Fix licensing.

src/components/DiagnosticsCard.tsx

@@ -1,3 +1,13 @@
+//
+// Copyright 2026 James Pace
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+//
+// This Source Code Form is "Incompatible With Secondary Licenses", as
+// defined by the Mozilla Public License, v. 2.0.
+//
 import React, { useState } from "react";
 import { Button, ListGroup, Collapse } from "react-bootstrap";
 import {