Add fleet ops dashboard, Calibrate enforcement, and dead-code cleanup.

Ship live alerts, pool status, AI monitor, remote agent commands, build manager, and uninstall flow; wire Calibrate settings (WS ping, pool traffic log, retention limits) at runtime and exclude server/data from git.

server/web/src/components/Visual/SystemStatusBar.tsx

@@ -0,0 +1,59 @@
+import { useEffect, useState } from 'react';
+import { Link } from 'react-router-dom';
+import { api } from '../../api/client';
+import './VisualComponents.css';
+
+export default function SystemStatusBar() {
+  const [serverOk, setServerOk] = useState(true);
+  const [agentTotal, setAgentTotal] = useState(0);
+  const [agentOnline, setAgentOnline] = useState(0);
+  const [buildCount, setBuildCount] = useState(0);
+
+  useEffect(() => {
+    const poll = async () => {
+      try {
+        await api.healthCheck();
+        setServerOk(true);
+      } catch {
+        setServerOk(false);
+      }
+      try {
+        const agents = await api.listAgents();
+        setAgentTotal(agents.length);
+        setAgentOnline(agents.filter((a) => a.status === 'online').length);
+      } catch {
+        setAgentTotal(0);
+        setAgentOnline(0);
+      }
+      try {
+        const builds = await api.listBuilds();
+        setBuildCount(builds.length);
+      } catch {
+        setBuildCount(0);
+      }
+    };
+    poll();
+    const id = setInterval(poll, 15000);
+    return () => clearInterval(id);
+  }, []);
+
+  return (
+    <div className="system-status-bar">
+      <span className={`status-pill ${serverOk ? 'ok' : 'bad'}`}>
+        <span className="status-pill-dot" />
+        SERVER {serverOk ? 'UP' : 'DOWN'}
+      </span>
+      <span className={`status-pill ${agentOnline > 0 ? 'ok' : agentTotal > 0 ? 'warn' : ''}`}>
+        <span className="status-pill-dot" />
+        FLEET {agentOnline}/{agentTotal} ONLINE
+      </span>
+      <span className={`status-pill ${buildCount > 0 ? 'ok' : 'warn'}`}>
+        <span className="status-pill-dot" />
+        {buildCount} BUILD{buildCount === 1 ? '' : 'S'}
+      </span>
+      <Link to="/guide" className="status-pill" style={{ marginLeft: 'auto', textDecoration: 'none', color: 'var(--neon-cyan)' }}>
+        📖 GUIDE
+      </Link>
+    </div>
+  );
+}