feat(history): add Recently Completed section to frontend dashboard

public/style.css

@@ -552,6 +552,208 @@ body {
   word-break: break-word;
 }
 
+/* ===== Recently Completed History ===== */
+.history-container {
+  max-width: 1200px;
+  margin: 24px auto 0;
+  padding: 0 16px;
+}
+
+.history-header {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  margin-bottom: 12px;
+  flex-wrap: wrap;
+}
+
+.history-header h2 {
+  margin: 0;
+  font-size: 1.2rem;
+  color: var(--text-primary);
+  flex: 1 1 auto;
+}
+
+.history-controls {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  flex-wrap: nowrap;
+}
+
+.history-days-label {
+  font-size: 0.85rem;
+  color: var(--text-secondary);
+}
+
+.history-days-input {
+  width: 52px;
+  padding: 3px 6px;
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  background: var(--surface);
+  color: var(--text-primary);
+  font-size: 0.85rem;
+  text-align: center;
+}
+
+.history-refresh-btn {
+  background: none;
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  color: var(--text-secondary);
+  cursor: pointer;
+  font-size: 1rem;
+  padding: 2px 7px;
+  line-height: 1.4;
+  transition: background 0.15s, color 0.15s;
+}
+
+.history-refresh-btn:hover {
+  background: var(--hover-bg);
+  color: var(--text-primary);
+}
+
+.history-loading,
+.history-error,
+.no-history {
+  color: var(--text-secondary);
+  font-size: 0.9rem;
+  padding: 8px 0;
+}
+
+.history-error {
+  color: var(--error, #e74c3c);
+}
+
+.history-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.history-card {
+  display: flex;
+  gap: 12px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 10px 12px;
+  transition: background 0.2s;
+  align-items: flex-start;
+}
+
+.history-card.failed {
+  border-left: 3px solid var(--error, #e74c3c);
+}
+
+.history-card.imported {
+  border-left: 3px solid var(--success, #27ae60);
+}
+
+.history-cover {
+  flex: 0 0 48px;
+  width: 48px;
+}
+
+.history-cover img {
+  width: 48px;
+  height: 68px;
+  object-fit: cover;
+  border-radius: 4px;
+  display: block;
+}
+
+.history-info {
+  flex: 1 1 auto;
+  min-width: 0;
+}
+
+.history-card-header {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 5px;
+  align-items: center;
+  margin-bottom: 4px;
+}
+
+.history-type-badge,
+.history-outcome-badge,
+.history-instance-badge {
+  font-size: 0.72rem;
+  font-weight: 600;
+  padding: 2px 7px;
+  border-radius: 10px;
+  white-space: nowrap;
+}
+
+.history-type-badge.series {
+  background: var(--badge-series-bg, #2980b9);
+  color: #fff;
+}
+
+.history-type-badge.movie {
+  background: var(--badge-movie-bg, #8e44ad);
+  color: #fff;
+}
+
+.history-outcome-badge.imported {
+  background: var(--success, #27ae60);
+  color: #fff;
+}
+
+.history-outcome-badge.failed {
+  background: var(--error, #e74c3c);
+  color: #fff;
+}
+
+.history-instance-badge {
+  background: var(--tag-bg, #ecf0f1);
+  color: var(--text-secondary);
+  border: 1px solid var(--border);
+}
+
+.history-title {
+  font-size: 0.9rem;
+  font-weight: 600;
+  margin: 0 0 2px;
+  color: var(--text-primary);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.history-media-name {
+  font-size: 0.82rem;
+  color: var(--text-secondary);
+  margin: 0 0 4px;
+}
+
+.history-details {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 5px;
+  margin-top: 4px;
+}
+
+.history-failure-message {
+  font-size: 0.78rem;
+  color: var(--error, #e74c3c);
+  background: var(--error-bg, rgba(231, 76, 60, 0.08));
+  border-radius: 4px;
+  padding: 3px 7px;
+  flex-basis: 100%;
+}
+
+@media (max-width: 480px) {
+  .history-cover {
+    display: none;
+  }
+  .history-title {
+    white-space: normal;
+  }
+}
+
 /* ===== Footer ===== */
 .app-footer {
   margin-top: 12px;