diff --git a/docs/implementation-status.md b/docs/implementation-status.md
index ce4d44874..b97783516 100644
--- a/docs/implementation-status.md
+++ b/docs/implementation-status.md
@@ -7,7 +7,7 @@ Update this file before each feature commit.
 | Scaffold | Completed | initial scaffold commit | `cargo fmt --check`; `cargo test`; `cargo clippy --all-targets --all-features --locked -- -D warnings` | Rust crate, lint policy, pinned TLS-sensitive dependencies, `.gitignore`, and minimal entry points are in place. |
 | API contract docs | Completed | initial scaffold commit | `cargo fmt --check`; `cargo test`; `cargo clippy --all-targets --all-features --locked -- -D warnings` | `/v1/*` OpenAI-compatible body, `/admin/*` frontend envelope, body codes, camelCase, and request ID policy are documented. |
 | Configuration | Completed | pending config commit | `cargo test default_config_keeps_only_codex_backend`; full `fmt/test/clippy` before commit | Defines Codex-only config, default YAML, and `Arc<AppServices>` state shell. |
-| SQLite storage | Planned |  |  |  |
+| SQLite storage | Completed | pending storage commit | `cargo test migrations_create_accounts_and_event_tables`; full `fmt/test/clippy` before commit | Creates SQLite WAL connector, migrations for accounts/API keys/sessions/cookies/fingerprints/events, and event/account indexes. |
 | Admin auth and client API keys | Planned |  |  |  |
 | Secret encryption | Planned |  |  |  |
 | Logging and pagination | Planned |  |  |  |
diff --git a/docs/superpowers/plans/2026-06-11-codex-proxy-rs.md b/docs/superpowers/plans/2026-06-11-codex-proxy-rs.md
index 84e366fcf..d57253b06 100644
--- a/docs/superpowers/plans/2026-06-11-codex-proxy-rs.md
+++ b/docs/superpowers/plans/2026-06-11-codex-proxy-rs.md
@@ -929,7 +929,7 @@ git commit -m "feat: add codex-only configuration"
 - Modify: `/home/zyy/桌面/Codes/codex-proxy-rs/src/lib.rs`
 - Test: `/home/zyy/桌面/Codes/codex-proxy-rs/tests/storage_migration_test.rs`
 
-- [ ] **Step 1: Write failing migration test**
+- [x] **Step 1: Write failing migration test**
 
 Create `/home/zyy/桌面/Codes/codex-proxy-rs/tests/storage_migration_test.rs`:
 
@@ -951,7 +951,7 @@ async fn migrations_create_accounts_and_event_tables() {
 }
 ```
 
-- [ ] **Step 2: Run test and verify RED**
+- [x] **Step 2: Run test and verify RED**
 
 Run:
 
@@ -961,7 +961,7 @@ cargo test migrations_create_accounts_and_event_tables
 
 Expected: compile failure because `storage::db` does not exist.
 
-- [ ] **Step 3: Create migrations**
+- [x] **Step 3: Create migrations**
 
 Create `/home/zyy/桌面/Codes/codex-proxy-rs/migrations/0001_initial.sql`:
 
@@ -1068,7 +1068,7 @@ create index if not exists idx_client_api_keys_prefix on client_api_keys(prefix)
 create index if not exists idx_account_cookies_account on account_cookies(account_id);
 ```
 
-- [ ] **Step 4: Implement database connector**
+- [x] **Step 4: Implement database connector**
 
 Modify `/home/zyy/桌面/Codes/codex-proxy-rs/src/lib.rs`:
 
@@ -1103,7 +1103,7 @@ pub async fn connect_sqlite(database_url: &str) -> Result<SqlitePool, sqlx::Erro
 }
 ```
 
-- [ ] **Step 5: Verify migrations**
+- [x] **Step 5: Verify migrations**
 
 Run:
 
@@ -1113,7 +1113,7 @@ cargo test migrations_create_accounts_and_event_tables
 
 Expected: pass.
 
-- [ ] **Step 6: Commit storage**
+- [x] **Step 6: Commit storage**
 
 ```bash
 git add Cargo.toml migrations src/storage src/lib.rs tests/storage_migration_test.rs
diff --git a/migrations/0001_initial.sql b/migrations/0001_initial.sql
new file mode 100644
index 000000000..bad10f3b4
--- /dev/null
+++ b/migrations/0001_initial.sql
@@ -0,0 +1,89 @@
+pragma foreign_keys = on;
+
+create table if not exists admin_users (
+  id text primary key,
+  password_hash text not null,
+  created_at text not null,
+  updated_at text not null
+);
+
+create table if not exists admin_sessions (
+  id text primary key,
+  user_id text not null references admin_users(id) on delete cascade,
+  expires_at text not null,
+  created_at text not null
+);
+
+create table if not exists client_api_keys (
+  id text primary key,
+  name text not null,
+  prefix text not null,
+  key_hash text not null,
+  enabled integer not null default 1,
+  created_at text not null,
+  last_used_at text
+);
+
+create table if not exists accounts (
+  id text primary key,
+  email text,
+  account_id text,
+  user_id text,
+  label text,
+  plan_type text,
+  access_token_cipher text not null,
+  refresh_token_cipher text,
+  status text not null,
+  quota_json text,
+  quota_fetched_at text,
+  added_at text not null,
+  updated_at text not null
+);
+
+create table if not exists account_usage (
+  account_id text primary key references accounts(id) on delete cascade,
+  request_count integer not null default 0,
+  input_tokens integer not null default 0,
+  output_tokens integer not null default 0,
+  cached_tokens integer not null default 0,
+  last_used_at text
+);
+
+create table if not exists account_cookies (
+  id text primary key,
+  account_id text not null references accounts(id) on delete cascade,
+  domain text not null,
+  name text not null,
+  value_cipher text not null,
+  path text not null default '/',
+  expires_at text,
+  updated_at text not null,
+  unique(account_id, domain, name, path)
+);
+
+create table if not exists fingerprints (
+  id text primary key,
+  app_version text not null,
+  build_number text not null,
+  platform text not null,
+  arch text not null,
+  chromium_version text not null,
+  user_agent_template text not null,
+  source text not null,
+  created_at text not null
+);
+
+create table if not exists event_logs (
+  id text primary key,
+  request_id text,
+  kind text not null,
+  level text not null,
+  account_id text,
+  route text,
+  model text,
+  status_code integer,
+  latency_ms integer,
+  message text not null,
+  metadata_json text not null,
+  created_at text not null
+);
diff --git a/migrations/0002_events_indexes.sql b/migrations/0002_events_indexes.sql
new file mode 100644
index 000000000..d96cc7f0a
--- /dev/null
+++ b/migrations/0002_events_indexes.sql
@@ -0,0 +1,6 @@
+create index if not exists idx_event_logs_created_id on event_logs(created_at desc, id desc);
+create index if not exists idx_event_logs_kind_created on event_logs(kind, created_at desc);
+create index if not exists idx_event_logs_request_id on event_logs(request_id);
+create index if not exists idx_accounts_status on accounts(status);
+create index if not exists idx_client_api_keys_prefix on client_api_keys(prefix);
+create index if not exists idx_account_cookies_account on account_cookies(account_id);
diff --git a/src/lib.rs b/src/lib.rs
index 36c05cd2c..14c3e968f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
 pub mod config;
 pub mod error;
 pub mod state;
+pub mod storage;
diff --git a/src/storage/db.rs b/src/storage/db.rs
new file mode 100644
index 000000000..6b7bb545e
--- /dev/null
+++ b/src/storage/db.rs
@@ -0,0 +1,16 @@
+use std::{str::FromStr, time::Duration};
+
+use sqlx::{sqlite::SqliteConnectOptions, SqlitePool};
+
+pub async fn connect_sqlite(database_url: &str) -> Result<SqlitePool, sqlx::Error> {
+    let options = SqliteConnectOptions::from_str(database_url)?
+        .create_if_missing(true)
+        .journal_mode(sqlx::sqlite::SqliteJournalMode::Wal)
+        .foreign_keys(true)
+        .busy_timeout(Duration::from_secs(5));
+
+    // 中文注释：WAL 和外键必须在连接层统一启用，避免后续仓储绕过一致性约束。
+    let pool = SqlitePool::connect_with(options).await?;
+    sqlx::migrate!("./migrations").run(&pool).await?;
+    Ok(pool)
+}
diff --git a/src/storage/mod.rs b/src/storage/mod.rs
new file mode 100644
index 000000000..dec10232b
--- /dev/null
+++ b/src/storage/mod.rs
@@ -0,0 +1 @@
+pub mod db;
diff --git a/tests/storage_migration_test.rs b/tests/storage_migration_test.rs
new file mode 100644
index 000000000..af2241f0d
--- /dev/null
+++ b/tests/storage_migration_test.rs
@@ -0,0 +1,17 @@
+use codex_proxy_rs::storage::db::connect_sqlite;
+
+#[tokio::test]
+async fn migrations_create_accounts_and_event_tables() {
+    let dir = tempfile::tempdir().unwrap();
+    let db = dir.path().join("test.sqlite");
+    let url = format!("sqlite://{}", db.display());
+    let pool = connect_sqlite(&url).await.unwrap();
+
+    let row: (i64,) = sqlx::query_as(
+        "select count(*) from sqlite_master where type = 'table' and name in ('accounts', 'client_api_keys', 'event_logs')",
+    )
+    .fetch_one(&pool)
+    .await
+    .unwrap();
+    assert_eq!(row.0, 3);
+}