feat: UI no-admin (vistas mis/asignados/sin-asignar, config solo admin)

frontend/src/app/(app)/tickets/page.tsx

@@ -3,6 +3,7 @@
 import { useEffect, useState, useCallback } from "react";
 import { useRouter } from "next/navigation";
 import { getTickets, type Ticket } from "@/lib/api";
+import { useAuth } from "@/lib/auth";
 import BadgeStatus from "@/components/BadgeStatus";
 import BadgePriority from "@/components/BadgePriority";
 import PaginationComponent from "@/components/Pagination";
@@ -10,21 +11,33 @@ import Link from "next/link";
 
 export default function TicketsPage() {
   const router = useRouter();
+  const { user } = useAuth();
   const [tickets, setTickets] = useState<Ticket[]>([]);
   const [total, setTotal] = useState(0);
   const [page, setPage] = useState(1);
   const [loading, setLoading] = useState(true);
+  const [view, setView] = useState<"all" | "mine" | "assigned" | "unassigned">("all");
   const [statusFilter, setStatusFilter] = useState("");
   const [priorityFilter, setPriorityFilter] = useState("");
   const [search, setSearch] = useState("");
   const pageSize = 10;
 
+  const numericId = parseInt(user?.idUsuario ?? "", 10);
+  const hasNumericId = !isNaN(numericId);
+
   const fetchTickets = useCallback(async () => {
     setLoading(true);
     try {
       const data = await getTickets({
         status: statusFilter || undefined,
         priority: priorityFilter || undefined,
+        requesterId: view === "mine" && hasNumericId ? numericId : undefined,
+        assigneeId:
+          view === "assigned" && hasNumericId
+            ? numericId
+            : view === "unassigned"
+              ? 0
+              : undefined,
         search: search || undefined,
         page,
         pageSize,
@@ -37,7 +50,7 @@ export default function TicketsPage() {
     } finally {
       setLoading(false);
     }
-  }, [statusFilter, priorityFilter, search, page]);
+  }, [statusFilter, priorityFilter, search, page, view, numericId, hasNumericId]);
 
   useEffect(() => {
     fetchTickets();
@@ -56,6 +69,30 @@ export default function TicketsPage() {
       </div>
 
       {/* Filters */}
+      <div className="filter-bar mb-3">
+        <div className="btn-group" role="group" aria-label="Vista">
+          {(
+            [
+              ["all", "Todos"],
+              ["mine", "Míos"],
+              ["assigned", "Asignados a mí"],
+              ["unassigned", "Sin asignar"],
+            ] as const
+          ).map(([v, label]) => (
+            <button
+              key={v}
+              type="button"
+              className={`btn btn-sm ${view === v ? "btn-primary" : "btn-outline-secondary"}`}
+              onClick={() => {
+                setView(v);
+                setPage(1);
+              }}
+            >
+              {label}
+            </button>
+          ))}
+        </div>
+      </div>
       <div className="filter-bar mb-4">
         <div className="d-flex align-items-center gap-2">
           <i className="bi bi-funnel text-muted"></i>