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/maskeditor/MaskEditorContent.vue

@@ -13,29 +13,29 @@
     >
       <canvas
         ref="imgCanvasRef"
-        class="absolute top-0 left-0 size-full z-0"
+        class="absolute top-0 left-0 z-0 size-full"
         @contextmenu.prevent
       />
       <canvas
         ref="rgbCanvasRef"
-        class="absolute top-0 left-0 size-full z-10"
+        class="absolute top-0 left-0 z-10 size-full"
         @contextmenu.prevent
       />
       <canvas
         ref="maskCanvasRef"
-        class="absolute top-0 left-0 size-full z-30"
+        class="absolute top-0 left-0 z-30 size-full"
         @contextmenu.prevent
       />
       <!-- GPU Preview Canvas -->
       <canvas
         ref="gpuCanvasRef"
-        class="absolute top-0 left-0 size-full pointer-events-none"
+        class="pointer-events-none absolute top-0 left-0 size-full"
         :class="{
           'z-20': store.activeLayer === 'rgb',
           'z-40': store.activeLayer === 'mask'
         }"
       />
-      <div ref="canvasBackgroundRef" class="bg-white size-full" />
+      <div ref="canvasBackgroundRef" class="size-full bg-white" />
     </div>
 
     <div class="maskEditor-ui-container flex min-h-0 flex-1 flex-col">