fix: enable enforce-consistent-class-order tailwind lint rule (#9428)

## Summary

Enable `better-tailwindcss/enforce-consistent-class-order` lint rule and
auto-fix all 1027 violations across 263 files. Stacked on #9427.

## Changes

- **What**: Sort Tailwind classes into consistent order via `eslint
--fix`
- Enable `enforce-consistent-class-order` as `'error'` in eslint config
- Purely cosmetic reordering — no behavioral or visual changes

## Review Focus

Mechanical auto-fix PR — all changes are class reordering only. This is
the largest diff but lowest risk since it changes no class names, only
their order.

**Stack:** #9417 → #9427 → **this PR**

Fixes #9300 (partial — 3 of 3 rules)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9428-fix-enable-enforce-consistent-class-order-tailwind-lint-rule-31a6d73d3650811c9065f5178ba3e724)
by [Unito](https://www.unito.io)

src/components/load3d/controls/PopupSlider.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="relative show-slider">
+  <div class="show-slider relative">
     <Button
       v-tooltip.right="{ value: tooltipText, showDelay: 300 }"
       size="icon"
@@ -12,7 +12,7 @@
     </Button>
     <div
       v-show="showSlider"
-      class="absolute top-0 left-12 rounded-lg bg-interface-menu-surface p-4 shadow-lg w-[150px]"
+      class="absolute top-0 left-12 w-[150px] rounded-lg bg-interface-menu-surface p-4 shadow-lg"
     >
       <Slider
         v-model="value"

src/components/load3d/controls/RecordingControls.vue

@@ -13,7 +13,7 @@
         :class="
           cn(
             'rounded-full',
-            isRecording && 'text-red-500 recording-button-blink'
+            isRecording && 'recording-button-blink text-red-500'
           )
         "
         :aria-label="