feat: provider api_formats 可空继承、OpenAI 图片 edit/variation 与用量配额多项补强

- 鉴权: provider_api_keys.api_formats 改为可空，OAuth 托管 key 自动继承 provider endpoints 激活格式，相关 handler/测试同步更新
- 图片 planner: OpenAI 图片路由新增 edit/variation 操作并完善参数校验、响应合并与流式处理
- 用量: user me usage 返回区分 client_requested_stream/upstream_is_stream，前端 usage 列表筛选与展示增强
- 统计: stats_daily_model 新增 cache_creation_ephemeral_5m/1h tokens 字段与回填链路
- 配额/observability: quota repository 新增内存与 SQL 扩展，admin observability usage 字段扩充
- 其它: OAuth 导入/轮询收敛、provider 汇总与 pool admin 读写链路小修、新增 system_config 缓存与 provider template handler

Closes #318

Co-authored-by: Entropy.Xu <[email protected]>

apps/aether-gateway/src/handlers/admin/provider/oauth/dispatch/batch/execution.rs

@@ -201,8 +201,10 @@ pub(super) async fn execute_admin_provider_oauth_batch_import(
             match update_existing_provider_oauth_catalog_key(
                 state,
                 &existing_key,
+                provider_type,
                 &access_token,
                 &auth_config,
+                &api_formats,
                 None,
                 expires_at,
             )
@@ -242,6 +244,7 @@ pub(super) async fn execute_admin_provider_oauth_batch_import(
             match create_provider_oauth_catalog_key(
                 state,
                 provider_id,
+                provider_type,
                 key_name.as_str(),
                 &access_token,
                 &auth_config,

apps/aether-gateway/src/handlers/admin/provider/oauth/dispatch/batch/kiro_import.rs

@@ -57,6 +57,7 @@ pub(super) async fn execute_admin_provider_oauth_kiro_batch_import(
     let endpoints = state
         .list_provider_catalog_endpoints_by_provider_ids(&[provider_id.to_string()])
         .await?;
+    let api_formats = provider_oauth_active_api_formats(&endpoints);
     let runtime_endpoint = provider_oauth_runtime_endpoint_for_provider("kiro", &endpoints);
     let request_proxy = state
         .resolve_admin_provider_oauth_operation_proxy_snapshot(
@@ -191,8 +192,10 @@ pub(super) async fn execute_admin_provider_oauth_kiro_batch_import(
             match update_existing_provider_oauth_catalog_key(
                 state,
                 &existing_key,
+                provider.provider_type.as_str(),
                 &access_token,
                 &auth_config,
+                &api_formats,
                 None,
                 refreshed_auth_config.expires_at,
             )
@@ -223,10 +226,11 @@ pub(super) async fn execute_admin_provider_oauth_kiro_batch_import(
             match create_provider_oauth_catalog_key(
                 state,
                 provider_id,
+                provider.provider_type.as_str(),
                 &key_name,
                 &access_token,
                 &auth_config,
-                &provider_oauth_active_api_formats(&endpoints),
+                &api_formats,
                 None,
                 refreshed_auth_config.expires_at,
             )