refactor(migrations): consolidate schema into initial baseline

Co-authored-by: Codex <noreply@openai.com>

backend/crates/gateway-store/tests/postgres/mod.rs

@@ -156,7 +156,7 @@ async fn connect_and_migrate_should_apply_all_migrations_once_and_reopen_cleanly
     .expect("drop migration test database");
     admin.close().await;
 
-    assert_eq!((first_table_count, migration_count), (10, 4));
+    assert_eq!((first_table_count, migration_count), (10, 1));
     assert_eq!(response_id_types, ["bytea", "bytea"]);
     assert!(!raw_response_id_index_exists);
 }

backend/migrations/.frozen-sha256

@@ -1,4 +1 @@
-54be07512951a561391b6e611355a1bfc119d82363253fb9bbdb225c9e3e39bb  0001_initial.sql
-f480ac4cb70f6963eee71c0b8a67777ebb492f85501c90ebe7544bee0b2c0525  0002_remove_account_cooldown.sql
-5cf5b5387c66b4d437d79c002cec46cb85196789060fa87c39e97a382487cac9  0004_fix_quota_limit_reached_null.sql
-a3f236d558e7598f69277520458c801ee43130f7704ca25455df468cf8899ff2  0003_materialize_quota_limit_reached.sql
+609d455f410f7be362bcdce841630728aaf2681f5cd6b2a6012529e5f8b8b1f6  0001_initial.sql

backend/migrations/0001_initial.sql

@@ -131,9 +131,8 @@ create table provider_accounts (
   next_refresh_at timestamptz,
   enabled boolean not null default true,
   availability text not null default 'unknown',
-  availability_reason text,
-  cooldown_until timestamptz,
   provider_quota_json jsonb,
+  quota_limit_reached boolean not null default false,
   availability_observed_at timestamptz not null,
   quota_observed_at timestamptz,
   created_at timestamptz not null,
@@ -163,23 +162,12 @@ create table provider_accounts (
     availability in (
       'unknown',
       'ready',
-      'cooldown',
       'quota_exhausted',
       'expired',
       'banned',
       'invalid'
     )
   ),
-  constraint provider_accounts_cooldown_ck check (
-    (
-      availability != 'cooldown'
-      or cooldown_until is not null
-    )
-    and (
-      cooldown_until is null
-      or availability in ('cooldown', 'quota_exhausted')
-    )
-  ),
   constraint provider_accounts_time_ck check (
     created_at <= updated_at
     and availability_observed_at <= updated_at
@@ -196,7 +184,7 @@ create unique index provider_accounts_upstream_identity_uq
 create index provider_accounts_runtime_idx
   on provider_accounts (provider_kind, enabled, id);
 create index provider_accounts_availability_idx
-  on provider_accounts (availability, cooldown_until, id);
+  on provider_accounts (availability, id);
 create index provider_accounts_access_expiry_idx
   on provider_accounts (access_token_expires_at, id);
 create index provider_accounts_refresh_due_idx
@@ -235,8 +223,6 @@ create table model_requests (
   outcome text not null default 'running',
   client_status_code integer,
   upstream_status_code integer,
-  -- Provider response IDs are opaque JSON strings. Bytes preserve embedded NUL
-  -- and avoid imposing PostgreSQL text-index limits on protocol handles.
   client_response_id bytea,
   upstream_request_id text,
   upstream_response_id bytea,
@@ -438,6 +424,7 @@ create index model_requests_running_deadline_idx
 create index model_requests_retention_idx
   on model_requests (completed_at)
   where outcome <> 'running';
+
 -- 运行期警告与错误事件。
 create table ops_events (
   id text primary key,
@@ -691,11 +678,9 @@ create unique index backup_records_active_uq
 create unique index backup_records_object_key_uq
   on backup_records (object_key)
   where object_key is not null;
--- 同时服务 retentionDays 与 retentionCount。
 create index backup_records_scheduled_completed_idx
   on backup_records (completed_at desc, id desc)
   where trigger_kind = 'scheduled' and status = 'completed';
--- 可清理记录（expires_at 已到期且非活跃）的扫描索引。
 create index backup_records_retention_idx
   on backup_records (expires_at)
   where expires_at is not null and status in ('completed', 'failed');

backend/migrations/0002_remove_account_cooldown.sql

@@ -1,43 +0,0 @@
--- 移除账号级 cooldown 状态模型（照 v2 语义：429 限流不进 availability，由 quota 数据驱动）。
---
--- 存量迁移：
---   - availability='cooldown' 的账号：429/Cloudflare 等临时冷却 → 'ready'
---     （限流事实留在 provider_quota_json，由投影滚动兜底）；
---     402 语义的 usage_limit_exhausted 且未到期 → 'quota_exhausted'。
-
--- 1. 迁移存量 cooldown 账号。
-update provider_accounts
-set availability = case
-      when availability_reason = 'usage_limit_exhausted'
-           and cooldown_until is not null
-           and cooldown_until > now()
-        then 'quota_exhausted'
-      else 'ready'
-    end
-where availability = 'cooldown';
-
--- 2. 删除依赖 cooldown_until 的约束与索引。
-alter table provider_accounts drop constraint provider_accounts_cooldown_ck;
-drop index provider_accounts_availability_idx;
-
--- 3. availability CHECK 去掉 'cooldown'。
-alter table provider_accounts drop constraint provider_accounts_availability_ck;
-alter table provider_accounts
-  add constraint provider_accounts_availability_ck check (
-    availability in (
-      'unknown',
-      'ready',
-      'quota_exhausted',
-      'expired',
-      'banned',
-      'invalid'
-    )
-  );
-
--- 4. 删除列。
-alter table provider_accounts drop column availability_reason;
-alter table provider_accounts drop column cooldown_until;
-
--- 5. 重建可用性索引（不含 cooldown_until）。
-create index provider_accounts_availability_idx
-  on provider_accounts (availability, id);

backend/migrations/0003_materialize_quota_limit_reached.sql

@@ -1,20 +0,0 @@
--- 物化快照级限流事实：Dashboard 复用 Provider 解析结果，不再 SQL 解析 raw quota JSON。
---
--- `quota_limit_reached` 由 Provider 在写 quota 时计算（快照级：顶层或任一窗口触顶，
--- 已过 reset 的窗口不计数），Admin/Dashboard 直接读该列。
-
-alter table provider_accounts
-  add column quota_limit_reached boolean not null default false;
-
--- 存量回填：从现有 raw JSON 推导（仅 primary_window 的 limit_reached + reset 未过期）。
-update provider_accounts
-set quota_limit_reached = coalesce(
-  provider_quota_json is not null
-  and provider_quota_json->'rate_limit'->>'limit_reached' = 'true'
-  and (
-    provider_quota_json->'rate_limit'->'primary_window'->>'reset_at' is null
-    or (provider_quota_json->'rate_limit'->'primary_window'->>'reset_at')::bigint > extract(epoch from now())::bigint
-  ),
-  false
-)
-where provider_quota_json is not null;

backend/migrations/0004_fix_quota_limit_reached_null.sql

@@ -1,8 +0,0 @@
--- 修正 0003 存量回填：raw JSON 缺 rate_limit 键时表达式为 NULL，
--- 赋 NULL 违反 not-null 约束。0004 把仍为 NULL 的行兜底为 false
--- （0003 已应用的环境，add column 用 default false 填充，通常无 NULL；
--- 本迁移保证任何环境下该列都非 NULL）。
-
-update provider_accounts
-set quota_limit_reached = coalesce(quota_limit_reached, false)
-where quota_limit_reached is null;