feat(base/profile): compress avatar uploads with tight 512px cap

Pass tuned compress options to <ImageUpload>: 512px max edge / 200 KB
target. Avatars don't need 1920px and the smaller cap meaningfully
reduces pict-rs storage for a high-volume content type. Closes #59
for the profile consumer.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/modules/base/components/ProfileSettings.vue

@@ -30,7 +30,9 @@
               <User class="h-10 w-10 text-muted-foreground" />
             </div>
 
-            <!-- Upload component -->
+            <!-- Upload component. Avatars are small; tighten the
+                 default compress knobs so a 4K phone photo lands as
+                 a ~200 KB 512px WebP. -->
             <ImageUpload
               v-model="uploadedPicture"
               :multiple="false"
@@ -38,6 +40,7 @@
               :max-size-mb="5"
               :disabled="isUpdating"
               :allow-camera="true"
+              :compress="{ maxWidthOrHeight: 512, maxSizeMB: 0.2 }"
               placeholder="Upload picture"
               accept="image/*"
             />