feat: track upstream request ID and prevent response header override

When proxying through another new-api instance, the upstream
X-Oneapi-Request-Id was overwriting the local one in client responses.
This adds a new `upstream_request_id` field to the logs table, captures
the upstream ID during relay, and filters it from being copied back to
the client. Frontend gains search/filter and detail display support.

web/default/src/features/usage-logs/components/common-logs-filter-bar.tsx

@@ -88,6 +88,8 @@ export function CommonLogsFilterBar<TData>(
     if (searchParams.group) next.group = searchParams.group
     if (searchParams.username) next.username = searchParams.username
     if (searchParams.requestId) next.requestId = searchParams.requestId
+    if (searchParams.upstreamRequestId)
+      next.upstreamRequestId = searchParams.upstreamRequestId
 
     if (Object.keys(next).length > 0) {
       setFilters((prev) => ({ ...prev, ...next }))
@@ -106,6 +108,7 @@ export function CommonLogsFilterBar<TData>(
     searchParams.group,
     searchParams.username,
     searchParams.requestId,
+    searchParams.upstreamRequestId,
     searchParams.type,
   ])
 
@@ -161,7 +164,8 @@ export function CommonLogsFilterBar<TData>(
     !!filters.token ||
     !!filters.username ||
     !!filters.channel ||
-    !!filters.requestId
+    !!filters.requestId ||
+    !!filters.upstreamRequestId
 
   const hasAdditionalFilters =
     !!filters.model || !!filters.group || !!logType || hasExpandedFilters
@@ -290,6 +294,15 @@ export function CommonLogsFilterBar<TData>(
             onKeyDown={handleKeyDown}
             className={inputClass}
           />
+          <Input
+            placeholder={t('Upstream Request ID')}
+            value={filters.upstreamRequestId || ''}
+            onChange={(e) =>
+              handleChange('upstreamRequestId', e.target.value)
+            }
+            onKeyDown={handleKeyDown}
+            className={inputClass}
+          />
         </>
       }
       hasExpandedActiveFilters={hasExpandedFilters}

web/default/src/features/usage-logs/components/dialogs/details-dialog.tsx

@@ -519,6 +519,13 @@ export function DetailsDialog(props: DetailsDialogProps) {
                   mono
                 />
               )}
+              {props.log.upstream_request_id && (
+                <DetailRow
+                  label={t('Upstream Request ID')}
+                  value={props.log.upstream_request_id}
+                  mono
+                />
+              )}
 
               {props.isAdmin && props.log.channel > 0 && (
                 <DetailRow

web/default/src/features/usage-logs/data/schema.ts

@@ -44,6 +44,7 @@ export const usageLogSchema = z.object({
   ip: z.string().default(''),
   other: z.string().default(''),
   request_id: z.string().default(''),
+  upstream_request_id: z.string().default(''),
 })
 
 export type UsageLog = z.infer<typeof usageLogSchema>

web/default/src/features/usage-logs/lib/filter.ts

@@ -55,6 +55,9 @@ export function buildSearchParams(
         ...(commonFilters.group && { group: commonFilters.group }),
         ...(commonFilters.username && { username: commonFilters.username }),
         ...(commonFilters.requestId && { requestId: commonFilters.requestId }),
+        ...(commonFilters.upstreamRequestId && {
+          upstreamRequestId: commonFilters.upstreamRequestId,
+        }),
       }
     }
     case 'drawing': {

web/default/src/features/usage-logs/lib/utils.ts

@@ -204,6 +204,9 @@ export function buildApiParams(config: {
     ...(searchParams.requestId
       ? { request_id: String(searchParams.requestId) }
       : {}),
+    ...(searchParams.upstreamRequestId
+      ? { upstream_request_id: String(searchParams.upstreamRequestId) }
+      : {}),
     ...buildTimeRangeParams(searchParams, false),
   }
 

web/default/src/features/usage-logs/types.ts

@@ -52,6 +52,7 @@ export interface CommonLogFilters extends CommonFilters {
   group?: string
   username?: string
   requestId?: string
+  upstreamRequestId?: string
 }
 
 /**
@@ -267,6 +268,7 @@ export interface GetLogsParams {
   channel?: number
   group?: string
   request_id?: string
+  upstream_request_id?: string
 }
 
 export interface GetLogsResponse {
@@ -290,6 +292,7 @@ export interface GetLogStatsParams {
   channel?: number
   group?: string
   request_id?: string
+  upstream_request_id?: string
 }
 
 export interface GetLogStatsResponse {