feat(cashier): integrate expected balance, settlement verification, and reconciliation checks

src/app/cashier/cash-history/cash-history.component.scss

@@ -79,6 +79,211 @@
   }
 }
 
+/* ── Action buttons cell ── */
+.action-btns {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 4px;
+}
+
+.btn-view {
+  color: #1e40af;
+
+  &:hover {
+    background: #eff6ff;
+  }
+}
+
+.td-note {
+  max-width: 180px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+/* ── Detail overlay ── */
+.detail-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgb(15 23 42 / 45%);
+  z-index: 1000;
+  display: flex;
+  align-items: flex-start;
+  justify-content: flex-end;
+  padding: 0;
+  backdrop-filter: blur(2px);
+}
+
+.detail-panel {
+  width: 480px;
+  max-width: 100vw;
+  height: 100vh;
+  background: #fff;
+  display: flex;
+  flex-direction: column;
+  overflow-y: auto;
+  box-shadow: -4px 0 24px rgb(0 0 0 / 15%);
+
+  &__head {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 20px 20px 16px;
+    border-bottom: 1px solid #e2e8f0;
+    position: sticky;
+    top: 0;
+    background: #fff;
+    z-index: 1;
+  }
+
+  &__title {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+
+    mat-icon {
+      font-size: 22px;
+      height: 22px;
+      width: 22px;
+      color: #1e40af;
+    }
+  }
+
+  &__type {
+    display: block;
+    font-size: 12px;
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 0.06em;
+    color: #64748b;
+  }
+
+  &__id {
+    font-size: 18px;
+    font-weight: 800;
+    color: #0f172a;
+  }
+
+  &__close {
+    background: none;
+    border: none;
+    cursor: pointer;
+    padding: 4px;
+    border-radius: 6px;
+    display: flex;
+    align-items: center;
+    color: #64748b;
+
+    &:hover {
+      background: #f1f5f9;
+      color: #0f172a;
+    }
+
+    mat-icon {
+      font-size: 20px;
+      height: 20px;
+      width: 20px;
+    }
+  }
+}
+
+/* ── Meta grid ── */
+.detail-meta {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 0;
+  padding: 16px 20px;
+  border-bottom: 1px solid #f1f5f9;
+
+  &__item {
+    padding: 8px 4px;
+    border-bottom: 1px solid #f8fafc;
+
+    &--full {
+      grid-column: 1 / -1;
+    }
+  }
+
+  &__label {
+    display: block;
+    font-size: 10px;
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 0.06em;
+    color: #94a3b8;
+    margin-bottom: 2px;
+  }
+
+  &__val {
+    font-size: 13px;
+    font-weight: 500;
+    color: #1e293b;
+
+    &--amount {
+      font-size: 16px;
+      font-weight: 800;
+      color: #0f172a;
+    }
+  }
+}
+
+/* ── Reversal info ── */
+.detail-reversal {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 10px 20px;
+  background: #fef2f2;
+  border-bottom: 1px solid #fecaca;
+  font-size: 12px;
+  color: #991b1b;
+
+  mat-icon {
+    font-size: 18px;
+    height: 18px;
+    width: 18px;
+    color: #dc2626;
+    flex-shrink: 0;
+  }
+
+  &__reason {
+    opacity: 0.8;
+  }
+}
+
+/* ── Denomination section ── */
+.detail-denom-head {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 14px 20px 8px;
+  font-size: 11px;
+  font-weight: 800;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: #1e40af;
+
+  mat-icon {
+    font-size: 16px;
+    height: 16px;
+    width: 16px;
+  }
+}
+
+.detail-denom-table {
+  margin: 0 20px 20px;
+  width: calc(100% - 40px);
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.detail-denom-total td {
+  background: #f8fafc;
+  border-top: 2px solid #e2e8f0;
+}
+
 .pg-btn--danger {
   background: linear-gradient(135deg, #ef4444, #b91c1c);
   color: #fff;