feat(recipes): add prompt-aware duplicate detection toggle

static/css/components/duplicates.css

@@ -486,6 +486,26 @@
     }
 }
 
+/* Empty-state hint in the duplicates view */
+.duplicates-empty-state {
+    padding: 48px 16px;
+    text-align: center;
+    opacity: 0.7;
+    font-size: 0.95em;
+    width: 100%;
+}
+
+/* Matching basis text in the duplicates banner */
+.duplicates-basis {
+    font-size: 0.85em;
+    opacity: 0.8;
+    padding: 3px 10px;
+    border-radius: var(--border-radius-xs);
+    background: oklch(var(--color-accent-l) var(--color-accent-c) var(--color-accent-h) / 0.12);
+    border: 1px solid oklch(var(--color-accent-l) var(--color-accent-c) var(--color-accent-h) / 0.25);
+    white-space: nowrap;
+}
+
 /* Help icon styling */
 .help-icon {
     color: var(--text-color);

static/js/components/DuplicatesManager.js

@@ -1,5 +1,6 @@
 // Duplicates Manager Component
 import { showToast } from '../utils/uiHelpers.js';
+import { translate } from '../utils/i18nHelpers.js';
 import { RecipeCard } from './RecipeCard.js';
 import { state, getCurrentPageState } from '../state/index.js';
 import { recreateVirtualScroll } from '../utils/infiniteScroll.js';
@@ -10,11 +11,87 @@ export class DuplicatesManager {
         this.duplicateGroups = [];
         this.inDuplicateMode = false;
         this.selectedForDeletion = new Set();
+        this._initPromptMatchToggle();
+        this._initHelpTooltip();
     }
-    
+
+    _getPromptMatchPreference() {
+        return localStorage.getItem('recipes_duplicates_include_prompt') === '1';
+    }
+
+    _setPromptMatchPreference(enabled) {
+        localStorage.setItem('recipes_duplicates_include_prompt', enabled ? '1' : '0');
+    }
+
+    updateBasisDisplay() {
+        const basisEl = document.getElementById('duplicatesBasis');
+        const helpTextEl = document.getElementById('duplicatesHelpText');
+        const checkbox = document.getElementById('promptMatchInput');
+        const includePrompt = this._getPromptMatchPreference();
+        if (checkbox) {
+            checkbox.checked = includePrompt;
+        }
+        if (basisEl) {
+            basisEl.textContent = translate(
+                includePrompt
+                    ? 'recipes.duplicates.basis.loraComboAndPrompt'
+                    : 'recipes.duplicates.basis.loraCombo'
+            );
+        }
+        if (helpTextEl) {
+            helpTextEl.textContent = translate(
+                includePrompt
+                    ? 'recipes.duplicates.basis.hintPromptIncluded'
+                    : 'recipes.duplicates.basis.hintLoraCombo'
+            );
+        }
+    }
+
+    _initPromptMatchToggle() {
+        const checkbox = document.getElementById('promptMatchInput');
+        if (!checkbox) return;
+        checkbox.addEventListener('change', async (e) => {
+            this._setPromptMatchPreference(e.target.checked);
+            this.updateBasisDisplay();
+            checkbox.disabled = true;
+            try {
+                await this.findDuplicates();
+            } finally {
+                checkbox.disabled = false;
+            }
+        });
+    }
+
+    _initHelpTooltip() {
+        const helpIcon = document.getElementById('duplicatesHelp');
+        const helpTooltip = document.getElementById('duplicatesHelpTooltip');
+        if (!helpIcon || !helpTooltip) return;
+
+        helpIcon.addEventListener('mouseenter', () => {
+            const bannerContent = helpIcon.closest('.banner-content');
+            if (!bannerContent) return;
+            const iconRect = helpIcon.getBoundingClientRect();
+            const bannerRect = bannerContent.getBoundingClientRect();
+            helpTooltip.style.display = 'block';
+            helpTooltip.style.top = `${iconRect.bottom - bannerRect.top + 10}px`;
+            helpTooltip.style.left = `${iconRect.left - bannerRect.left - 10}px`;
+            const tooltipRect = helpTooltip.getBoundingClientRect();
+            if (tooltipRect.right > window.innerWidth - 20) {
+                helpTooltip.style.left = `${bannerContent.offsetWidth - tooltipRect.width - 20}px`;
+            }
+        });
+        helpIcon.addEventListener('mouseleave', () => {
+            helpTooltip.style.display = 'none';
+        });
+    }
+
     async findDuplicates() {
         try {
-            const response = await fetch('/api/lm/recipes/find-duplicates');
+            const includePrompt = this._getPromptMatchPreference();
+            const endpoint = includePrompt
+                ? '/api/lm/recipes/find-duplicates?include_prompt=1'
+                : '/api/lm/recipes/find-duplicates';
+            const response = await fetch(endpoint);
             if (!response.ok) {
                 throw new Error('Failed to find duplicates');
             }
@@ -28,7 +105,14 @@ export class DuplicatesManager {
             
             if (this.duplicateGroups.length === 0) {
                 showToast('toast.duplicates.noDuplicatesFound', { type: 'recipes' }, 'info');
-                return false;
+                // Keep (or enter) the duplicates view when the user is tuning
+                // the matching basis, so the prompt-matching toggle stays
+                // reachable; otherwise just toast and stay on the library grid.
+                if (!this.inDuplicateMode && !includePrompt) {
+                    return false;
+                }
+                this.enterDuplicateMode();
+                return true;
             }
             
             this.enterDuplicateMode();
@@ -53,9 +137,14 @@ export class DuplicatesManager {
         const countSpan = document.getElementById('duplicatesCount');
         
         if (banner && countSpan) {
-            countSpan.textContent = `Found ${this.duplicateGroups.length} duplicate group${this.duplicateGroups.length !== 1 ? 's' : ''}`;
+            countSpan.textContent = this.duplicateGroups.length === 0
+                ? translate('recipes.duplicates.noGroups')
+                : translate('recipes.duplicates.found', { count: this.duplicateGroups.length });
             banner.style.display = 'block';
         }
+
+        // Restore the prompt-matching preference and show the matching basis
+        this.updateBasisDisplay();
         
         // Disable virtual scrolling if active
         if (state.virtualScroller) {
@@ -113,12 +202,23 @@ export class DuplicatesManager {
         
         // Clear existing content
         recipeGrid.innerHTML = '';
+
+        // Empty-state view: keep the banner (and the matching-basis toggle)
+        // reachable when no groups match the current basis
+        if (this.duplicateGroups.length === 0) {
+            const emptyState = document.createElement('div');
+            emptyState.className = 'duplicates-empty-state';
+            emptyState.textContent = translate('recipes.duplicates.noGroups');
+            recipeGrid.appendChild(emptyState);
+            return;
+        }
         
         // Render each duplicate group
         this.duplicateGroups.forEach((group, groupIndex) => {
+            const groupKey = group.key;
             const groupDiv = document.createElement('div');
             groupDiv.className = 'duplicate-group';
-            groupDiv.dataset.fingerprint = group.fingerprint;
+            groupDiv.dataset.groupKey = groupKey;
             
             // Create group header
             const header = document.createElement('div');
@@ -126,10 +226,10 @@ export class DuplicatesManager {
             header.innerHTML = `
                 <span>Duplicate Group #${groupIndex + 1} (${group.recipes.length} recipes)</span>
                 <span>
-                    <button class="btn-select-all" onclick="recipeManager.duplicatesManager.toggleSelectAllInGroup('${group.fingerprint}')">
+                    <button class="btn-select-all" onclick="recipeManager.duplicatesManager.toggleSelectAllInGroup('${groupKey}')">
                         Select All
                     </button>
-                    <button class="btn-select-latest" onclick="recipeManager.duplicatesManager.selectLatestInGroup('${group.fingerprint}')">
+                    <button class="btn-select-latest" onclick="recipeManager.duplicatesManager.selectLatestInGroup('${groupKey}')">
                         Keep Latest
                     </button>
                 </span>
@@ -182,7 +282,7 @@ export class DuplicatesManager {
                 checkbox.type = 'checkbox';
                 checkbox.className = 'selector-checkbox';
                 checkbox.dataset.recipeId = recipe.id;
-                checkbox.dataset.groupFingerprint = group.fingerprint;
+                checkbox.dataset.groupKey = groupKey;
                 
                 // Check if already selected
                 if (this.selectedForDeletion.has(recipe.id)) {
@@ -244,8 +344,8 @@ export class DuplicatesManager {
         }
     }
     
-    toggleSelectAllInGroup(fingerprint) {
-        const checkboxes = document.querySelectorAll(`.selector-checkbox[data-group-fingerprint="${fingerprint}"]`);
+    toggleSelectAllInGroup(groupKey) {
+        const checkboxes = document.querySelectorAll(`.selector-checkbox[data-group-key="${groupKey}"]`);
         const allSelected = Array.from(checkboxes).every(checkbox => checkbox.checked);
         
         // If all are selected, deselect all; otherwise select all
@@ -264,7 +364,7 @@ export class DuplicatesManager {
         });
         
         // Update the button text
-        const button = document.querySelector(`.duplicate-group[data-fingerprint="${fingerprint}"] .btn-select-all`);
+        const button = document.querySelector(`.duplicate-group[data-group-key="${groupKey}"] .btn-select-all`);
         if (button) {
             button.textContent = !allSelected ? "Deselect All" : "Select All";
         }
@@ -272,8 +372,8 @@ export class DuplicatesManager {
         this.updateSelectedCount();
     }
     
-    selectAllInGroup(fingerprint) {
-        const checkboxes = document.querySelectorAll(`.selector-checkbox[data-group-fingerprint="${fingerprint}"]`);
+    selectAllInGroup(groupKey) {
+        const checkboxes = document.querySelectorAll(`.selector-checkbox[data-group-key="${groupKey}"]`);
         checkboxes.forEach(checkbox => {
             checkbox.checked = true;
             this.selectedForDeletion.add(checkbox.dataset.recipeId);
@@ -281,7 +381,7 @@ export class DuplicatesManager {
         });
         
         // Update the button text
-        const button = document.querySelector(`.duplicate-group[data-fingerprint="${fingerprint}"] .btn-select-all`);
+        const button = document.querySelector(`.duplicate-group[data-group-key="${groupKey}"] .btn-select-all`);
         if (button) {
             button.textContent = "Deselect All";
         }
@@ -289,12 +389,12 @@ export class DuplicatesManager {
         this.updateSelectedCount();
     }
     
-    selectLatestInGroup(fingerprint) {
+    selectLatestInGroup(groupKey) {
         // Find all checkboxes in this group
-        const checkboxes = document.querySelectorAll(`.selector-checkbox[data-group-fingerprint="${fingerprint}"]`);
+        const checkboxes = document.querySelectorAll(`.selector-checkbox[data-group-key="${groupKey}"]`);
         
         // Get all the recipes in this group
-        const group = this.duplicateGroups.find(g => g.fingerprint === fingerprint);
+        const group = this.duplicateGroups.find(g => g.key === groupKey);
         if (!group) return;
         
         // Sort recipes by date (newest first)
@@ -328,7 +428,7 @@ export class DuplicatesManager {
     selectLatestDuplicates() {
         // For each duplicate group, select all but the latest recipe
         this.duplicateGroups.forEach(group => {
-            this.selectLatestInGroup(group.fingerprint);
+            this.selectLatestInGroup(group.key);
         });
     }