Add Maria WhatsApp+RAG bridge as a service (LXC 171)

Move the /tmp prototype (Baileys bridge + RAG consumer) into git as a
proper sibling project to discord-bridge/: own systemd --user units
(whatsapp bridge, rag consumer, dashboard, periodic Drive sync timer),
a filesystem document store with a stdlib control dashboard (start/
stop/restart, document CRUD, reindex, Google Drive sync via rclone),
and an idempotent ops/install.sh following the same conventions.

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

proxmox/lxc171-claude-agent/maria-whatsapp-bridge/dashboard/login.html

@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html lang="ro">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width,initial-scale=1">
+<title>Maria — autentificare</title>
+<style>
+  body{font-family:system-ui,sans-serif;background:#111;color:#eee;display:flex;
+       align-items:center;justify-content:center;min-height:100vh;margin:0}
+  form{background:#1b1b1b;padding:32px;border-radius:12px;width:320px}
+  h1{font-size:18px;margin:0 0 16px}
+  input{width:100%;padding:10px;border-radius:6px;border:1px solid #333;
+        background:#0d0d0d;color:#eee;box-sizing:border-box;margin-bottom:12px}
+  button{width:100%;padding:10px;border-radius:6px;border:none;background:#2e7d32;
+         color:#fff;font-weight:600;cursor:pointer}
+  button:hover{background:#256428}
+  .err{color:#e57373;font-size:13px;min-height:18px}
+</style>
+</head>
+<body>
+<form id="f">
+  <h1>Maria — dashboard WhatsApp+RAG</h1>
+  <input type="password" id="token" placeholder="DASHBOARD_TOKEN" autofocus>
+  <button type="submit">Intra</button>
+  <div class="err" id="err"></div>
+</form>
+<script>
+document.getElementById('f').addEventListener('submit', async (e) => {
+  e.preventDefault();
+  const token = document.getElementById('token').value;
+  const err = document.getElementById('err');
+  err.textContent = '';
+  try {
+    const r = await fetch('/api/auth/login', {
+      method: 'POST', headers: {'Content-Type': 'application/json'},
+      body: JSON.stringify({token}),
+    });
+    if (r.ok) { location.href = '/'; return; }
+    const d = await r.json().catch(() => ({}));
+    err.textContent = d.error || 'token invalid';
+  } catch (ex) {
+    err.textContent = 'eroare de retea';
+  }
+});
+</script>
+</body>
+</html>