completeness pass 2: agent-token auth on /api/agent/*, token-injected agent.py downloads, export-all zip endpoint, node detail drawer (metrics/loot/tags/ping), screenshot watch mode, honest Linux-only binary note, token-aware binary command, watch-state render persistence

public/index.html

@@ -258,6 +258,7 @@
 
         <div class="tab-content" id="tab-binary">
           <p class="tab-description">Compiled standalone binary executable (no Python installation required on target system).</p>
+          <p class="tab-description" style="color:#f87171;"><i class="fa-solid fa-circle-info"></i> Binary is <strong>Linux x64 only</strong> right now (built on this server). Windows/macOS builds are pending a cross-compile runner — use the Windows/macOS installer tabs (they only need Python 3) until then.</p>
           <div class="code-block">
             <code id="codeBinary">curl -sSL <span class="server-url-placeholder">https://agent.thetempleofdoom.com</span>/bin/NexusAgent -o NexusAgent && chmod +x NexusAgent && ./NexusAgent --server <span class="server-url-placeholder">https://agent.thetempleofdoom.com</span></code>
             <button class="btn-copy" onclick="copyCode('codeBinary', this)"><i class="fa-regular fa-copy"></i> Copy</button>