feat(outbound): add voice announcement on trunk congestion & clarify MoH options

public/assets/app.js

@@ -2561,14 +2561,30 @@ function openOutboundRouteModal(route = null) {
     const recMode = route ? route.record_mode : 'dontcare';
     form.querySelectorAll('input[name="record_mode"]').forEach(r => r.checked = (r.value === recMode));
 
-    // Destination sur congestion
+    // Destination sur congestion / Trunks indisponibles
     const congSel = document.getElementById('ob-congestion-dest-select');
     if (congSel) {
-        congSel.innerHTML = `
-            <option value="terminate-congestion" ${(!route || route.congestion_dest === 'terminate-congestion') ? 'selected' : ''}>Congestion (Tonalité réseau saturé)</option>
-            <option value="terminate-busy" ${route?.congestion_dest === 'terminate-busy' ? 'selected' : ''}>Busy (Occupation définitive)</option>
-            <option value="terminate-hangup" ${route?.congestion_dest === 'terminate-hangup' ? 'selected' : ''}>Hangup (Raccrocher)</option>
+        const curCong = route ? route.congestion_dest : 'all-circuits-busy';
+        let congOpts = `
+            <optgroup label="📢 Messages Vocaux (Recommandé)">
+                <option value="all-circuits-busy" ${(curCong === 'all-circuits-busy' || (!route && curCong !== 'terminate-congestion')) ? 'selected' : ''}>📢 Message vocal standard (« Toutes les lignes sont occupées »)</option>
         `;
+        const annSounds = (appState.sounds || []).filter(s => s.usage_type !== 'moh');
+        if (annSounds.length > 0) {
+            annSounds.forEach(s => {
+                const val = `sound-${s.id}`;
+                congOpts += `<option value="${val}" ${curCong === val ? 'selected' : ''}>🎙️ Annonce : ${escapeHtml(s.name)}</option>`;
+            });
+        }
+        congOpts += `
+            </optgroup>
+            <optgroup label="📴 Tonalités & Raccrochage">
+                <option value="terminate-congestion" ${curCong === 'terminate-congestion' ? 'selected' : ''}>Tonalité de Congestion (Bip rapide réseau saturé)</option>
+                <option value="terminate-busy" ${curCong === 'terminate-busy' ? 'selected' : ''}>Tonalité d'Occupation (Bip occupé)</option>
+                <option value="terminate-hangup" ${curCong === 'terminate-hangup' ? 'selected' : ''}>Raccrocher immédiatement</option>
+            </optgroup>
+        `;
+        congSel.innerHTML = congOpts;
     }
 
     // Musique d'attente (MOH)
@@ -2576,7 +2592,7 @@ function openOutboundRouteModal(route = null) {
     if (mohSel) {
         const curMoh = route ? (route.moh_class || 'default') : 'default';
         const mohSounds = (appState.sounds || []).filter(s => s.usage_type === 'moh');
-        let mohOpts = `<option value="default" ${curMoh === 'default' ? 'selected' : ''}>Défaut (Standard)</option>`;
+        let mohOpts = `<option value="default" ${curMoh === 'default' ? 'selected' : ''}>🌐 Hériter du Trunk / Global (Recommandé)</option>`;
         mohSounds.forEach(s => {
             const sSlug = slugifyTrunkName(s.site_category || 'global');
             const cName = (sSlug === 'global' || sSlug === 'default') ? 'default' : `moh-${sSlug}`;