feat: show relative Z in Screws Tilt Adjust dialog

src/components/common/ScrewsTiltAdjustDialog.vue

@@ -27,6 +27,10 @@
             </td>
             <td class="focus--text text-right">
               {{ screw.z.toFixed(4) }}
+              <small
+                v-if="screw.relativeZ != null"
+                class="secondary--text"
+              >({{ screw.relativeZ.toFixed(4) }})</small>
             </td>
             <td class="text-right">
               <v-chip

src/store/printer/getters.ts

@@ -946,6 +946,14 @@ export const getters = {
       }
     }
 
+    const baseZ = screws.find(screw => screw.is_base)?.z
+
+    if (baseZ != null) {
+      for (const screw of screws) {
+        screw.relativeZ = screw.z - baseZ
+      }
+    }
+
     return {
       ...rest,
       screws

src/store/printer/types.ts

@@ -1516,6 +1516,7 @@ export interface ScrewsTiltAdjustScrew {
   name: string;
   prettyName: string;
   adjustMinutes: number;
+  relativeZ?: number;
   x: number;
   y: number;
   z: number;