feat(dashboard): SOC workflow overhaul — sidebar nav, doc tooltips, full-width layout

- base.html: collapsible sidebar navigation, doc tooltip system, JS helpers
  (fmtNum, fmtPct, fmtDuration, ecGrid, buildTable, docHTML)
- overview.html: SOC command center with stacked timeline, live alerts,
  campaigns panel, browser donut, 6 KPIs
- detections.html: threat color dots, raw score column, click-to-navigate rows
- network.html: JA4 rotation, brute-force, persistent threats tables, 6 KPIs
- ip_detail.html: ASN/country KPIs, AE/XGB/campaign columns, enriched features
- scores/traffic/features/models/classify: page_title blocks + doc tooltips
- api.py: 9 new endpoints (campaigns, brute-force, ja4-rotation, recurrence,
  cascade, alerts, timeline-detail, ua-rotation)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

services/dashboard/backend/templates/traffic.html

@@ -1,5 +1,14 @@
 {% extends "base.html" %}
 {% block title %}JA4 SOC — Trafic HTTP{% endblock %}
+{% block page_title %}
+    Trafic HTTP
+    <span class="relative inline-block ml-1"><button onclick="docToggle(this)" class="doc-btn">?</button><div class="doc-panel">
+        <h4>Logs HTTP bruts</h4>
+        <p>Toutes les requêtes HTTP capturées (24h). Filtrez par méthode, host ou status pour identifier les patterns suspects.</p>
+        <p><strong>Workflow :</strong> Filtrez POST → cherchez du brute-force → cliquez sur l'IP → investiguez.</p>
+        <p class="doc-source">Source : http_logs (24h)</p>
+    </div></span>
+{% endblock %}
 {% block content %}
 <div class="space-y-4">
     <!-- Traffic summary charts -->
@@ -18,7 +27,6 @@
         </div>
     </div>
     <div class="flex items-center gap-3 flex-wrap">
-        <h2 class="text-lg font-semibold text-white">Logs HTTP (24h)</h2>
         <select id="method-filter" class="px-2 py-1 bg-gray-800 border border-gray-700 rounded text-sm text-gray-300">
             <option value="">Toutes méthodes</option>
             <option>GET</option><option>POST</option><option>PUT</option><option>DELETE</option><option>HEAD</option><option>OPTIONS</option>