feat(web): full-width sortable/filterable objects table with URL state (#44)

Replace the narrow ObjectList with a full-width ObjectsTable whose state
(sort/order/q/visibility/limit/offset) lives entirely in the URL via
useSearchParams. Sortable headers toggle sort+dir with aria-sort, a
debounced quick-filter and visibility chips mirror the search-panel
pattern, and a pagination footer offers prev/next + page-size select.
Rows deep-link to /objects/:id preserving the query string.

useObjectsPage now takes an ObjectListParams object (sort/order/
visibility/q) with keepPreviousData. ObjectsPage renders the table as
the full-width landing view, surfacing the nested <Outlet/> detail as a
simple right-side panel only when a :id child route is active (Phase 3
makes this responsive). object-list.tsx and its test are removed.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/api/queries.ts

@@ -43,12 +43,31 @@ export function useMe() {
   });
 }
 
-export function useObjectsPage(limit: number, offset: number) {
+export type ObjectListParams = {
+  limit: number;
+  offset: number;
+  sort?: string;
+  order?: "asc" | "desc";
+  visibility?: string;
+  q?: string;
+};
+
+export function useObjectsPage(params: ObjectListParams) {
   return useQuery({
-    queryKey: ["objects", { limit, offset }],
+    queryKey: ["objects", params],
+    placeholderData: keepPreviousData,
     queryFn: async () => {
       const { data, error } = await api.GET("/api/admin/objects", {
-        params: { query: { limit, offset } },
+        params: {
+          query: {
+            limit: params.limit,
+            offset: params.offset,
+            sort: params.sort,
+            order: params.order,
+            visibility: params.visibility,
+            q: params.q,
+          },
+        },
       });
 
       if (error || !data) throw new Error("failed to load objects");