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/pool_admin/payloads.rs

@@ -3,26 +3,14 @@ use crate::handlers::admin::provider::shared::support::{
 };
 use crate::handlers::admin::request::AdminAppState;
 use crate::handlers::admin::shared::{provider_key_status_snapshot_payload, unix_secs_to_rfc3339};
-use crate::provider_key_auth::provider_key_auth_semantics;
+use crate::provider_key_auth::{provider_key_auth_semantics, provider_key_effective_api_formats};
 use aether_admin::provider::pool as admin_provider_pool_pure;
 use aether_admin::provider::quota as admin_provider_quota_pure;
-use aether_data_contracts::repository::provider_catalog::StoredProviderCatalogKey;
+use aether_data_contracts::repository::provider_catalog::{
+    StoredProviderCatalogEndpoint, StoredProviderCatalogKey,
+};
 use serde_json::json;
 
-pub(super) fn admin_pool_api_formats(key: &StoredProviderCatalogKey) -> Vec<String> {
-    key.api_formats
-        .as_ref()
-        .and_then(serde_json::Value::as_array)
-        .map(|values| {
-            values
-                .iter()
-                .filter_map(serde_json::Value::as_str)
-                .map(ToOwned::to_owned)
-                .collect::<Vec<_>>()
-        })
-        .unwrap_or_default()
-}
-
 fn admin_pool_string_list(value: Option<&serde_json::Value>) -> Option<Vec<String>> {
     let values = value
         .and_then(serde_json::Value::as_array)
@@ -749,6 +737,7 @@ fn admin_pool_scheduling_payload(
 pub(super) fn build_admin_pool_key_payload(
     state: &AdminAppState<'_>,
     provider_type: &str,
+    endpoints: &[StoredProviderCatalogEndpoint],
     key: &StoredProviderCatalogKey,
     runtime: &AdminProviderPoolRuntimeState,
     pool_config: Option<AdminProviderPoolConfig>,
@@ -915,7 +904,11 @@ pub(super) fn build_admin_pool_key_payload(
     );
     payload.insert(
         "api_formats".to_string(),
-        json!(admin_pool_api_formats(key)),
+        json!(provider_key_effective_api_formats(
+            key,
+            provider_type,
+            endpoints,
+        )),
     );
     payload.insert(
         "rate_multipliers".to_string(),

apps/aether-gateway/src/handlers/admin/provider/pool_admin/read_routes/keys.rs

@@ -124,6 +124,9 @@ pub(super) async fn build_admin_pool_list_keys_response(
     };
 
     let key_ids = keys.iter().map(|key| key.id.clone()).collect::<Vec<_>>();
+    let endpoints = state
+        .list_provider_catalog_endpoints_by_provider_ids(std::slice::from_ref(&provider.id))
+        .await?;
     let runtime = match (state.redis_kv_runner(), pool_config.as_ref()) {
         (Some(runner), Some(pool_config)) if !key_ids.is_empty() => {
             read_admin_provider_pool_runtime_state(
@@ -143,6 +146,7 @@ pub(super) async fn build_admin_pool_list_keys_response(
             pool_payloads::build_admin_pool_key_payload(
                 state,
                 &provider.provider_type,
+                &endpoints,
                 &key,
                 &runtime,
                 pool_config.clone(),