feat(v0.1.4): SMART tile icon, IP locale robuste, copier HTTP, nettoyage UI

- Agent: détection IP via server_ip en priorité (fallback 8.8.8.8) — résout 0.0.0.0 sur LAN sans internet
- Agent: détection auto des disques /sys/block (sd*, nvme*) + fix continue dans la boucle smartctl
- Agent: SupplementaryGroups=disk dans le service systemd pour accès smartctl
- Dashboard: icône SMART (shield-check/triangle-exclamation) dans la ligne disque de la tuile
- Dashboard: bouton Copier compatible HTTP (fallback execCommand si clipboard API indisponible)
- Dashboard: suppression du texte redondant dans la section INSTALLATION AGENT

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dashboard/js/popups.js

@@ -331,7 +331,6 @@ const Popups = (() => {
           <div style="display:flex;flex-direction:column;gap:8px">
             <div class="scfg-sec-title">INSTALLATION AGENT</div>
             <div class="scfg-row" style="flex-direction:column;align-items:stretch;gap:6px">
-              <label style="font-size:0.85em;color:var(--fg2)">Commande curl — copiez et lancez en root sur la machine cible</label>
               <div style="display:flex;gap:6px;align-items:center">
                 <input type="text" id="s-install-cmd" readonly
                   style="flex:1;font-family:var(--font-mono);font-size:0.78em;padding:6px 8px;
@@ -339,7 +338,7 @@ const Popups = (() => {
                          color:var(--fg);cursor:text;min-width:0"
                   value="SERVER_IP=${window.location.hostname} curl -fsSL https://git.maison43gil.com/gilles/nano_metrics/raw/branch/main/deploy/install.sh | sudo bash">
                 <button class="btn" style="padding:5px 10px;font-size:0.8em;white-space:nowrap"
-                  onclick="navigator.clipboard.writeText(document.getElementById('s-install-cmd').value).then(()=>{this.textContent='✓ Copié';setTimeout(()=>this.textContent='Copier',1500)})">Copier</button>
+                  onclick="Popups._copyInstallCmd(this)">Copier</button>
               </div>
             </div>
           </div>`;
@@ -450,10 +449,31 @@ const Popups = (() => {
         }
     }
 
+    function _copyInstallCmd(btn) {
+        const text = document.getElementById('s-install-cmd').value;
+        const done = () => { btn.textContent = '✓ Copié'; setTimeout(() => btn.textContent = 'Copier', 1500); };
+        if (navigator.clipboard && navigator.clipboard.writeText) {
+            navigator.clipboard.writeText(text).then(done).catch(() => _copyFallback(text, done));
+        } else {
+            _copyFallback(text, done);
+        }
+    }
+
+    function _copyFallback(text, cb) {
+        const ta = document.createElement('textarea');
+        ta.value = text;
+        ta.style.cssText = 'position:fixed;opacity:0;top:0;left:0';
+        document.body.appendChild(ta);
+        ta.focus();
+        ta.select();
+        try { document.execCommand('copy'); cb(); } catch (_) {}
+        document.body.removeChild(ta);
+    }
+
     return {
         showDetail, hideDetail,
         showAgentCfg, sendAgentConfig, toggleCbox,
         showSrvCfg, hideSrvCfg, saveSrvCfg, confirmDeleteAgent, doDeleteAgent,
-        showSmart,
+        showSmart, _copyInstallCmd,
     };
 })();