feat: add campaign templates and recurring schedules

src/GmRelay.Web/wwwroot/app.css

@@ -1,5 +1,5 @@
 /* ============================================
-   GM-Relay Design System v1.7.0
+   GM-Relay Design System v1.8.0
    Dark RPG Dashboard Theme
    ============================================ */
 
@@ -618,6 +618,55 @@ select option {
     white-space: nowrap;
 }
 
+/* === Campaign templates === */
+.campaign-template-panel {
+    margin-bottom: 1.5rem;
+}
+
+.campaign-template-fields {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 0.75rem;
+}
+
+.campaign-template-list {
+    margin-top: 1rem;
+    border-top: 1px solid var(--border-color);
+}
+
+.campaign-template-row {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) minmax(360px, auto);
+    gap: 1rem;
+    align-items: center;
+    padding: 1rem 0;
+    border-bottom: 1px solid var(--border-color);
+}
+
+.campaign-template-row:last-child {
+    border-bottom: none;
+    padding-bottom: 0;
+}
+
+.campaign-template-info h3 {
+    font-size: 0.9375rem;
+    margin-bottom: 0.25rem;
+    overflow-wrap: anywhere;
+}
+
+.campaign-template-info p {
+    margin: 0;
+    color: var(--text-muted);
+    font-size: 0.8125rem;
+}
+
+.campaign-template-actions {
+    display: grid;
+    grid-template-columns: minmax(190px, 1fr) auto auto;
+    gap: 0.75rem;
+    align-items: center;
+}
+
 /* === Animations === */
 @keyframes fadeIn {
     from { opacity: 0; transform: translateY(8px); }
@@ -838,11 +887,15 @@ select option {
     }
 
     .batch-bulk-fields,
-    .batch-clone-row {
+    .batch-clone-row,
+    .campaign-template-fields,
+    .campaign-template-row,
+    .campaign-template-actions {
         grid-template-columns: 1fr;
     }
 
-    .batch-clone-row .btn-gm {
+    .batch-clone-row .btn-gm,
+    .campaign-template-actions .btn-gm {
         justify-content: center;
         width: 100%;
     }