feat(usage): improve pagination with first/last 3 pages and page jump input

Show first 3 and last 3 page buttons instead of just first/last, with
Set-based deduplication for clean edge merging. Add a page number input
field with Go button for direct page navigation.

src/components/usage/RequestLogTable.tsx

@@ -57,6 +57,7 @@ export function RequestLogTable({
   const [appliedFilters, setAppliedFilters] = useState<LogFilters>({});
   const [draftFilters, setDraftFilters] = useState<LogFilters>({});
   const [page, setPage] = useState(0);
+  const [pageInput, setPageInput] = useState("");
   const pageSize = 20;
   const [validationError, setValidationError] = useState<string | null>(null);
 
@@ -131,6 +132,15 @@ export function RequestLogTable({
     setPage(0);
   };
 
+  const handleGoToPage = () => {
+    const trimmed = pageInput.trim();
+    if (!/^\d+$/.test(trimmed)) return;
+    const parsed = Number(trimmed);
+    if (parsed < 1 || parsed > totalPages) return;
+    setPage(parsed - 1);
+    setPageInput("");
+  };
+
   const handleRefresh = () => {
     const key = {
       timeMode: appliedTimeMode,
@@ -561,30 +571,33 @@ export function RequestLogTable({
                 >
                   <ChevronLeft className="h-4 w-4" />
                 </Button>
-                {/* 页码按钮 */}
                 {(() => {
                   const pages: (number | string)[] = [];
-                  if (totalPages <= 7) {
+                  // 3 head + 3 tail + 3 neighborhood = 9 max distinct pages
+                  if (totalPages <= 9) {
                     for (let i = 0; i < totalPages; i++) pages.push(i);
                   } else {
-                    pages.push(0);
-                    if (page > 2) pages.push("...");
+                    const pageSet = new Set<number>();
+                    for (let i = 0; i < 3; i++) pageSet.add(i);
+                    for (let i = totalPages - 3; i < totalPages; i++)
+                      pageSet.add(i);
                     for (
-                      let i = Math.max(1, page - 1);
-                      i <= Math.min(totalPages - 2, page + 1);
+                      let i = Math.max(0, page - 1);
+                      i <= Math.min(totalPages - 1, page + 1);
                       i++
-                    ) {
-                      pages.push(i);
+                    )
+                      pageSet.add(i);
+                    const sorted = Array.from(pageSet).sort((a, b) => a - b);
+                    for (let i = 0; i < sorted.length; i++) {
+                      if (i > 0 && sorted[i] - sorted[i - 1] > 1) {
+                        pages.push(`ellipsis-${i}`);
+                      }
+                      pages.push(sorted[i]);
                     }
-                    if (page < totalPages - 3) pages.push("...");
-                    pages.push(totalPages - 1);
                   }
-                  return pages.map((p, idx) =>
+                  return pages.map((p) =>
                     typeof p === "string" ? (
-                      <span
-                        key={`ellipsis-${idx}`}
-                        className="px-2 text-muted-foreground"
-                      >
+                      <span key={p} className="px-2 text-muted-foreground">
                         ...
                       </span>
                     ) : (
@@ -608,6 +621,21 @@ export function RequestLogTable({
                 >
                   <ChevronRight className="h-4 w-4" />
                 </Button>
+                <div className="flex items-center gap-1 ml-2">
+                  <Input
+                    type="text"
+                    value={pageInput}
+                    onChange={(e) => setPageInput(e.target.value)}
+                    onKeyDown={(e) => {
+                      if (e.key === "Enter") handleGoToPage();
+                    }}
+                    placeholder={t("usage.pageInputPlaceholder")}
+                    className="h-8 w-16 text-center text-xs"
+                  />
+                  <Button variant="outline" size="sm" onClick={handleGoToPage}>
+                    {t("usage.goToPage")}
+                  </Button>
+                </div>
               </div>
             </div>
           )}