feat(frontend): enable downloads on Other page and default_other_roots settings UI

static/js/api/otherApi.js

@@ -4,4 +4,42 @@ import { BaseModelApiClient } from './baseModelApi.js';
  * Other-models-specific API client (VAE, upscalers, text encoders, etc.)
  */
 export class OtherApiClient extends BaseModelApiClient {
+    /**
+     * Get other-model roots, optionally narrowed to one sub_type
+     * (vae/upscaler/text_encoder/clip_vision/controlnet).
+     *
+     * Without a sub_type this falls back to the merged roots list
+     * (GET /api/lm/other/roots); with one it reads the grouped
+     * roots_by_subtype map and extracts the matching list.
+     */
+    async fetchModelRoots(subType = null) {
+        if (!subType) {
+            return super.fetchModelRoots();
+        }
+
+        const data = await this.fetchRootsBySubType();
+        const groupedRoots = data.roots_by_subtype || {};
+        return {
+            success: data.success !== false,
+            roots: groupedRoots[subType] || [],
+        };
+    }
+
+    /**
+     * Get other-model roots grouped by sub_type.
+     * GET /api/lm/other/roots_by_subtype
+     *   -> { success, roots_by_subtype: {sub_type: [...]} }
+     */
+    async fetchRootsBySubType() {
+        try {
+            const response = await fetch(this.apiConfig.endpoints.specific.roots_by_subtype);
+            if (!response.ok) {
+                throw new Error('Failed to fetch other-model roots by sub_type');
+            }
+            return await response.json();
+        } catch (error) {
+            console.error('Error fetching other-model roots by sub_type:', error);
+            throw error;
+        }
+    }
 }