feat(cropper): move the Image Cropper into the tools app at /cropper

- Smart Photo Editor ported from id-image-bot: queue/by-ID picture
  loading, vue-croppa editing, carvekit background cleanup, nodered
  review flow, a2loft save — restyled to the tools design language
- unified login: YOUreka session identity, phone prefilled, OTP only at
  save (a2loft's requirement); artist-login step removed
- crop_image @ domain:idid OpenFGA gate on every cropper route: cached
  5-min on reads, live on save, fail closed
- credentials (minio/azure/nodered/carvekit) via env, sole exception to
  hardcoded config; 503 when unconfigured; native FormData replaces
  form-data; new deps minio + azure-storage
- 10 new tests (35 total) with fake minio/queue/nodered/removebg/a2loft

tools/public/index.html

@@ -30,14 +30,14 @@
     </div>
 
     <div class="tool-grid">
-      <a class="tool-card" href="https://smart-pxa.yrka.app" target="_blank" rel="noopener">
+      <a class="tool-card" href="/cropper">
         <span class="tool-icon">
           <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M6 2v14a2 2 0 0 0 2 2h14"/><path d="M18 22V8a2 2 0 0 0-2-2H2"/></svg>
         </span>
         <h3>Image Cropper</h3>
-        <p>Prepare and crop identity photos to the dimensions required by YOUreka profiles.</p>
+        <p>Review, crop and save identity photos submitted for YOUreka ID domain profiles.</p>
         <span class="go">Open Image Cropper
-          <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M7 17 17 7"/><path d="M8 7h9v9"/></svg>
+          <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M5 12h14"/><path d="m12 5 7 7-7 7"/></svg>
         </span>
       </a>