fix(oauth): 修复 OAuth 刷新后 Token 有效期不更新问题 (#324)

- 持久化刷新后的 `expires_at` 到 Provider Key SQL 更新链路
- 手动刷新接口优先返回本次刷新得到的过期时间
- 按当前 Key 字段重建 OAuth 状态快照，避免旧快照覆盖
- 前端刷新后防止旧列表数据回退覆盖新有效期

crates/aether-data/src/repository/provider_catalog/sql.rs

@@ -1366,6 +1366,7 @@ INSERT INTO provider_api_keys (
         .bind(key.is_active)
         .bind(key.created_at_unix_ms.map(|value| value as f64))
         .bind(key.updated_at_unix_secs.map(|value| value as f64))
+        .bind(key.expires_at_unix_secs.map(|value| value as f64))
         .execute(&self.pool)
         .await
         .map_postgres_err()?;
@@ -1735,6 +1736,10 @@ SET
   proxy = $22,
   fingerprint = $23,
   upstream_metadata = $24,
+  expires_at = CASE
+    WHEN $38::double precision IS NULL THEN NULL
+    ELSE TO_TIMESTAMP($38::double precision)
+  END,
   oauth_invalid_at = CASE
     WHEN $25::double precision IS NULL THEN NULL
     ELSE TO_TIMESTAMP($25::double precision)
@@ -1803,6 +1808,7 @@ WHERE id = $1
         .bind(key.last_rpm_peak.map(|value| value as i32))
         .bind(key.is_active)
         .bind(key.updated_at_unix_secs.map(|value| value as f64))
+        .bind(key.expires_at_unix_secs.map(|value| value as f64))
         .execute(&self.pool)
         .await
         .map_postgres_err()?