meteor3: purge dead client packages — web UI renders on 3.1

alanning:roles removed (client crashed the whole bundle; plain user.roles
checks instead), selaias:cookie-consent replaced by in-repo React banner,
publish-performant-counts vendored with countAsync, Meteor.autorun dropped
(App)/Tracker.autorun (FiresMap), and the map publications not covered by
the REST smoke (activefiresmyloc, activefiresunionmyloc, fireAlerts,
oauth.verifyConfiguration) converted to async APIs.

Verified in browser: / and /fires render with map + cookie banner, zero
uncaught exceptions. REST smoke byte-identical (12/12).

imports/ui/components/CookieConsent/CookieConsent.js

@@ -0,0 +1,45 @@
+import React, { Component } from 'react';
+import i18n from 'i18next';
+import './CookieConsent.scss';
+
+/*
+ * Minimal cookie-consent banner replacing selaias:cookie-consent (Blaze,
+ * dead on Meteor 3: its `Cookies` global is gone and it crashed the whole
+ * client bundle at load). Same behavior: informative banner, dismissed once.
+ */
+const STORAGE_KEY = 'tcef-cookie-consent';
+
+class CookieConsent extends Component {
+  constructor(props) {
+    super(props);
+    let accepted = false;
+    try {
+      accepted = window.localStorage.getItem(STORAGE_KEY) === 'yes';
+    } catch (e) { /* storage disabled: show banner every time */ }
+    this.state = { accepted };
+    this.accept = this.accept.bind(this);
+  }
+
+  accept() {
+    try {
+      window.localStorage.setItem(STORAGE_KEY, 'yes');
+    } catch (e) { /* ignore */ }
+    this.setState({ accepted: true });
+  }
+
+  render() {
+    if (this.state.accepted) return null;
+    return (
+      <div className="CookieConsent">
+        <span>
+          {i18n.t('Utilizamos cookies para asegurar un mejor uso de nuestra web. Si continúas navegando, consideramos que aceptas su uso')}
+        </span>
+        <button type="button" className="btn btn-primary btn-sm" onClick={this.accept}>
+          {i18n.t('Aceptar')}
+        </button>
+      </div>
+    );
+  }
+}
+
+export default CookieConsent;

imports/ui/components/CookieConsent/CookieConsent.scss

@@ -0,0 +1,20 @@
+.CookieConsent {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  z-index: 2000;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 1em;
+  padding: 0.75em 1em;
+  background: rgba(0, 0, 0, 0.85);
+  color: #fff;
+  font-size: 0.9em;
+
+  button {
+    margin-left: 1em;
+    white-space: nowrap;
+  }
+}