Add per-product AI extraction disable option

- Add ai_extraction_disabled column to products table
- Add toggle in Advanced Settings alongside AI verification disable
- Pass skipAiExtraction flag through scheduler to scraper
- Skip AI extraction fallback when flag is set for product

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/src/index.ts

@@ -178,6 +178,10 @@ async function runMigrations() {
         IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = 'products' AND column_name = 'ai_verification_disabled') THEN
           ALTER TABLE products ADD COLUMN ai_verification_disabled BOOLEAN DEFAULT false;
         END IF;
+        -- Per-product AI extraction disable flag
+        IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = 'products' AND column_name = 'ai_extraction_disabled') THEN
+          ALTER TABLE products ADD COLUMN ai_extraction_disabled BOOLEAN DEFAULT false;
+        END IF;
       END $$;
     `);
 

backend/src/models/index.ts

@@ -326,6 +326,7 @@ export interface Product {
   target_price: number | null;
   notify_back_in_stock: boolean;
   ai_verification_disabled: boolean;
+  ai_extraction_disabled: boolean;
   created_at: Date;
 }
 
@@ -490,6 +491,7 @@ export const productQueries = {
       target_price?: number | null;
       notify_back_in_stock?: boolean;
       ai_verification_disabled?: boolean;
+      ai_extraction_disabled?: boolean;
     }
   ): Promise<Product | null> => {
     const fields: string[] = [];
@@ -520,6 +522,10 @@ export const productQueries = {
       fields.push(`ai_verification_disabled = $${paramIndex++}`);
       values.push(updates.ai_verification_disabled);
     }
+    if (updates.ai_extraction_disabled !== undefined) {
+      fields.push(`ai_extraction_disabled = $${paramIndex++}`);
+      values.push(updates.ai_extraction_disabled);
+    }
 
     if (fields.length === 0) return null;
 
@@ -607,6 +613,14 @@ export const productQueries = {
     );
     return result.rows[0]?.ai_verification_disabled === true;
   },
+
+  isAiExtractionDisabled: async (id: number): Promise<boolean> => {
+    const result = await pool.query(
+      'SELECT ai_extraction_disabled FROM products WHERE id = $1',
+      [id]
+    );
+    return result.rows[0]?.ai_extraction_disabled === true;
+  },
 };
 
 // Price History types and queries

backend/src/routes/products.ts

@@ -219,7 +219,7 @@ router.put('/:id', async (req: AuthRequest, res: Response) => {
       return;
     }
 
-    const { name, refresh_interval, price_drop_threshold, target_price, notify_back_in_stock, ai_verification_disabled } = req.body;
+    const { name, refresh_interval, price_drop_threshold, target_price, notify_back_in_stock, ai_verification_disabled, ai_extraction_disabled } = req.body;
 
     const product = await productQueries.update(productId, userId, {
       name,
@@ -228,6 +228,7 @@ router.put('/:id', async (req: AuthRequest, res: Response) => {
       target_price,
       notify_back_in_stock,
       ai_verification_disabled,
+      ai_extraction_disabled,
     });
 
     if (!product) {

backend/src/services/scheduler.ts

@@ -32,7 +32,10 @@ async function checkPrices(): Promise<void> {
         // Check if AI verification is disabled for this product
         const skipAiVerification = await productQueries.isAiVerificationDisabled(product.id);
 
-        console.log(`[Scheduler] Product ${product.id} - preferredMethod: ${preferredMethod}, anchorPrice: ${anchorPrice}, skipAi: ${skipAiVerification}`);
+        // Check if AI extraction is disabled for this product
+        const skipAiExtraction = await productQueries.isAiExtractionDisabled(product.id);
+
+        console.log(`[Scheduler] Product ${product.id} - preferredMethod: ${preferredMethod}, anchorPrice: ${anchorPrice}, skipAiVerify: ${skipAiVerification}, skipAiExtract: ${skipAiExtraction}`);
 
         // Use voting scraper with preferred method and anchor price if available
         const scrapedData = await scrapeProductWithVoting(
@@ -40,7 +43,8 @@ async function checkPrices(): Promise<void> {
           product.user_id,
           preferredMethod as ExtractionMethod | undefined,
           anchorPrice || undefined,
-          skipAiVerification
+          skipAiVerification,
+          skipAiExtraction
         );
 
         console.log(`[Scheduler] Product ${product.id} - scraped price: ${scrapedData.price?.price}, candidates: ${scrapedData.priceCandidates.map(c => `${c.price}(${c.method})`).join(', ')}`);

backend/src/services/scraper.ts

@@ -1356,13 +1356,15 @@ export async function scrapeProduct(url: string, userId?: number): Promise<Scrap
  * @param anchorPrice - The price the user previously confirmed. Used to select the correct
  *                      variant on refresh when multiple prices are found.
  * @param skipAiVerification - If true, skip AI verification entirely for this product.
+ * @param skipAiExtraction - If true, skip AI extraction fallback for this product.
  */
 export async function scrapeProductWithVoting(
   url: string,
   userId?: number,
   preferredMethod?: ExtractionMethod,
   anchorPrice?: number,
-  skipAiVerification?: boolean
+  skipAiVerification?: boolean,
+  skipAiExtraction?: boolean
 ): Promise<ScrapedProductWithCandidates> {
   const result: ScrapedProductWithCandidates = {
     name: null,
@@ -1608,8 +1610,8 @@ export async function scrapeProductWithVoting(
         result.selectedMethod = bestCandidate.method;
       }
     } else {
-      // No candidates at all - try pure AI extraction
+      // No candidates at all - try pure AI extraction (unless disabled for this product)
-      if (userId && html) {
+      if (userId && html && !skipAiExtraction) {
         console.log(`[Voting] No candidates found, trying AI extraction...`);
         try {
           const { tryAIExtraction } = await import('./ai-extractor');

frontend/src/api/client.ts

@@ -66,6 +66,7 @@ export interface Product {
   target_price: number | null;
   notify_back_in_stock: boolean;
   ai_verification_disabled: boolean;
+  ai_extraction_disabled: boolean;
   created_at: string;
   current_price: number | null;
   currency: string | null;
@@ -133,6 +134,7 @@ export const productsApi = {
     target_price?: number | null;
     notify_back_in_stock?: boolean;
     ai_verification_disabled?: boolean;
+    ai_extraction_disabled?: boolean;
   }) => api.put<Product>(`/products/${id}`, data),
 
   delete: (id: number) => api.delete(`/products/${id}`),

frontend/src/pages/ProductDetail.tsx

@@ -31,6 +31,7 @@ export default function ProductDetail() {
   const [targetPrice, setTargetPrice] = useState<string>('');
   const [notifyBackInStock, setNotifyBackInStock] = useState(false);
   const [aiVerificationDisabled, setAiVerificationDisabled] = useState(false);
+  const [aiExtractionDisabled, setAiExtractionDisabled] = useState(false);
 
   const REFRESH_INTERVALS = [
     { value: 300, label: '5 minutes' },
@@ -64,6 +65,7 @@ export default function ProductDetail() {
       }
       setNotifyBackInStock(productRes.data.notify_back_in_stock || false);
       setAiVerificationDisabled(productRes.data.ai_verification_disabled || false);
+      setAiExtractionDisabled(productRes.data.ai_extraction_disabled || false);
     } catch {
       setError('Failed to load product details');
     } finally {
@@ -142,6 +144,7 @@ export default function ProductDetail() {
         target_price: target,
         notify_back_in_stock: notifyBackInStock,
         ai_verification_disabled: aiVerificationDisabled,
+        ai_extraction_disabled: aiExtractionDisabled,
       });
       setProduct({
         ...product,
@@ -149,6 +152,7 @@ export default function ProductDetail() {
         target_price: target,
         notify_back_in_stock: notifyBackInStock,
         ai_verification_disabled: aiVerificationDisabled,
+        ai_extraction_disabled: aiExtractionDisabled,
       });
       showToast('Notification settings saved');
     } catch {
@@ -854,6 +858,18 @@ export default function ProductDetail() {
         </p>
 
         <label className="advanced-checkbox-group">
+          <input
+            type="checkbox"
+            checked={aiExtractionDisabled}
+            onChange={(e) => setAiExtractionDisabled(e.target.checked)}
+          />
+          <div className="advanced-checkbox-label">
+            <span>Disable AI Extraction</span>
+            <span>Prevent AI from being used as a fallback when standard scraping fails to find a price. Useful if AI keeps extracting wrong prices.</span>
+          </div>
+        </label>
+
+        <label className="advanced-checkbox-group" style={{ marginTop: '0.75rem' }}>
           <input
             type="checkbox"
             checked={aiVerificationDisabled}