fix: replace raw HTML buttons with Button component in admin, remove vite-plugin-wasm

- Use Button component for photo remove, editor tab toggle, and model
  pill buttons across admin/users, admin/articles, admin/videos
- Remove vite-plugin-wasm from frontend devDependencies (no longer
  needed since WASM is served by the buttplug nginx container)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/frontend/src/routes/admin/articles/[id]/+page.svelte

@@ -123,15 +123,17 @@
       <div class="flex items-center justify-between">
         <Label>{$_("admin.article_form.content")}</Label>
         <div class="flex rounded-lg border border-border/40 overflow-hidden text-xs sm:hidden">
-          <button
-            type="button"
-            class={`px-3 py-1 transition-colors ${editorTab === "write" ? "bg-primary/10 text-primary" : "text-muted-foreground"}`}
-            onclick={() => (editorTab = "write")}>{$_("admin.common.write")}</button
+          <Button
+            variant="ghost"
+            size="sm"
+            class={`px-3 py-1 h-auto rounded-none transition-colors ${editorTab === "write" ? "bg-primary/10 text-primary" : "text-muted-foreground"}`}
+            onclick={() => (editorTab = "write")}>{$_("admin.common.write")}</Button
           >
-          <button
-            type="button"
-            class={`px-3 py-1 transition-colors ${editorTab === "preview" ? "bg-primary/10 text-primary" : "text-muted-foreground"}`}
-            onclick={() => (editorTab = "preview")}>{$_("admin.common.preview")}</button
+          <Button
+            variant="ghost"
+            size="sm"
+            class={`px-3 py-1 h-auto rounded-none transition-colors ${editorTab === "preview" ? "bg-primary/10 text-primary" : "text-muted-foreground"}`}
+            onclick={() => (editorTab = "preview")}>{$_("admin.common.preview")}</Button
           >
         </div>
       </div>