fix: timing flash + couleur idle LED + diagnostic auto-brightness

frontend/templates/admin/print.html

@@ -52,10 +52,13 @@
 .printer-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
 .btn-xs { padding: .3rem .65rem; font-size: .8rem; border: none; border-radius: 6px; cursor: pointer; font-weight: 600; transition: opacity .2s; }
 .btn-xs:hover { opacity: .8; }
-.btn-enable  { background: #1a7340; color: #fff; }
-.btn-disable { background: #784700; color: #fff; }
-.btn-clear   { background: #7a0000; color: #fff; }
-.btn-reject  { background: #555; color: #fff; }
+.btn-enable   { background: #1a7340; color: #fff; }
+.btn-disable  { background: #784700; color: #fff; }
+.btn-clear    { background: #7a0000; color: #fff; }
+.btn-reject   { background: #555; color: #fff; }
+.btn-exclude  { background: #4a2080; color: #fff; }
+.btn-include  { background: #205080; color: #fff; }
+.bs-excluded  { background: rgba(100,40,160,.2); color: #b085f0; border: 1px solid rgba(100,40,160,.3); }
 
 /* Jobs CUPS détaillés */
 .cups-jobs { font-size: .82rem; }
@@ -131,10 +134,13 @@
           <span class="badge-printer badge-state bs-{{ p.state }}">
             {% if p.state == 'idle' %}✅ Disponible
             {% elif p.state == 'printing' %}🖨 En impression
-            {% elif p.state == 'disabled' %}⏸ Désactivée
+            {% elif p.state == 'disabled' %}⏸ Désactivée CUPS
             {% elif p.state == 'offline' %}❌ Hors ligne
             {% else %}❓ {{ p.state }}{% endif %}
           </span>
+          {% if p.excluded %}
+          <span class="badge-printer bs-excluded">🚫 Exclue du load-balancing</span>
+          {% endif %}
           <span class="badge-printer badge-accept {{ 'bs-accept' if p.accepting else 'bs-reject' }}">
             {{ '✓ Accepte les jobs' if p.accepting else '✗ Refuse les jobs' }}
           </span>
@@ -193,15 +199,20 @@
         <!-- Actions imprimante -->
         <div class="printer-actions">
           {% if p.state == 'disabled' %}
-          <button class="btn-xs btn-enable" onclick="printerAction('{{ p.name }}','enable')">▶ Activer</button>
+          <button class="btn-xs btn-enable" onclick="printerAction('{{ p.name }}','enable')">▶ Activer CUPS</button>
           {% else %}
-          <button class="btn-xs btn-disable" onclick="printerAction('{{ p.name }}','disable')">⏸ Désactiver</button>
+          <button class="btn-xs btn-disable" onclick="printerAction('{{ p.name }}','disable')">⏸ Désactiver CUPS</button>
           {% endif %}
           {% if p.accepting %}
           <button class="btn-xs btn-reject" onclick="printerAction('{{ p.name }}','reject')">🚫 Refuser jobs</button>
           {% else %}
           <button class="btn-xs btn-enable" onclick="printerAction('{{ p.name }}','enable')">✓ Accepter jobs</button>
           {% endif %}
+          {% if p.excluded %}
+          <button class="btn-xs btn-include" onclick="setExcluded('{{ p.name }}', false)">✓ Réintégrer</button>
+          {% else %}
+          <button class="btn-xs btn-exclude" onclick="setExcluded('{{ p.name }}', true)">🚫 Exclure</button>
+          {% endif %}
           {% if p.jobs_count %}
           <button class="btn-xs btn-clear" onclick="clearJobs('{{ p.name }}')">✕ Vider file</button>
           {% endif %}
@@ -426,16 +437,33 @@ async function refreshPrinters() {
         acceptBadge.textContent = p.accepting ? '✓ Accepte les jobs' : '✗ Refuse les jobs';
       }
 
+      // Badge excluded
+      const statesDiv = card.querySelector('.printer-states');
+      if (statesDiv) {
+        const excBadge = statesDiv.querySelector('.bs-excluded');
+        if (p.excluded && !excBadge) {
+          const b = document.createElement('span');
+          b.className = 'badge-printer bs-excluded';
+          b.textContent = '🚫 Exclue du load-balancing';
+          statesDiv.appendChild(b);
+        } else if (!p.excluded && excBadge) {
+          excBadge.remove();
+        }
+      }
+
       // Boutons actions
       const actionsDiv = card.querySelector('.printer-actions');
       if (actionsDiv) {
         actionsDiv.innerHTML = `
           ${p.state === 'disabled'
-            ? `<button class="btn-xs btn-enable" onclick="printerAction('${p.name}','enable')">▶ Activer</button>`
-            : `<button class="btn-xs btn-disable" onclick="printerAction('${p.name}','disable')">⏸ Désactiver</button>`}
+            ? `<button class="btn-xs btn-enable" onclick="printerAction('${p.name}','enable')">▶ Activer CUPS</button>`
+            : `<button class="btn-xs btn-disable" onclick="printerAction('${p.name}','disable')">⏸ Désactiver CUPS</button>`}
           ${p.accepting
             ? `<button class="btn-xs btn-reject" onclick="printerAction('${p.name}','reject')">🚫 Refuser jobs</button>`
             : `<button class="btn-xs btn-enable" onclick="printerAction('${p.name}','enable')">✓ Accepter jobs</button>`}
+          ${p.excluded
+            ? `<button class="btn-xs btn-include" onclick="setExcluded('${p.name}',false)">✓ Réintégrer</button>`
+            : `<button class="btn-xs btn-exclude" onclick="setExcluded('${p.name}',true)">🚫 Exclure</button>`}
           ${p.jobs_count ? `<button class="btn-xs btn-clear" onclick="clearJobs('${p.name}')">✕ Vider file</button>` : ''}
         `;
       }
@@ -472,6 +500,14 @@ async function printerAction(name, action) {
   } catch(err) { showToast('Erreur : ' + err.message, 'error'); }
 }
 
+async function setExcluded(name, excluded) {
+  try {
+    await api('POST', `/api/print/printers/${name}/set-excluded?excluded=${excluded}`);
+    showToast(excluded ? `🚫 ${name} exclue du load-balancing` : `✓ ${name} réintégrée`, excluded ? 'info' : 'success');
+    setTimeout(refreshPrinters, 400);
+  } catch(err) { showToast('Erreur : ' + err.message, 'error'); }
+}
+
 async function clearJobs(printer) {
   if (!confirm(`Vider toute la file CUPS de ${printer} ?`)) return;
   try {

frontend/templates/admin/settings.html

@@ -394,6 +394,16 @@ select.field {
           <p id="auto-brightness-status" style="font-size:.78rem; color:var(--text-muted); margin-top:.5rem;">
             &#x23F3; Chargement…
           </p>
+          <div style="display:flex; gap:.5rem; align-items:center; margin-top:.5rem; flex-wrap:wrap;">
+            <button class="btn btn-ghost btn-sm" onclick="measureAmbient()" id="btn-measure-lux">
+              &#x1F4F7; Tester la mesure
+            </button>
+            <span id="lux-status" style="font-size:.8rem; color:var(--text-muted);"></span>
+          </div>
+          <div id="lux-info" style="font-size:.78rem; margin-top:.4rem; color:var(--text-muted); display:none;">
+            Luminosité mesurée : <strong id="lux-val">—</strong> / 255 &nbsp;→&nbsp;
+            <span id="lux-desc">—</span>
+          </div>
         </div>
       </div>
     </div>
@@ -875,6 +885,37 @@ async function loadFlashConfig() {
   } catch(e) { console.warn('loadFlashConfig:', e); }
 }
 
+async function measureAmbient() {
+  const btn = document.getElementById('btn-measure-lux');
+  const status = document.getElementById('lux-status');
+  const info = document.getElementById('lux-info');
+  btn.disabled = true;
+  status.textContent = '⏳ Mesure en cours…';
+  status.style.color = 'var(--text-muted)';
+  try {
+    const r = await api('POST', '/api/leds/measure-ambient');
+    if (r.ok) {
+      document.getElementById('lux-val').textContent = r.ambient_lux;
+      document.getElementById('lux-desc').textContent = r.description;
+      info.style.display = '';
+      status.textContent = '✅ Mesure réussie';
+      status.style.color = '#4caf50';
+      showToast(`✅ Luminosité : ${r.ambient_lux} — ${r.description}`, 'success');
+    } else {
+      status.textContent = '❌ ' + (r.error || 'Erreur inconnue');
+      status.style.color = '#e05050';
+      showToast('❌ Mesure impossible : ' + r.error, 'error');
+    }
+  } catch(e) {
+    status.textContent = '❌ Liveview inaccessible';
+    status.style.color = '#e05050';
+    showToast('❌ Liveview inaccessible (endpoint 404). Vérifiez que photobooth-app est démarré.', 'error');
+  } finally {
+    btn.disabled = false;
+    setTimeout(() => { status.textContent = ''; }, 6000);
+  }
+}
+
 async function setAutoBrightness(enabled) {
   try {
     await api('PUT', `/api/leds/auto-brightness?enabled=${enabled}`);