feat: move currency dropdown inline with cost field

Layout now shows: [Default shipping cost] [Currency ▼]

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

templates/nostrmarket/components/shipping-zones.html

@@ -48,30 +48,36 @@
           label="Countries"
           v-model="zoneDialog.data.countries"
         ></q-select>
-        <q-select
-          :disabled="!!zoneDialog.data.id"
-          :readonly="!!zoneDialog.data.id"
-          filled
-          dense
-          v-model="zoneDialog.data.currency"
-          type="text"
-          label="Currency"
-          :options="currencies"
-        ></q-select>
-        <q-input
-          filled
-          dense
-          label="Default shipping cost"
-          fill-mask="0"
-          reverse-fill-mask
-          :step="zoneDialog.data.currency != 'sat' ? '0.01' : '1'"
-          type="number"
-          v-model.trim="zoneDialog.data.cost"
-          :suffix="zoneDialog.data.currency"
-          :error="zoneDialog.data.currency === 'sat' && zoneDialog.data.cost % 1 !== 0"
-          error-message="Satoshis must be whole numbers"
-          hint="Additional costs can be set per product"
-        ></q-input>
+        <div class="row q-col-gutter-sm">
+          <div class="col">
+            <q-input
+              filled
+              dense
+              label="Default shipping cost"
+              fill-mask="0"
+              reverse-fill-mask
+              :step="zoneDialog.data.currency != 'sat' ? '0.01' : '1'"
+              type="number"
+              v-model.trim="zoneDialog.data.cost"
+              :error="zoneDialog.data.currency === 'sat' && zoneDialog.data.cost % 1 !== 0"
+              error-message="Satoshis must be whole numbers"
+              hint="Additional costs can be set per product"
+            ></q-input>
+          </div>
+          <div class="col-auto">
+            <q-select
+              :disabled="!!zoneDialog.data.id"
+              :readonly="!!zoneDialog.data.id"
+              filled
+              dense
+              v-model="zoneDialog.data.currency"
+              type="text"
+              label="Currency"
+              :options="currencies"
+              style="min-width: 100px"
+            ></q-select>
+          </div>
+        </div>
         <div class="row q-mt-lg">
           <div v-if="zoneDialog.data.id">
             <q-btn unelevated color="primary" type="submit">Update</q-btn>