feat: Telegram fleet alerts, forge sigil scramble, UI polish, agent ops

- Calibrate: per-event Telegram/SMTP toggles, test notification, chat ID help
- Notify on agent connect/reconnect, offline/hashrate/rejection, forge complete
- Sigil scramble post-forge uniquification and Dispense Reveal ceremony
- Full system check, desktop push, BITS/host-binary persistence, Path Tracer
- Dashboard/Crucible visual polish, haptics, sacred geometry, mobile nav
- README documents alerts, sigil scramble, and pack-usb workflow
- USB bundle repacked via pack-usb.bat (AetherForge.exe + synced agent source)

server/web/src/pages/AgentsPage.tsx

@@ -4,6 +4,7 @@ import { useWebSocket } from '../hooks/useWebSocket';
 import type { Agent, HashrateSample, ServerInfo } from '../types';
 import LatencyBadge from '../components/Fleet/LatencyBadge';
 import HashrateChart from '../components/Charts/HashrateChart';
+import { resolveChartSeries } from '../help/chartSampleData';
 import NeonCard from '../components/NeonCard/NeonCard';
 import AgentRemoteActions from '../components/Fleet/AgentRemoteActions';
 import AgentListItem from '../components/Fleet/AgentListItem';
@@ -95,6 +96,7 @@ export default function AgentsPage() {
   const [loadError, setLoadError] = useState('');
   const [logContent, setLogContent] = useState('');
   const [logLoading, setLogLoading] = useState(false);
+  const [logDownloading, setLogDownloading] = useState(false);
   const [notesDraft, setNotesDraft] = useState('');
   const [tagsDraft, setTagsDraft] = useState('');
   const [metaSaving, setMetaSaving] = useState(false);
@@ -587,19 +589,28 @@ export default function AgentsPage() {
                 </div>
               </div>
 
-              {hashrateHistory.length > 0 && (
+              {selectedAgent && (
                 <div className="detail-section">
                   <h3 className="font-tech">HASHRATE TELEMETRY</h3>
-                  <HashrateChart
-                    title=""
-                    color="#00f5ff"
-                    unit="H/s"
-                    height={240}
-                    data={[...hashrateHistory].reverse().map((s) => ({
+                  {(() => {
+                    const live = [...hashrateHistory].reverse().map((s) => ({
                       time: new Date(s.timestamp).toLocaleTimeString(),
                       value: s.hashrate,
-                    }))}
-                  />
+                    }));
+                    const chart = resolveChartSeries(live, 'hashrate', {
+                      tailValue: selectedAgent.hashrate_15m,
+                    });
+                    return (
+                      <HashrateChart
+                        title=""
+                        color="#00f5ff"
+                        unit="H/s"
+                        height={240}
+                        data={chart.data}
+                        displayMode={chart.mode}
+                      />
+                    );
+                  })()}
                 </div>
               )}
 
@@ -620,7 +631,29 @@ export default function AgentsPage() {
               </div>
 
               <div className="detail-section">
-                <h3>Agent Log <button type="button" className="agent-action-btn" onClick={() => refreshLog(true)} disabled={logLoading || selectedAgent.status !== 'online'}>{logLoading ? '…' : 'Refresh'}</button></h3>
+                <h3>
+                  Agent Log{' '}
+                  <button type="button" className="agent-action-btn" onClick={() => refreshLog(true)} disabled={logLoading || selectedAgent.status !== 'online'}>{logLoading ? '…' : 'Refresh'}</button>
+                  <button
+                    type="button"
+                    className="agent-action-btn"
+                    disabled={logDownloading || selectedAgent.status !== 'online'}
+                    title="Download full agent log as a file"
+                    style={{ marginLeft: '0.4rem' }}
+                    onClick={async () => {
+                      setLogDownloading(true);
+                      try {
+                        await api.downloadAgentLog(selectedAgent.id);
+                      } catch (err) {
+                        alert(err instanceof Error ? err.message : 'Download failed');
+                      } finally {
+                        setLogDownloading(false);
+                      }
+                    }}
+                  >
+                    {logDownloading ? '…' : '⬇ Download'}
+                  </button>
+                </h3>
                 <p className="form-hint">Streams miner.log when file_logging is enabled (non-stealth builds).</p>
                 <pre className="log-viewer">{logContent || (selectedAgent.status === 'online' ? 'Click Fetch Log or Refresh' : 'Agent offline')}</pre>
               </div>