feat(settings): show default root cue in download root rules editor

Each rule group now shows which root is the type's default ('Default:
{root} — unmatched downloads go here'), and the default root's option in
the per-rule root dropdown carries a '(default)' suffix. Comparison is
deliberately loose (separators, trailing slashes, case) since this is
display-only. Changing a default root select in the Library section
re-renders the rules editor so the cue never goes stale.

locales/de.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/en.json

@@ -499,6 +499,8 @@
       "title": "Download Root Rules",
       "help": "Route downloads to a different root folder based on the model's base model.",
       "description": "Rules are checked in order. First match wins; unmatched downloads use the default root.",
+      "defaultHint": "Default: {root} — unmatched downloads go here",
+      "defaultSuffix": "default",
       "addRule": "Add rule",
       "removeRule": "Remove rule",
       "moveUp": "Move up",

locales/es.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/fr.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/he.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/ja.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/ko.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/ru.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/zh-CN.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

locales/zh-TW.json

@@ -499,6 +499,8 @@
             "title": "[TODO: Translate] Download Root Rules",
             "help": "[TODO: Translate] Route downloads to a different root folder based on the model's base model.",
             "description": "[TODO: Translate] Rules are checked in order. First match wins; unmatched downloads use the default root.",
+            "defaultHint": "[TODO: Translate] Default: {root} — unmatched downloads go here",
+            "defaultSuffix": "[TODO: Translate] default",
             "addRule": "[TODO: Translate] Add rule",
             "removeRule": "[TODO: Translate] Remove rule",
             "moveUp": "[TODO: Translate] Move up",

static/css/components/modal/settings-modal.css

@@ -686,6 +686,11 @@
     padding: 4px 0;
 }
 
+.download-root-rule-default-hint {
+    padding-top: 0;
+    overflow-wrap: anywhere;
+}
+
 .download-root-rule-panel {
     margin-top: var(--space-1);
 }

static/js/managers/SettingsManager.js

@@ -59,6 +59,20 @@ const DOWNLOAD_ROOT_RULE_ROOT_ENDPOINTS = {
     embeddings: '/api/lm/embeddings/roots',
 };
 
+// Rule type -> the settings key holding that type's default download root.
+const DOWNLOAD_ROOT_RULE_DEFAULT_ROOT_SETTINGS = {
+    loras: 'default_lora_root',
+    checkpoints: 'default_checkpoint_root',
+    unet: 'default_unet_root',
+    embeddings: 'default_embedding_root',
+};
+
+// Setting keys whose change must refresh the download root rules editor
+// (it shows which root is the default for each type).
+const DOWNLOAD_ROOT_RULE_DEFAULT_SETTING_KEYS = new Set(
+    Object.values(DOWNLOAD_ROOT_RULE_DEFAULT_ROOT_SETTINGS)
+);
+
 export class SettingsManager {
     constructor() {
         this.initialized = false;
@@ -3257,6 +3271,12 @@ export class SettingsManager {
             // Apply frontend settings immediately
             this.applyFrontendSettings();
 
+            // The download root rules editor marks each type's default root;
+            // refresh it when a default root select changes.
+            if (DOWNLOAD_ROOT_RULE_DEFAULT_SETTING_KEYS.has(settingKey)) {
+                this.renderDownloadRootRules();
+            }
+
             // Recalculate layout when display density changes
             if (settingKey === 'display_density' && state.virtualScroller) {
                 state.virtualScroller.calculateLayout();
@@ -4469,7 +4489,7 @@ export class SettingsManager {
 
     renderDownloadRootRules() {
         const container = document.getElementById('downloadRootRulesContainer');
-        if (!container) {
+        if (!container || !this.downloadRootRuleRoots) {
             return;
         }
         container.innerHTML = '';
@@ -4478,6 +4498,24 @@ export class SettingsManager {
         });
     }
 
+    getDownloadRootRuleDefaultRoot(typeKey) {
+        const settingKey = DOWNLOAD_ROOT_RULE_DEFAULT_ROOT_SETTINGS[typeKey];
+        const value = settingKey ? state.global.settings[settingKey] : '';
+        return typeof value === 'string' ? value.trim() : '';
+    }
+
+    // Loose display-only comparison: separator, trailing slash and case
+    // differences must not hide the "(default)" cue.
+    isDownloadRootRuleDefaultRoot(root, defaultRoot) {
+        const normalize = (value) => String(value || '')
+            .replace(/\\/g, '/')
+            .replace(/\/+$/, '')
+            .toLowerCase();
+        const normalizedRoot = normalize(root);
+        const normalizedDefault = normalize(defaultRoot);
+        return !!normalizedRoot && !!normalizedDefault && normalizedRoot === normalizedDefault;
+    }
+
     buildDownloadRootRuleGroup(typeKey) {
         const group = document.createElement('div');
         group.className = 'download-root-rule-group';
@@ -4496,6 +4534,18 @@ export class SettingsManager {
             return group;
         }
 
+        const defaultRoot = this.getDownloadRootRuleDefaultRoot(typeKey);
+        if (defaultRoot) {
+            const defaultHint = document.createElement('div');
+            defaultHint.className = 'download-root-rules-hint download-root-rule-default-hint';
+            defaultHint.textContent = translate(
+                'settings.downloadRootRules.defaultHint',
+                { root: defaultRoot },
+                `Default: ${defaultRoot} — unmatched downloads go here`
+            );
+            group.appendChild(defaultHint);
+        }
+
         const rules = this.getDownloadRootRules()[typeKey];
         rules.forEach((rule, index) => {
             group.appendChild(this.buildDownloadRootRuleRow(typeKey, rule, index, false, roots));
@@ -4548,10 +4598,13 @@ export class SettingsManager {
 
         const rootSelect = document.createElement('select');
         rootSelect.className = 'base-model-select download-root-rule-root';
+        const defaultRoot = this.getDownloadRootRuleDefaultRoot(typeKey);
         roots.forEach((root) => {
             const option = document.createElement('option');
             option.value = root;
-            option.textContent = root;
+            option.textContent = this.isDownloadRootRuleDefaultRoot(root, defaultRoot)
+                ? `${root} (${translate('settings.downloadRootRules.defaultSuffix', {}, 'default')})`
+                : root;
             rootSelect.appendChild(option);
         });
         if (roots.includes(rule.root)) {

tests/frontend/managers/settingsManager.downloadRootRules.test.js

@@ -325,3 +325,107 @@ describe('SettingsManager download root rules', () => {
         }
     });
 });
+
+describe('SettingsManager download root rules default-root cue', () => {
+    beforeEach(() => {
+        document.body.innerHTML = '';
+        vi.clearAllMocks();
+        state.global.settings = {
+            download_root_rules: { loras: [], checkpoints: [], unet: [], embeddings: [] },
+        };
+    });
+
+    const defaultHintFor = (typeIndex) =>
+        document.querySelectorAll('.download-root-rule-group')[typeIndex]
+            .querySelector('.download-root-rule-default-hint');
+
+    it('renders a default hint under the group header when a default root is set', () => {
+        appendDownloadRootRulesUi();
+        state.global.settings.default_lora_root = '/models/loras-main';
+        const manager = createManager();
+
+        manager.renderDownloadRootRules();
+
+        expect(defaultHintFor(0).textContent)
+            .toBe('Default: /models/loras-main — unmatched downloads go here');
+    });
+
+    it('omits the default hint when the type has no roots or no default root', () => {
+        appendDownloadRootRulesUi();
+        state.global.settings.default_lora_root = '';
+        state.global.settings.default_embedding_root = '/models/embeddings';
+        const manager = createManager();
+
+        manager.renderDownloadRootRules();
+
+        // loras: default root is empty -> no hint
+        expect(defaultHintFor(0)).toBeNull();
+        // embeddings: no roots configured -> noRoots hint only, no default hint
+        expect(defaultHintFor(3)).toBeNull();
+    });
+
+    it('marks the default root option with a (default) suffix but keeps the plain value', () => {
+        appendDownloadRootRulesUi();
+        state.global.settings.default_lora_root = '/models/lora-archive';
+        state.global.settings.download_root_rules = {
+            loras: [{ match_type: 'base_model', match: ['Flux.1 D'], root: '/models/loras-main' }],
+            checkpoints: [],
+            unet: [],
+            embeddings: [],
+        };
+        const manager = createManager();
+
+        manager.renderDownloadRootRules();
+
+        const options = groupRows('loras')[0].querySelectorAll('select.download-root-rule-root option');
+        expect([...options].map((o) => o.value)).toEqual(['/models/loras-main', '/models/lora-archive']);
+        expect([...options].map((o) => o.textContent)).toEqual([
+            '/models/loras-main',
+            '/models/lora-archive (default)',
+        ]);
+    });
+
+    it('compares roots loosely: separators, trailing slashes and case are ignored', () => {
+        const manager = createManager();
+
+        expect(manager.isDownloadRootRuleDefaultRoot('C:\\Models\\Loras\\', 'c:/models/loras')).toBe(true);
+        expect(manager.isDownloadRootRuleDefaultRoot('/a/b/', '/a/b')).toBe(true);
+        expect(manager.isDownloadRootRuleDefaultRoot('/a/b', '/a/c')).toBe(false);
+        expect(manager.isDownloadRootRuleDefaultRoot('/a/b', '')).toBe(false);
+    });
+
+    it('does not render groups before the roots have been fetched', () => {
+        appendDownloadRootRulesUi();
+        const manager = createManager();
+        manager.downloadRootRuleRoots = null;
+
+        manager.renderDownloadRootRules();
+
+        expect(document.querySelectorAll('.download-root-rule-group')).toHaveLength(0);
+    });
+
+    it('changing a default root select re-renders the rules editor with the new default', async () => {
+        appendDownloadRootRulesUi();
+        document.body.insertAdjacentHTML(
+            'beforeend',
+            '<select id="defaultLoraRoot"><option value="/models/loras-main">a</option><option value="/models/lora-archive" selected>b</option></select>'
+        );
+        state.global.settings.default_lora_root = '/models/loras-main';
+        const manager = createManager();
+        manager.applyFrontendSettings = vi.fn();
+        // Mimic the real saveSetting, which writes the value into state.
+        manager.saveSetting = vi.fn().mockImplementation(async (key, value) => {
+            state.global.settings[key] = value;
+        });
+
+        manager.renderDownloadRootRules();
+        expect(defaultHintFor(0).textContent)
+            .toBe('Default: /models/loras-main — unmatched downloads go here');
+
+        await manager.saveSelectSetting('defaultLoraRoot', 'default_lora_root');
+
+        expect(manager.saveSetting).toHaveBeenCalledWith('default_lora_root', '/models/lora-archive');
+        expect(defaultHintFor(0).textContent)
+            .toBe('Default: /models/lora-archive — unmatched downloads go here');
+    });
+});