feat(usage): add customizable fixed row height settings

- Add a display setting to enable or disable fixed record heights
- Allow users to adjust row height with a draggable slider
- Persist row height preferences across sessions
- Improve display settings layout and translations

src/styles.css

@@ -9622,6 +9622,97 @@ textarea:focus-visible {
   line-height: 1.5;
 }
 
+.usage-row-height-settings {
+  display: grid;
+  gap: 12px;
+  margin: 0 0 16px;
+  padding: 14px 16px;
+  border: 1px solid var(--border-color);
+  border-radius: 10px;
+  background: var(--bg-tertiary);
+}
+
+.usage-row-height-heading,
+.usage-row-height-control {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+}
+
+.usage-row-height-heading {
+  justify-content: space-between;
+}
+
+.usage-row-height-heading > div {
+  display: grid;
+  gap: 3px;
+}
+
+.usage-row-height-heading strong,
+.usage-row-height-control label {
+  color: var(--text-primary);
+  font-size: var(--font-size-body);
+  font-weight: var(--font-weight-semibold);
+}
+
+.usage-row-height-heading span,
+.usage-row-height-hint {
+  color: var(--text-secondary);
+  font-size: var(--font-size-caption);
+}
+
+.usage-settings-switch {
+  display: inline-flex;
+  align-items: center;
+  gap: 7px;
+  border: 0;
+  background: transparent;
+  color: var(--text-secondary);
+  font-size: var(--font-size-caption);
+  cursor: pointer;
+}
+
+.usage-settings-switch > span:first-child {
+  position: relative;
+  width: 34px;
+  height: 20px;
+  border-radius: 999px;
+  background: var(--border-primary);
+  transition: background .15s ease;
+}
+
+.usage-settings-switch > span:first-child::after {
+  position: absolute;
+  top: 3px;
+  left: 3px;
+  width: 14px;
+  height: 14px;
+  border-radius: 50%;
+  background: #fff;
+  content: '';
+  transition: transform .15s ease;
+}
+
+.usage-settings-switch.active > span:first-child { background: var(--ui-accent); }
+.usage-settings-switch.active > span:first-child::after { transform: translateX(14px); }
+
+.usage-row-height-control {
+  flex-wrap: wrap;
+}
+
+.usage-row-height-control input[type='range'] {
+  flex: 1 1 180px;
+  accent-color: var(--ui-accent);
+}
+
+.usage-row-height-control output {
+  min-width: 42px;
+  color: var(--text-primary);
+  font-variant-numeric: tabular-nums;
+  font-size: var(--font-size-caption);
+  text-align: right;
+}
+
 .usage-column-options {
   display: grid;
   min-height: 0;
@@ -10017,6 +10108,20 @@ body.table-col-resizing * {
     grid-template-columns: 1fr;
   }
 
+  .usage-row-height-heading {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+
+  .usage-row-height-control {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+
+  .usage-row-height-control input[type='range'] {
+    width: 100%;
+  }
+
   .usage-column-dialog-footer {
     align-items: stretch;
     flex-direction: column;