPDATE public.identities i
-        SET user_uuid = u.uuid
-        FROM public.users u
-        WHERE i.user_uuid IS NULL
-          AND u.id = i.user_id;
-    END IF;
-END
-$$;
-
-ALTER TABLE public.identities
-    ALTER COLUMN user_uuid SET NOT NULL;
-
-DO $$
-DECLARE
-    pk_name text;
-BEGIN
-    SELECT conname INTO pk_name
-    FROM pg_constraint
-    WHERE conrelid = 'public.identities'::regclass
-      AND contype = 'p'
-    LIMIT 1;
-
-    IF pk_name IS NULL THEN
-        ALTER TABLE public.identities
-            ADD CONSTRAINT identities_pkey PRIMARY KEY (uuid);
-    ELSIF pk_name <> 'identities_pkey' THEN
-        EXECUTE format('ALTER TABLE public.identities RENAME CONSTRAINT %I TO identities_pkey', pk_name);
-    END IF;
-END
-$$;
-
-
-DO $$
-DECLARE
-    constraint_name text;
-    provider_att smallint;
-    external_att smallint;
-BEGIN
-    SELECT attnum INTO provider_att
-    FROM pg_attribute
-    WHERE attrelid = 'public.identities'::regclass
-      AND attname = 'provider'
-      AND NOT attisdropped;
-
-    SELECT attnum INTO external_att
-    FROM pg_attribute
-    WHERE attrelid = 'public.identities'::regclass
-      AND attname = 'external_id'
-      AND NOT attisdropped;
-
-    IF provider_att IS NOT NULL AND external_att IS NOT NULL THEN
-        SELECT conname INTO constraint_name
-        FROM pg_constraint
-        WHERE conrelid = 'public.identities'::regclass
-          AND contype = 'u'
-          AND conkey = ARRAY[provider_att, external_att]
-        LIMIT 1;
-
-        IF constraint_name IS NULL THEN
-            ALTER TABLE public.identities
-                ADD CONSTRAINT identities_provider_external_id_uk UNIQUE (provider, external_id);
-        ELSIF constraint_name <> 'identities_provider_external_id_uk' THEN
-            EXECUTE format('ALTER TABLE public.identities RENAME CONSTRAINT %I TO identities_provider_external_id_uk', constraint_name);
-        END IF;
-    END IF;
-END
-$$;
-
-
-DO $$
-DECLARE
-    fk_name text;
-BEGIN
-    SELECT conname INTO fk_name
-    FROM pg_constraint
-    WHERE conrelid = 'public.identities'::regclass
-      AND contype = 'f'
-      AND confrelid = 'public.users'::regclass
-    LIMIT 1;
-
-    IF fk_name IS NULL THEN
-        ALTER TABLE public.identities
-            ADD CONSTRAINT identities_user_fk FOREIGN KEY (user_uuid)
-                REFERENCES public.users(uuid) ON DELETE CASCADE;
-    ELSIF fk_name <> 'identities_user_fk' THEN
-        EXECUTE format('ALTER TABLE public.identities RENAME CONSTRAINT %I TO identities_user_fk', fk_name);
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    idx_name text;
-    att smallint;
-BEGIN
-    SELECT attnum INTO att
-
-    FROM pg_attribute
-    WHERE attrelid = 'public.identities'::regclass
-      AND attname = 'user_uuid'
-      AND NOT attisdropped;
-
-
-    IF att IS NOT NULL THEN
-
-        SELECT cls.relname INTO idx_name
-        FROM pg_index idx
-        JOIN pg_class cls ON cls.oid = idx.indexrelid
-        WHERE idx.indrelid = 'public.identities'::regclass
-          AND idx.indisunique = FALSE
-          AND idx.indkey = ARRAY[att]::int2vector
-        LIMIT 1;
-
-        IF idx_name IS NULL THEN
-            CREATE INDEX IF NOT EXISTS idx_identities_user_uuid ON public.identities (user_uuid);
-        ELSIF idx_name <> 'idx_identities_user_uuid' THEN
-            EXECUTE format('ALTER INDEX %I RENAME TO idx_identities_user_uuid', idx_name);
-        END IF;
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    idx_name text;
-    att smallint;
-BEGIN
-    SELECT attnum INTO att
-
-    FROM pg_attribute
-    WHERE attrelid = 'public.identities'::regclass
-      AND attname = 'provider'
-      AND NOT attisdropped;
-
-
-    IF att IS NOT NULL THEN
-        SELECT cls.relname INTO idx_name
-        FROM pg_index idx
-        JOIN pg_class cls ON cls.oid = idx.indexrelid
-        WHERE idx.indrelid = 'public.identities'::regclass
-          AND idx.indisunique = FALSE
-          AND idx.indkey = ARRAY[att]::int2vector
-
-        LIMIT 1;
-
-        IF idx_name IS NULL THEN
-            CREATE INDEX IF NOT EXISTS idx_identities_provider ON public.identities (provider);
-        ELSIF idx_name <> 'idx_identities_provider' THEN
-            EXECUTE format('ALTER INDEX %I RENAME TO idx_identities_provider', idx_name);
-        END IF;
-    END IF;
-END
-$$;
-
--- SESSIONS ----------------------------------------------------------------
-ALTER TABLE public.sessions
-    ADD COLUMN IF NOT EXISTS uuid uuid;
-
-UPDATE public.sessions
-SET uuid = gen_random_uuid()
-WHERE uuid IS NULL;
-
-ALTER TABLE public.sessions
-    ALTER COLUMN uuid TYPE uuid USING uuid::uuid;
-
-ALTER TABLE public.sessions
-    ALTER COLUMN uuid SET DEFAULT gen_random_uuid();
-
-ALTER TABLE public.sessions
-    ALTER COLUMN uuid SET NOT NULL;
-
-ALTER TABLE public.sessions
-    ADD COLUMN IF NOT EXISTS user_uuid uuid;
-
-ALTER TABLE public.sessions
-    ALTER COLUMN user_uuid TYPE uuid USING user_uuid::uuid;
-
-DO $$
-BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_schema = 'public'
-          AND table_name = 'sessions'
-          AND column_name = 'user_id'
-    ) THEN
-        UPDATE public.sessions s
-        SET user_uuid = u.uuid
-        FROM public.users u
-        WHERE s.user_uuid IS NULL
-          AND u.id = s.user_id;
-    END IF;
-END
-$$;
-
-ALTER TABLE public.sessions
-    ALTER COLUMN user_uuid SET NOT NULL;
-
-DO $$
-DECLARE
-    pk_name text;
-BEGIN
-    SELECT conname INTO pk_name
-    FROM pg_constraint
-    WHERE conrelid = 'public.sessions'::regclass
-      AND contype = 'p'
-    LIMIT 1;
-
-    IF pk_name IS NULL THEN
-        ALTER TABLE public.sessions
-            ADD CONSTRAINT sessions_pkey PRIMARY KEY (uuid);
-    ELSIF pk_name <> 'sessions_pkey' THEN
-        EXECUTE format('ALTER TABLE public.sessions RENAME CONSTRAINT %I TO sessions_pkey', pk_name);
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    fk_name text;
-BEGIN
-    SELECT conname INTO fk_name
-    FROM pg_constraint
-    WHERE conrelid = 'public.sessions'::regclass
-      AND contype = 'f'
-      AND confrelid = 'public.users'::regclass
-    LIMIT 1;
-
-    IF fk_name IS NULL THEN
-        ALTER TABLE public.sessions
-            ADD CONSTRAINT sessions_user_fk FOREIGN KEY (user_uuid)
-                REFERENCES public.users(uuid) ON DELETE CASCADE;
-    ELSIF fk_name <> 'sessions_user_fk' THEN
-        EXECUTE format('ALTER TABLE public.sessions RENAME CONSTRAINT %I TO sessions_user_fk', fk_name);
-    END IF;
-END
-$$;
-
-DO $$
-DECLARE
-    idx_name text;
-    att smallint;
-BEGIN
-    SELECT attnum INTO att
-
-    FROM pg_attribute
-    WHERE attrelid = 'public.sessions'::regclass
-      AND attname = 'user_uuid'
-      AND NOT attisdropped;
-
-
-    IF att IS NOT NULL THEN
-
-        SELECT cls.relname INTO idx_name
-        FROM pg_index idx
-        JOIN pg_class cls ON cls.oid = idx.indexrelid
-        WHERE idx.indrelid = 'public.sessions'::regclass
-          AND idx.indisunique = FALSE
-          AND idx.indkey = ARRAY[att]::int2vector
-
-        LIMIT 1;
-
-        IF idx_name IS NULL THEN
-            CREATE INDEX IF NOT EXISTS idx_sessions_user_uuid ON public.sessions (user_uuid);
-        ELSIF idx_name <> 'idx_sessions_user_uuid' THEN
-            EXECUTE format('ALTER INDEX %I RENAME TO idx_sessions_user_uuid', idx_name);
-        END IF;
-    END IF;
-END
-$$;