feat(maria-dashboard): reset pentru firele de discutie active

Nu exista nicio cale sa resetezi manual un fir blocat pe o discutie
veche (nici comanda de chat, nici buton) — un test in grupul "Maria
Test" a ramas ancorat pe un subiect vechi fara sa poata fi curatat
fara interventie directa pe server. Sectiune noua in dashboard, intre
"Trimise la suport" si "Clienti cunoscuti": listeaza firele active
din ~/.maria-bridge/conversations/ si le sterge la cerere (rutele
GET/POST /api/maria/fire), cu aceeasi sanitizare de nume de fisier ca
rag/fir.py (oglinda, nu import — coliziune de modul intre proiecte).

11/11 teste (6 noi + cele de clienti), fara regresii.

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

proxmox/lxc171-claude-agent/discord-bridge/dashboard/index.html

@@ -120,6 +120,16 @@
     <div id="mEsc" class="empty">se încarcă…</div>
   </section>
 
+  <section class="card">
+    <h2>Fire de discuție active <span class="count" id="mFirCount"></span></h2>
+    <div class="table-scroll">
+      <table class="stack-mobil">
+        <thead><tr><th>JID</th><th>Subiect</th><th>Ultima activitate</th><th></th></tr></thead>
+        <tbody id="mFire"></tbody>
+      </table>
+    </div>
+  </section>
+
   <section class="card">
     <h2>Clienți cunoscuți <span class="count" id="mClientCount"></span></h2>
     <div class="table-scroll">
@@ -596,6 +606,24 @@ async function mDelClient(id) {
   await mLoadClients();
 }
 
+async function mLoadFire() {
+  var res = await api('api/maria/fire');
+  var fire = res.ok ? (res.data.fire || []) : [];
+  document.getElementById('mFirCount').textContent = fire.length ? fire.length : '';
+  document.getElementById('mFire').innerHTML = fire.length ? fire.map(function (f) {
+    return '<tr><td data-label="JID" class="mono">' + esc(f.jid) + '</td>'
+      + '<td data-label="Subiect">' + esc(f.ancora) + '</td>'
+      + '<td data-label="Ultima activitate">' + (f.at ? new Date(f.at * 1000).toLocaleString('ro-RO') : '—') + '</td>'
+      + '<td><button class="small danger" onclick="mDelFir(\'' + esc(f.jid) + '\')">Resetează</button></td></tr>';
+  }).join('') : '<tr><td colspan="4" class="empty" data-label="">niciun fir activ</td></tr>';
+}
+
+async function mDelFir(jid) {
+  if (!confirm('Resetezi firul cu ' + jid + '? Maria va porni o discutie noua la urmatorul mesaj.')) return;
+  await post('api/maria/fire/delete', { jid: jid });
+  await mLoadFire();
+}
+
 var mLogFile = 'bridge';
 function mSetLog(which) { mLogFile = which; mRefreshLogs(); }
 async function mRefreshLogs() {
@@ -610,7 +638,7 @@ async function mRefreshLogs() {
 
 // ── pornire ───────────────────────────────────────────────────
 refresh(); refreshDoctor(); refreshLogs();
-mRefresh(); mRefreshLogs(); mLoadClients();
+mRefresh(); mRefreshLogs(); mLoadClients(); mLoadFire();
 setInterval(refresh, 5000);
 setInterval(refreshDoctor, 30000);
 setInterval(mRefresh, 4000);