fix(ui): default issue sort to newest-first for new companies

Changes the default sort from "status ascending" to "created descending"
so newest issues appear at the top. Also sets default groupBy to "none"
since date-based sorting works best as a flat list.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/components/IssuesList.tsx

@@ -49,9 +49,9 @@ const defaultViewState: IssueViewState = {
   priorities: [],
   assignees: [],
   labels: [],
-  sortField: "status",
-  sortDir: "asc",
-  groupBy: "status",
+  sortField: "created",
+  sortDir: "desc",
+  groupBy: "none",
   viewMode: "list",
   collapsedGroups: [],
 };
@@ -272,13 +272,13 @@ export function IssuesList({
             <Plus className="h-4 w-4 sm:mr-1" />
             <span className="hidden sm:inline">New Issue</span>
           </Button>
-          <div className="relative w-36 sm:w-52 md:w-64">
+          <div className="relative w-48 sm:w-64 md:w-80">
             <Search className="pointer-events-none absolute left-2 top-1/2 h-3.5 w-3.5 -translate-y-1/2 text-muted-foreground" />
             <Input
               value={issueSearch}
               onChange={(e) => setIssueSearch(e.target.value)}
               placeholder="Search issues..."
-              className="h-8 pl-7 text-xs sm:text-sm"
+              className="pl-7 text-xs sm:text-sm"
               aria-label="Search issues"
             />
           </div>