Merge branch 'recipes-calories'

recipes: nutrition calculator with BLS/USDA matching, manual overwrites, and skip

Dual-source nutrition system using BLS (German, primary) and USDA (English, fallback)
with ML embedding matching (multilingual-e5-small / all-MiniLM-L6-v2), hybrid
substring-first search, and position-aware scoring heuristics.

Includes per-recipe and global manual ingredient overwrites, ingredient skip/exclude,
referenced recipe nutrition (base refs + anchor tags), section-name dedup,
amino acid tracking, and reactive client-side calculator with NutritionSummary component.

recipes: overhaul nutrition editor UI and defer saves to form submission

- Nutrition mappings and global overwrites are now local-only until
  the recipe is saved, preventing premature DB writes on generate/edit
- Generate endpoint supports ?preview=true for non-persisting previews
- Show existing nutrition data immediately instead of requiring generate
- Replace raw checkboxes with Toggle component for global overwrites,
  initialized from existing NutritionOverwrite records
- Fix search dropdown readability (solid backgrounds, proper theming)
- Use fuzzy search (fzf-style) for manual nutrition ingredient lookup
- Swap ingredient display: German primary, English in brackets
- Allow editing g/u on manually mapped ingredients
- Make translation optional: separate save (FAB) and translate buttons
- "Vollständig neu übersetzen" now triggers actual full retranslation
- Show existing translation inline instead of behind a button
- Replace nord0 dark backgrounds with semantic theme variables

.gitignore

@@ -10,6 +10,8 @@ node_modules
 !.env.example
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
+# USDA bulk data downloads (regenerated by scripts/import-usda-nutrition.ts)
+data/usda/
 src-tauri/target/
 src-tauri/*.keystore
 # Android: ignore build output and caches, track source files

package.json

@@ -47,6 +47,7 @@
 	},
 	"dependencies": {
 		"@auth/sveltekit": "^1.11.1",
+		"@huggingface/transformers": "^4.0.0",
 		"@sveltejs/adapter-node": "^5.0.0",
 		"@tauri-apps/plugin-geolocation": "^2.3.2",
 		"chart.js": "^4.5.0",

scripts/embed-bls-db.ts

@@ -0,0 +1,61 @@
+/**
+ * Pre-compute sentence embeddings for BLS German food names.
+ * Uses multilingual-e5-small for good German language understanding.
+ *
+ * Run: pnpm exec vite-node scripts/embed-bls-db.ts
+ */
+import { pipeline } from '@huggingface/transformers';
+import { writeFileSync } from 'fs';
+import { resolve } from 'path';
+
+// Dynamic import of blsDb (generated file)
+const { BLS_DB } = await import('../src/lib/data/blsDb');
+
+const MODEL_NAME = 'Xenova/multilingual-e5-small';
+const OUTPUT_FILE = resolve('src/lib/data/blsEmbeddings.json');
+
+async function main() {
+  console.log(`Loading model ${MODEL_NAME}...`);
+  const embedder = await pipeline('feature-extraction', MODEL_NAME, {
+    dtype: 'q8',
+  });
+
+  console.log(`Embedding ${BLS_DB.length} BLS entries...`);
+
+  const entries: { blsCode: string; name: string; vector: number[] }[] = [];
+  const batchSize = 32;
+
+  for (let i = 0; i < BLS_DB.length; i += batchSize) {
+    const batch = BLS_DB.slice(i, i + batchSize);
+    // e5 models require "passage: " prefix for documents
+    const texts = batch.map(e => `passage: ${e.nameDe}`);
+
+    for (let j = 0; j < batch.length; j++) {
+      const result = await embedder(texts[j], { pooling: 'mean', normalize: true });
+      const vector = Array.from(result.data as Float32Array).map(v => Math.round(v * 10000) / 10000);
+
+      entries.push({
+        blsCode: batch[j].blsCode,
+        name: batch[j].nameDe,
+        vector,
+      });
+    }
+
+    if ((i + batchSize) % 500 < batchSize) {
+      console.log(`  ${Math.min(i + batchSize, BLS_DB.length)}/${BLS_DB.length}`);
+    }
+  }
+
+  const output = {
+    model: MODEL_NAME,
+    dimensions: entries[0]?.vector.length || 384,
+    count: entries.length,
+    entries,
+  };
+
+  const json = JSON.stringify(output);
+  writeFileSync(OUTPUT_FILE, json, 'utf-8');
+  console.log(`Written ${OUTPUT_FILE} (${(json.length / 1024 / 1024).toFixed(1)}MB, ${entries.length} entries)`);
+}
+
+main().catch(console.error);

scripts/embed-nutrition-db.ts

@@ -0,0 +1,60 @@
+/**
+ * Pre-computes sentence embeddings for all USDA nutrition DB entries using
+ * all-MiniLM-L6-v2 via @huggingface/transformers.
+ *
+ * Run with: pnpm exec vite-node scripts/embed-nutrition-db.ts
+ *
+ * Outputs: src/lib/data/nutritionEmbeddings.json
+ * Format: { entries: [{ fdcId, name, vector: number[384] }] }
+ */
+import { writeFileSync } from 'fs';
+import { resolve } from 'path';
+import { pipeline } from '@huggingface/transformers';
+import { NUTRITION_DB } from '../src/lib/data/nutritionDb';
+
+const OUTPUT_PATH = resolve('src/lib/data/nutritionEmbeddings.json');
+const MODEL_NAME = 'Xenova/all-MiniLM-L6-v2';
+const BATCH_SIZE = 64;
+
+async function main() {
+	console.log('=== Nutrition DB Embedding Generation ===\n');
+	console.log(`Entries to embed: ${NUTRITION_DB.length}`);
+	console.log(`Model: ${MODEL_NAME}`);
+	console.log(`Loading model (first run downloads ~23MB)...\n`);
+
+	const embedder = await pipeline('feature-extraction', MODEL_NAME, {
+		dtype: 'q8',
+	});
+
+	const entries: { fdcId: number; name: string; vector: number[] }[] = [];
+	const totalBatches = Math.ceil(NUTRITION_DB.length / BATCH_SIZE);
+
+	for (let i = 0; i < NUTRITION_DB.length; i += BATCH_SIZE) {
+		const batch = NUTRITION_DB.slice(i, i + BATCH_SIZE);
+		const batchNum = Math.floor(i / BATCH_SIZE) + 1;
+		process.stdout.write(`\r  Batch ${batchNum}/${totalBatches} (${i + batch.length}/${NUTRITION_DB.length})`);
+
+		// Embed all names in this batch
+		for (const item of batch) {
+			const result = await embedder(item.name, { pooling: 'mean', normalize: true });
+			// result.data is a Float32Array — truncate to 4 decimal places to save space
+			const vector = Array.from(result.data as Float32Array).map(v => Math.round(v * 10000) / 10000);
+			entries.push({ fdcId: item.fdcId, name: item.name, vector });
+		}
+	}
+
+	console.log('\n\nWriting embeddings...');
+
+	const output = { model: MODEL_NAME, dimensions: 384, count: entries.length, entries };
+	writeFileSync(OUTPUT_PATH, JSON.stringify(output), 'utf-8');
+
+	const fileSizeMB = (Buffer.byteLength(JSON.stringify(output)) / 1024 / 1024).toFixed(1);
+	console.log(`Written ${entries.length} embeddings to ${OUTPUT_PATH} (${fileSizeMB}MB)`);
+
+	await embedder.dispose();
+}
+
+main().catch(err => {
+	console.error('Embedding generation failed:', err);
+	process.exit(1);
+});

scripts/import-bls-nutrition.ts

@@ -0,0 +1,180 @@
+/**
+ * Import BLS 4.0 (Bundeslebensmittelschlüssel) nutrition data from CSV.
+ * Pre-convert the xlsx to CSV first (one-time):
+ *   node -e "const X=require('xlsx');const w=X.readFile('BLS_4_0_2025_DE/BLS_4_0_Daten_2025_DE.xlsx');
+ *   require('fs').writeFileSync('BLS_4_0_2025_DE/BLS_4_0_Daten_2025_DE.csv',X.utils.sheet_to_csv(w.Sheets[w.SheetNames[0]]))"
+ *
+ * Run: pnpm exec vite-node scripts/import-bls-nutrition.ts
+ */
+import { readFileSync, writeFileSync } from 'fs';
+import { resolve } from 'path';
+
+/** Parse CSV handling quoted fields with commas */
+function parseCSV(text: string): string[][] {
+  const rows: string[][] = [];
+  let i = 0;
+  while (i < text.length) {
+    const row: string[] = [];
+    while (i < text.length && text[i] !== '\n') {
+      if (text[i] === '"') {
+        i++; // skip opening quote
+        let field = '';
+        while (i < text.length) {
+          if (text[i] === '"') {
+            if (text[i + 1] === '"') { field += '"'; i += 2; }
+            else { i++; break; }
+          } else { field += text[i]; i++; }
+        }
+        row.push(field);
+        if (text[i] === ',') i++;
+      } else {
+        const next = text.indexOf(',', i);
+        const nl = text.indexOf('\n', i);
+        const end = (next === -1 || (nl !== -1 && nl < next)) ? (nl === -1 ? text.length : nl) : next;
+        row.push(text.substring(i, end));
+        i = end;
+        if (text[i] === ',') i++;
+      }
+    }
+    if (text[i] === '\n') i++;
+    if (row.length > 0) rows.push(row);
+  }
+  return rows;
+}
+
+const BLS_CSV = resolve('BLS_4_0_2025_DE/BLS_4_0_Daten_2025_DE.csv');
+const OUTPUT_FILE = resolve('src/lib/data/blsDb.ts');
+
+// BLS nutrient code → our per100g field name
+const NUTRIENT_MAP: Record<string, { field: string; divisor?: number }> = {
+  ENERCC: { field: 'calories' },
+  PROT625: { field: 'protein' },
+  FAT: { field: 'fat' },
+  FASAT: { field: 'saturatedFat' },
+  CHO: { field: 'carbs' },
+  FIBT: { field: 'fiber' },
+  SUGAR: { field: 'sugars' },
+  CA: { field: 'calcium' },
+  FE: { field: 'iron' },
+  MG: { field: 'magnesium' },
+  P: { field: 'phosphorus' },
+  K: { field: 'potassium' },
+  NA: { field: 'sodium' },
+  ZN: { field: 'zinc' },
+  VITA: { field: 'vitaminA' },
+  VITC: { field: 'vitaminC' },
+  VITD: { field: 'vitaminD' },
+  VITE: { field: 'vitaminE' },
+  VITK: { field: 'vitaminK' },
+  THIA: { field: 'thiamin' },
+  RIBF: { field: 'riboflavin' },
+  NIA: { field: 'niacin' },
+  VITB6: { field: 'vitaminB6', divisor: 1000 }, // BLS: µg → mg
+  VITB12: { field: 'vitaminB12' },
+  FOL: { field: 'folate' },
+  CHORL: { field: 'cholesterol' },
+  // Amino acids (all g/100g)
+  ILE: { field: 'isoleucine' },
+  LEU: { field: 'leucine' },
+  LYS: { field: 'lysine' },
+  MET: { field: 'methionine' },
+  PHE: { field: 'phenylalanine' },
+  THR: { field: 'threonine' },
+  TRP: { field: 'tryptophan' },
+  VAL: { field: 'valine' },
+  HIS: { field: 'histidine' },
+  ALA: { field: 'alanine' },
+  ARG: { field: 'arginine' },
+  ASP: { field: 'asparticAcid' },
+  CYSTE: { field: 'cysteine' },
+  GLU: { field: 'glutamicAcid' },
+  GLY: { field: 'glycine' },
+  PRO: { field: 'proline' },
+  SER: { field: 'serine' },
+  TYR: { field: 'tyrosine' },
+};
+
+// BLS code first letter → category (BLS 4.0 Hauptgruppen)
+const CATEGORY_MAP: Record<string, string> = {
+  A: 'Getränke', B: 'Getreideprodukte', C: 'Getreide', D: 'Backwaren',
+  E: 'Gemüse', F: 'Obst', G: 'Hülsenfrüchte',
+  H: 'Gewürze und Kräuter', J: 'Fette und Öle', K: 'Milch und Milchprodukte',
+  L: 'Eier', M: 'Fleisch', N: 'Wurstwaren', O: 'Wild', P: 'Geflügel',
+  Q: 'Fisch und Meeresfrüchte', R: 'Süßwaren', S: 'Zucker und Honig',
+  T: 'Gerichte und Rezepte', U: 'Pilze', V: 'Sonstiges', W: 'Algen',
+  X: 'Fleischersatz', Y: 'Supplemente',
+};
+
+async function main() {
+  console.log('Reading BLS CSV...');
+  const csvText = readFileSync(BLS_CSV, 'utf-8');
+  const rows: string[][] = parseCSV(csvText);
+
+  const headers = rows[0];
+  console.log(`Headers: ${headers.length} columns, ${rows.length - 1} data rows`);
+
+  // Build column index: BLS nutrient code → column index of the value column
+  const codeToCol = new Map<string, number>();
+  for (let c = 3; c < headers.length; c += 3) {
+    const code = headers[c]?.split(' ')[0];
+    if (code) codeToCol.set(code, c);
+  }
+
+  const entries: any[] = [];
+
+  for (let r = 1; r < rows.length; r++) {
+    const row = rows[r];
+    const blsCode = row[0]?.trim();
+    const nameDe = row[1]?.trim();
+    const nameEn = row[2]?.trim() || '';
+
+    if (!blsCode || !nameDe) continue;
+
+    const category = CATEGORY_MAP[blsCode[0]] || 'Sonstiges';
+    const per100g: Record<string, number> = {};
+
+    for (const [blsNutrientCode, mapping] of Object.entries(NUTRIENT_MAP)) {
+      const col = codeToCol.get(blsNutrientCode);
+      if (col === undefined) {
+        per100g[mapping.field] = 0;
+        continue;
+      }
+      let value = parseFloat(row[col] || '0');
+      if (isNaN(value)) value = 0;
+      if (mapping.divisor) value /= mapping.divisor;
+      per100g[mapping.field] = Math.round(value * 1000) / 1000;
+    }
+
+    entries.push({ blsCode, nameDe, nameEn, category, per100g });
+  }
+
+  console.log(`Parsed ${entries.length} BLS entries`);
+
+  // Sample entries
+  const sample = entries.slice(0, 3);
+  for (const e of sample) {
+    console.log(`  ${e.blsCode} | ${e.nameDe} | ${e.per100g.calories} kcal | protein ${e.per100g.protein}g`);
+  }
+
+  const output = `// Auto-generated from BLS 4.0 (Bundeslebensmittelschlüssel)
+// Generated: ${new Date().toISOString().split('T')[0]}
+// Do not edit manually — regenerate with: pnpm exec vite-node scripts/import-bls-nutrition.ts
+
+import type { NutritionPer100g } from '$types/types';
+
+export type BlsEntry = {
+  blsCode: string;
+  nameDe: string;
+  nameEn: string;
+  category: string;
+  per100g: NutritionPer100g;
+};
+
+export const BLS_DB: BlsEntry[] = ${JSON.stringify(entries, null, 0)};
+`;
+
+  writeFileSync(OUTPUT_FILE, output, 'utf-8');
+  console.log(`Written ${OUTPUT_FILE} (${(output.length / 1024 / 1024).toFixed(1)}MB, ${entries.length} entries)`);
+}
+
+main().catch(console.error);

scripts/import-usda-nutrition.ts

@@ -0,0 +1,371 @@
+/**
+ * Imports USDA FoodData Central data (SR Legacy + Foundation Foods) and generates
+ * a typed nutrition database for the recipe calorie calculator.
+ *
+ * Run with: pnpm exec vite-node scripts/import-usda-nutrition.ts
+ *
+ * Downloads bulk CSV data from USDA FDC, filters to relevant food categories,
+ * extracts macro/micronutrient data per 100g, and outputs src/lib/data/nutritionDb.ts
+ */
+import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'fs';
+import { resolve } from 'path';
+
+const DATA_DIR = resolve('data/usda');
+const OUTPUT_PATH = resolve('src/lib/data/nutritionDb.ts');
+
+// USDA FDC bulk download URLs
+const USDA_URLS = {
+	srLegacy: 'https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_sr_legacy_food_csv_2018-04.zip',
+	foundation: 'https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_foundation_food_csv_2024-10-31.zip',
+};
+
+// Nutrient IDs we care about
+const NUTRIENT_IDS: Record<number, string> = {
+	1008: 'calories',
+	1003: 'protein',
+	1004: 'fat',
+	1258: 'saturatedFat',
+	1005: 'carbs',
+	1079: 'fiber',
+	1063: 'sugars',
+	// Minerals
+	1087: 'calcium',
+	1089: 'iron',
+	1090: 'magnesium',
+	1091: 'phosphorus',
+	1092: 'potassium',
+	1093: 'sodium',
+	1095: 'zinc',
+	// Vitamins
+	1106: 'vitaminA',    // RAE (mcg)
+	1162: 'vitaminC',
+	1114: 'vitaminD',    // D2+D3 (mcg)
+	1109: 'vitaminE',
+	1185: 'vitaminK',
+	1165: 'thiamin',
+	1166: 'riboflavin',
+	1167: 'niacin',
+	1175: 'vitaminB6',
+	1178: 'vitaminB12',
+	1177: 'folate',
+	// Other
+	1253: 'cholesterol',
+	// Amino acids (g/100g)
+	1212: 'isoleucine',
+	1213: 'leucine',
+	1214: 'lysine',
+	1215: 'methionine',
+	1217: 'phenylalanine',
+	1211: 'threonine',
+	1210: 'tryptophan',
+	1219: 'valine',
+	1221: 'histidine',
+	1222: 'alanine',
+	1220: 'arginine',
+	1223: 'asparticAcid',
+	1216: 'cysteine',
+	1224: 'glutamicAcid',
+	1225: 'glycine',
+	1226: 'proline',
+	1227: 'serine',
+	1218: 'tyrosine',
+};
+
+// Food categories to include (SR Legacy food_category_id descriptions)
+const INCLUDED_CATEGORIES = new Set([
+	'Dairy and Egg Products',
+	'Spices and Herbs',
+	'Baby Foods',
+	'Fats and Oils',
+	'Poultry Products',
+	'Soups, Sauces, and Gravies',
+	'Sausages and Luncheon Meats',
+	'Breakfast Cereals',
+	'Fruits and Fruit Juices',
+	'Pork Products',
+	'Vegetables and Vegetable Products',
+	'Nut and Seed Products',
+	'Beef Products',
+	'Beverages',
+	'Finfish and Shellfish Products',
+	'Legumes and Legume Products',
+	'Lamb, Veal, and Game Products',
+	'Baked Products',
+	'Sweets',
+	'Cereal Grains and Pasta',
+	'Snacks',
+	'Restaurant Foods',
+]);
+
+type NutrientData = Record<string, number>;
+
+interface RawFood {
+	fdcId: number;
+	description: string;
+	categoryId: number;
+	category: string;
+}
+
+interface Portion {
+	description: string;
+	grams: number;
+}
+
+// Simple CSV line parser that handles quoted fields
+function parseCSVLine(line: string): string[] {
+	const fields: string[] = [];
+	let current = '';
+	let inQuotes = false;
+
+	for (let i = 0; i < line.length; i++) {
+		const ch = line[i];
+		if (ch === '"') {
+			if (inQuotes && i + 1 < line.length && line[i + 1] === '"') {
+				current += '"';
+				i++;
+			} else {
+				inQuotes = !inQuotes;
+			}
+		} else if (ch === ',' && !inQuotes) {
+			fields.push(current);
+			current = '';
+		} else {
+			current += ch;
+		}
+	}
+	fields.push(current);
+	return fields;
+}
+
+async function readCSV(filePath: string): Promise<Record<string, string>[]> {
+	if (!existsSync(filePath)) {
+		console.warn(`  File not found: ${filePath}`);
+		return [];
+	}
+
+	const content = readFileSync(filePath, 'utf-8');
+	const lines = content.split('\n').filter(l => l.trim());
+	if (lines.length === 0) return [];
+
+	const headers = parseCSVLine(lines[0]);
+	const rows: Record<string, string>[] = [];
+
+	for (let i = 1; i < lines.length; i++) {
+		const fields = parseCSVLine(lines[i]);
+		const row: Record<string, string> = {};
+		for (let j = 0; j < headers.length; j++) {
+			row[headers[j]] = fields[j] || '';
+		}
+		rows.push(row);
+	}
+
+	return rows;
+}
+
+async function downloadAndExtract(url: string, targetDir: string): Promise<void> {
+	const zipName = url.split('/').pop()!;
+	const zipPath = resolve(DATA_DIR, zipName);
+
+	if (existsSync(targetDir) && readFileSync(resolve(targetDir, '.done'), 'utf-8').trim() === 'ok') {
+		console.log(`  Already extracted: ${targetDir}`);
+		return;
+	}
+
+	mkdirSync(targetDir, { recursive: true });
+
+	if (!existsSync(zipPath)) {
+		console.log(`  Downloading ${zipName}...`);
+		const response = await fetch(url);
+		if (!response.ok) throw new Error(`Download failed: ${response.status} ${response.statusText}`);
+
+		const buffer = Buffer.from(await response.arrayBuffer());
+		writeFileSync(zipPath, buffer);
+		console.log(`  Downloaded ${(buffer.length / 1024 / 1024).toFixed(1)}MB`);
+	}
+
+	console.log(`  Extracting to ${targetDir}...`);
+	const { execSync } = await import('child_process');
+	execSync(`unzip -o -j "${zipPath}" -d "${targetDir}"`, { stdio: 'pipe' });
+	writeFileSync(resolve(targetDir, '.done'), 'ok');
+}
+
+async function importDataset(datasetDir: string, label: string) {
+	console.log(`\nProcessing ${label}...`);
+
+	// Read category mapping
+	const categoryRows = await readCSV(resolve(datasetDir, 'food_category.csv'));
+	const categoryMap = new Map<string, string>();
+	for (const row of categoryRows) {
+		categoryMap.set(row['id'], row['description']);
+	}
+
+	// Read foods
+	const foodRows = await readCSV(resolve(datasetDir, 'food.csv'));
+	const foods = new Map<number, RawFood>();
+
+	for (const row of foodRows) {
+		const catId = parseInt(row['food_category_id'] || '0');
+		const category = categoryMap.get(row['food_category_id']) || '';
+
+		if (!INCLUDED_CATEGORIES.has(category)) continue;
+
+		const fdcId = parseInt(row['fdc_id']);
+		foods.set(fdcId, {
+			fdcId,
+			description: row['description'],
+			categoryId: catId,
+			category,
+		});
+	}
+	console.log(`  Found ${foods.size} foods in included categories`);
+
+	// Read nutrients
+	const nutrientRows = await readCSV(resolve(datasetDir, 'food_nutrient.csv'));
+	const nutrients = new Map<number, NutrientData>();
+
+	for (const row of nutrientRows) {
+		const fdcId = parseInt(row['fdc_id']);
+		if (!foods.has(fdcId)) continue;
+
+		const nutrientId = parseInt(row['nutrient_id']);
+		const fieldName = NUTRIENT_IDS[nutrientId];
+		if (!fieldName) continue;
+
+		if (!nutrients.has(fdcId)) nutrients.set(fdcId, {});
+		const amount = parseFloat(row['amount'] || '0');
+		if (!isNaN(amount)) {
+			nutrients.get(fdcId)![fieldName] = amount;
+		}
+	}
+	console.log(`  Loaded nutrients for ${nutrients.size} foods`);
+
+	// Read portions
+	const portionRows = await readCSV(resolve(datasetDir, 'food_portion.csv'));
+	const portions = new Map<number, Portion[]>();
+
+	for (const row of portionRows) {
+		const fdcId = parseInt(row['fdc_id']);
+		if (!foods.has(fdcId)) continue;
+
+		const gramWeight = parseFloat(row['gram_weight'] || '0');
+		if (!gramWeight || isNaN(gramWeight)) continue;
+
+		// Build description from amount + modifier/description
+		const amount = parseFloat(row['amount'] || '1');
+		const modifier = row['modifier'] || row['portion_description'] || '';
+		const desc = modifier
+			? (amount !== 1 ? `${amount} ${modifier}` : modifier)
+			: `${amount} unit`;
+
+		if (!portions.has(fdcId)) portions.set(fdcId, []);
+		portions.get(fdcId)!.push({ description: desc, grams: Math.round(gramWeight * 100) / 100 });
+	}
+	console.log(`  Loaded portions for ${portions.size} foods`);
+
+	return { foods, nutrients, portions };
+}
+
+function buildNutrientRecord(data: NutrientData | undefined): Record<string, number> {
+	const allFields = Object.values(NUTRIENT_IDS);
+	const result: Record<string, number> = {};
+	for (const field of allFields) {
+		result[field] = Math.round((data?.[field] || 0) * 100) / 100;
+	}
+	return result;
+}
+
+async function main() {
+	console.log('=== USDA Nutrition Database Import ===\n');
+
+	mkdirSync(DATA_DIR, { recursive: true });
+
+	// Download and extract datasets
+	const srDir = resolve(DATA_DIR, 'sr_legacy');
+	const foundationDir = resolve(DATA_DIR, 'foundation');
+
+	await downloadAndExtract(USDA_URLS.srLegacy, srDir);
+	await downloadAndExtract(USDA_URLS.foundation, foundationDir);
+
+	// Import both datasets
+	const sr = await importDataset(srDir, 'SR Legacy');
+	const foundation = await importDataset(foundationDir, 'Foundation Foods');
+
+	// Merge: Foundation Foods takes priority (more detailed), SR Legacy fills gaps
+	const merged = new Map<string, {
+		fdcId: number;
+		name: string;
+		category: string;
+		per100g: Record<string, number>;
+		portions: Portion[];
+	}>();
+
+	// Add SR Legacy first
+	for (const [fdcId, food] of sr.foods) {
+		const nutrientData = buildNutrientRecord(sr.nutrients.get(fdcId));
+		// Skip entries with no nutrient data at all
+		if (!sr.nutrients.has(fdcId)) continue;
+
+		merged.set(food.description.toLowerCase(), {
+			fdcId,
+			name: food.description,
+			category: food.category,
+			per100g: nutrientData,
+			portions: sr.portions.get(fdcId) || [],
+		});
+	}
+
+	// Override with Foundation Foods where available
+	for (const [fdcId, food] of foundation.foods) {
+		const nutrientData = buildNutrientRecord(foundation.nutrients.get(fdcId));
+		if (!foundation.nutrients.has(fdcId)) continue;
+
+		merged.set(food.description.toLowerCase(), {
+			fdcId,
+			name: food.description,
+			category: food.category,
+			per100g: nutrientData,
+			portions: foundation.portions.get(fdcId) || [],
+		});
+	}
+
+	console.log(`\nMerged total: ${merged.size} unique foods`);
+
+	// Sort by name for stable output
+	const entries = [...merged.values()].sort((a, b) => a.name.localeCompare(b.name));
+
+	// Generate TypeScript output
+	const tsContent = `// Auto-generated from USDA FoodData Central (SR Legacy + Foundation Foods)
+// Generated: ${new Date().toISOString().split('T')[0]}
+// Do not edit manually — regenerate with: pnpm exec vite-node scripts/import-usda-nutrition.ts
+
+import type { NutritionPer100g } from '$types/types';
+
+export type NutritionEntry = {
+	fdcId: number;
+	name: string;
+	category: string;
+	per100g: NutritionPer100g;
+	portions: { description: string; grams: number }[];
+};
+
+export const NUTRITION_DB: NutritionEntry[] = ${JSON.stringify(entries, null, '\t')};
+`;
+
+	writeFileSync(OUTPUT_PATH, tsContent, 'utf-8');
+	console.log(`\nWritten ${entries.length} entries to ${OUTPUT_PATH}`);
+
+	// Print category breakdown
+	const categoryCounts = new Map<string, number>();
+	for (const entry of entries) {
+		categoryCounts.set(entry.category, (categoryCounts.get(entry.category) || 0) + 1);
+	}
+	console.log('\nCategory breakdown:');
+	for (const [cat, count] of [...categoryCounts.entries()].sort((a, b) => b[1] - a[1])) {
+		console.log(`  ${cat}: ${count}`);
+	}
+}
+
+main().catch(err => {
+	console.error('Import failed:', err);
+	process.exit(1);
+});

src/lib/components/Toggle.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	let { checked = $bindable(false), label = "", accentColor = "var(--color-primary)", href = undefined as string | undefined } = $props<{ checked?: boolean, label?: string, accentColor?: string, href?: string }>();
+	let { checked = $bindable(false), label = "", accentColor = "var(--color-primary)", href = undefined as string | undefined, onchange = undefined as (() => void) | undefined } = $props<{ checked?: boolean, label?: string, accentColor?: string, href?: string, onchange?: () => void }>();
 </script>
 
 <style>
@@ -96,7 +96,7 @@
 		</a>
 	{:else}
 		<label>
-			<input type="checkbox" bind:checked />
+			<input type="checkbox" bind:checked onchange={onchange} />
 			<span>{label}</span>
 		</label>
 	{/if}

src/lib/components/recipes/IngredientsPage.svelte

@@ -4,6 +4,7 @@ import { onNavigate } from "$app/navigation";
 import { browser } from '$app/environment';
 import { page } from '$app/stores';
 import HefeSwapper from './HefeSwapper.svelte';
+import NutritionSummary from './NutritionSummary.svelte';
 let { data } = $props();
 
 // Helper function to multiply numbers in ingredient amounts
@@ -365,6 +366,44 @@ function adjust_amount(string, multiplier){
 }
 
 
+// Collect section names for nutrition dedup (skip ingredients matching another section's name)
+const nutritionSectionNames = $derived.by(() => {
+	if (!data.ingredients) return new Set();
+	const names = new Set();
+	for (const section of data.ingredients) {
+		if (section.name) {
+			const stripped = section.name.replace(/<[^>]*>/g, '').toLowerCase().trim();
+			if (stripped) names.add(stripped);
+		}
+	}
+	return names;
+});
+
+// Build flat ingredient list with section/ingredient indices for nutrition calculator
+const nutritionFlatIngredients = $derived.by(() => {
+	if (!data.ingredients) return [];
+	/** @type {{ name: string; unit: string; amount: string; sectionIndex: number; ingredientIndex: number; sectionName: string }[]} */
+	const flat = [];
+	for (let si = 0; si < data.ingredients.length; si++) {
+		const section = data.ingredients[si];
+		if (section.type === 'reference') continue;
+		if (!section.list) continue;
+		const sectionName = (section.name || '').replace(/<[^>]*>/g, '').toLowerCase().trim();
+		for (let ii = 0; ii < section.list.length; ii++) {
+			const item = section.list[ii];
+			flat.push({
+				name: item.name,
+				unit: item.unit || '',
+				amount: item.amount || '',
+				sectionIndex: si,
+				ingredientIndex: ii,
+				sectionName,
+			});
+		}
+	}
+	return flat;
+});
+
 // No need for complex yeast toggle handling - everything is calculated server-side now
 </script>
 <style>
@@ -587,5 +626,15 @@ function adjust_amount(string, multiplier){
 </div>
 {/if}
 {/each}
+
+<NutritionSummary
+	flatIngredients={nutritionFlatIngredients}
+	nutritionMappings={data.nutritionMappings}
+	sectionNames={nutritionSectionNames}
+	referencedNutrition={data.referencedNutrition || []}
+	{multiplier}
+	portions={data.portions}
+	isEnglish={isEnglish}
+/>
 </div>
 {/if}

src/lib/components/recipes/NutritionSummary.svelte

@@ -0,0 +1,295 @@
+<script>
+	import { createNutritionCalculator } from '$lib/js/nutrition.svelte';
+
+	let { flatIngredients, nutritionMappings, sectionNames, referencedNutrition, multiplier, portions, isEnglish } = $props();
+
+	const nutrition = createNutritionCalculator(
+		() => flatIngredients,
+		() => nutritionMappings || [],
+		() => multiplier,
+		() => sectionNames || new Set(),
+		() => referencedNutrition || [],
+	);
+
+	let showDetails = $state(false);
+
+	const portionCount = $derived.by(() => {
+		if (!portions) return 0;
+		const match = portions.match(/^(\d+(?:[.,]\d+)?)/);
+		return match ? parseFloat(match[1].replace(',', '.')) : 0;
+	});
+
+	const adjustedPortionCount = $derived(portionCount > 0 ? portionCount * multiplier : 0);
+
+	// Divisor for per-portion values (1 if no portions → show total)
+	const div = $derived(adjustedPortionCount > 0 ? adjustedPortionCount : 1);
+
+	const perPortionCalories = $derived(adjustedPortionCount > 0 ? nutrition.totalMacros.calories / adjustedPortionCount : 0);
+
+	// Macro percentages by calories: protein=4kcal/g, fat=9kcal/g, carbs=4kcal/g
+	const macroPercent = $derived.by(() => {
+		const m = nutrition.totalMacros;
+		const proteinCal = m.protein * 4;
+		const fatCal = m.fat * 9;
+		const carbsCal = m.carbs * 4;
+		const total = proteinCal + fatCal + carbsCal;
+		if (total === 0) return { protein: 0, fat: 0, carbs: 0 };
+		return {
+			protein: Math.round(proteinCal / total * 100),
+			fat: Math.round(fatCal / total * 100),
+			carbs: 100 - Math.round(proteinCal / total * 100) - Math.round(fatCal / total * 100),
+		};
+	});
+
+	const labels = $derived({
+		title: isEnglish ? 'Nutrition' : 'Nährwerte',
+		perPortion: isEnglish ? 'per portion' : 'pro Portion',
+		protein: isEnglish ? 'Protein' : 'Eiweiß',
+		fat: isEnglish ? 'Fat' : 'Fett',
+		carbs: isEnglish ? 'Carbs' : 'Kohlenh.',
+		fiber: isEnglish ? 'Fiber' : 'Ballaststoffe',
+		sugars: isEnglish ? 'Sugars' : 'Zucker',
+		saturatedFat: isEnglish ? 'Sat. Fat' : 'Ges. Fett',
+		details: isEnglish ? 'Details' : 'Details',
+		vitamins: isEnglish ? 'Vitamins' : 'Vitamine',
+		minerals: isEnglish ? 'Minerals' : 'Mineralstoffe',
+		coverage: isEnglish ? 'coverage' : 'Abdeckung',
+		unmapped: isEnglish ? 'Not tracked' : 'Nicht erfasst',
+		aminoAcids: isEnglish ? 'Amino Acids' : 'Aminosäuren',
+	});
+
+	const hasAminoAcids = $derived.by(() => {
+		const aa = nutrition.totalAminoAcids;
+		return aa.leucine > 0 || aa.lysine > 0 || aa.isoleucine > 0;
+	});
+
+	/** @param {number} value */
+	function fmt(value) {
+		if (value >= 100) return Math.round(value).toString();
+		if (value >= 10) return value.toFixed(1);
+		return value.toFixed(1);
+	}
+
+	// SVG arc parameters — 300° arc with 60° gap at bottom
+	const RADIUS = 28;
+	const ARC_DEGREES = 300;
+	const ARC_LENGTH = (ARC_DEGREES / 360) * 2 * Math.PI * RADIUS;
+	// Arc starts at the left side: rotate so the gap is centered at the bottom
+	// 0° in SVG circle = 3 o'clock. We want the arc to start at ~210° (7 o'clock)
+	// and end at ~150° (5 o'clock), leaving a 60° gap at bottom center.
+	const ARC_ROTATE = 120; // rotate the starting point: -90 (top) + 210 offset → start at left
+
+	/** @param {number} percent */
+	function strokeOffset(percent) {
+		return ARC_LENGTH - (percent / 100) * ARC_LENGTH;
+	}
+</script>
+
+<style>
+	.nutrition-summary {
+		margin-top: 1.5rem;
+	}
+	.portion-cal {
+		text-align: center;
+		font-size: 0.9rem;
+		color: var(--color-text-secondary, #666);
+		margin: 0.25rem 0;
+	}
+
+	.macro-rings {
+		display: flex;
+		justify-content: space-around;
+		margin: 0.5rem 0;
+	}
+	.macro-ring {
+		display: flex;
+		flex-direction: column;
+		align-items: center;
+		gap: 0.25rem;
+		flex: 1;
+	}
+	.ring-bg {
+		fill: none;
+		stroke: var(--color-border, #e5e5e5);
+		stroke-width: 5;
+		stroke-linecap: round;
+	}
+	.ring-fill {
+		fill: none;
+		stroke-width: 5;
+		stroke-linecap: round;
+		transition: stroke-dashoffset 0.4s ease;
+	}
+	.ring-text {
+		font-size: 14px;
+		font-weight: 700;
+		fill: currentColor;
+		text-anchor: middle;
+		dominant-baseline: central;
+	}
+	.ring-protein { stroke: var(--nord14, #a3be8c); }
+	.ring-fat { stroke: var(--nord12, #d08770); }
+	.ring-carbs { stroke: var(--nord9, #81a1c1); }
+
+	.macro-label {
+		font-size: 0.85rem;
+		font-weight: 600;
+		text-align: center;
+	}
+
+	.details-toggle-row {
+		text-align: center;
+		margin-top: 0.5rem;
+	}
+	.details-toggle {
+		font-size: 0.85rem;
+		cursor: pointer;
+		color: var(--color-primary);
+		background: none;
+		border: none;
+		padding: 0;
+		text-decoration: underline;
+		text-decoration-style: dotted;
+	}
+
+	.details-grid {
+		display: grid;
+		grid-template-columns: 1fr 1fr;
+		gap: 0.75rem 1.5rem;
+		margin-top: 0.75rem;
+		font-size: 0.85rem;
+	}
+	.detail-section h4 {
+		margin: 0 0 0.35rem;
+		font-size: 0.9rem;
+		color: var(--color-text-secondary);
+	}
+	.detail-row {
+		display: flex;
+		justify-content: space-between;
+		padding: 0.15rem 0;
+		border-bottom: 1px solid var(--color-border, #e5e5e5);
+	}
+	.detail-row:last-child {
+		border-bottom: none;
+	}
+
+	.coverage-warning {
+		margin-top: 0.5rem;
+		font-size: 0.8rem;
+		color: var(--nord13, #ebcb8b);
+	}
+
+	@media (max-width: 500px) {
+		.details-grid {
+			grid-template-columns: 1fr;
+		}
+	}
+</style>
+
+{#if nutritionMappings && nutritionMappings.length > 0}
+<div class="nutrition-summary">
+	<div class="macro-rings">
+		{#each [
+			{ pct: macroPercent.protein, label: labels.protein, cls: 'ring-protein' },
+			{ pct: macroPercent.fat, label: labels.fat, cls: 'ring-fat' },
+			{ pct: macroPercent.carbs, label: labels.carbs, cls: 'ring-carbs' },
+		] as macro}
+			<div class="macro-ring">
+				<svg width="90" height="90" viewBox="0 0 70 70">
+					<circle
+						class="ring-bg"
+						cx="35" cy="35" r={RADIUS}
+						stroke-dasharray="{ARC_LENGTH} {2 * Math.PI * RADIUS}"
+						transform="rotate({ARC_ROTATE} 35 35)"
+					/>
+					<circle
+						class="ring-fill {macro.cls}"
+						cx="35" cy="35" r={RADIUS}
+						stroke-dasharray="{ARC_LENGTH} {2 * Math.PI * RADIUS}"
+						stroke-dashoffset={strokeOffset(macro.pct)}
+						transform="rotate({ARC_ROTATE} 35 35)"
+					/>
+					<text class="ring-text" x="35" y="35">{macro.pct}%</text>
+				</svg>
+				<span class="macro-label">{macro.label}</span>
+			</div>
+		{/each}
+	</div>
+
+	{#if adjustedPortionCount > 0}
+		<p class="portion-cal">{fmt(perPortionCalories)} kcal {labels.perPortion}</p>
+	{/if}
+
+	{#if showDetails}
+		<div class="details-grid">
+			<div class="detail-section">
+				<h4>{labels.title} {adjustedPortionCount > 0 ? `(${labels.perPortion})` : ''}</h4>
+				<div class="detail-row"><span>{labels.protein}</span><span>{fmt(nutrition.totalMacros.protein / div)}g</span></div>
+				<div class="detail-row"><span>{labels.fat}</span><span>{fmt(nutrition.totalMacros.fat / div)}g</span></div>
+				<div class="detail-row"><span>&nbsp;&nbsp;{labels.saturatedFat}</span><span>{fmt(nutrition.totalMacros.saturatedFat / div)}g</span></div>
+				<div class="detail-row"><span>{labels.carbs}</span><span>{fmt(nutrition.totalMacros.carbs / div)}g</span></div>
+				<div class="detail-row"><span>&nbsp;&nbsp;{labels.sugars}</span><span>{fmt(nutrition.totalMacros.sugars / div)}g</span></div>
+				<div class="detail-row"><span>{labels.fiber}</span><span>{fmt(nutrition.totalMacros.fiber / div)}g</span></div>
+			</div>
+			<div class="detail-section">
+				<h4>{labels.vitamins}</h4>
+				<div class="detail-row"><span>Vitamin A</span><span>{fmt(nutrition.totalMicros.vitaminA / div)} mcg</span></div>
+				<div class="detail-row"><span>Vitamin C</span><span>{fmt(nutrition.totalMicros.vitaminC / div)} mg</span></div>
+				<div class="detail-row"><span>Vitamin D</span><span>{fmt(nutrition.totalMicros.vitaminD / div)} mcg</span></div>
+				<div class="detail-row"><span>Vitamin E</span><span>{fmt(nutrition.totalMicros.vitaminE / div)} mg</span></div>
+				<div class="detail-row"><span>Vitamin K</span><span>{fmt(nutrition.totalMicros.vitaminK / div)} mcg</span></div>
+				<div class="detail-row"><span>Vitamin B12</span><span>{fmt(nutrition.totalMicros.vitaminB12 / div)} mcg</span></div>
+				<div class="detail-row"><span>Folate</span><span>{fmt(nutrition.totalMicros.folate / div)} mcg</span></div>
+			</div>
+			<div class="detail-section">
+				<h4>{labels.minerals}</h4>
+				<div class="detail-row"><span>Calcium</span><span>{fmt(nutrition.totalMicros.calcium / div)} mg</span></div>
+				<div class="detail-row"><span>{isEnglish ? 'Iron' : 'Eisen'}</span><span>{fmt(nutrition.totalMicros.iron / div)} mg</span></div>
+				<div class="detail-row"><span>Magnesium</span><span>{fmt(nutrition.totalMicros.magnesium / div)} mg</span></div>
+				<div class="detail-row"><span>Potassium</span><span>{fmt(nutrition.totalMicros.potassium / div)} mg</span></div>
+				<div class="detail-row"><span>Sodium</span><span>{fmt(nutrition.totalMicros.sodium / div)} mg</span></div>
+				<div class="detail-row"><span>{isEnglish ? 'Zinc' : 'Zink'}</span><span>{fmt(nutrition.totalMicros.zinc / div)} mg</span></div>
+			</div>
+			{#if hasAminoAcids}
+			<div class="detail-section">
+				<h4>{labels.aminoAcids}</h4>
+				<div class="detail-row"><span>{isEnglish ? 'Leucine' : 'Leucin'}</span><span>{fmt(nutrition.totalAminoAcids.leucine / div)} g</span></div>
+				<div class="detail-row"><span>{isEnglish ? 'Isoleucine' : 'Isoleucin'}</span><span>{fmt(nutrition.totalAminoAcids.isoleucine / div)} g</span></div>
+				<div class="detail-row"><span>Valin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.valine / div)} g</span></div>
+				<div class="detail-row"><span>Lysin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.lysine / div)} g</span></div>
+				<div class="detail-row"><span>Methionin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.methionine / div)} g</span></div>
+				<div class="detail-row"><span>Phenylalanin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.phenylalanine / div)} g</span></div>
+				<div class="detail-row"><span>Threonin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.threonine / div)} g</span></div>
+				<div class="detail-row"><span>Tryptophan</span><span>{fmt(nutrition.totalAminoAcids.tryptophan / div)} g</span></div>
+				<div class="detail-row"><span>Histidin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.histidine / div)} g</span></div>
+				<div class="detail-row"><span>Arginin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.arginine / div)} g</span></div>
+				<div class="detail-row"><span>Alanin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.alanine / div)} g</span></div>
+				<div class="detail-row"><span>{isEnglish ? 'Aspartic Acid' : 'Asparaginsäure'}</span><span>{fmt(nutrition.totalAminoAcids.asparticAcid / div)} g</span></div>
+				<div class="detail-row"><span>{isEnglish ? 'Cysteine' : 'Cystein'}</span><span>{fmt(nutrition.totalAminoAcids.cysteine / div)} g</span></div>
+				<div class="detail-row"><span>{isEnglish ? 'Glutamic Acid' : 'Glutaminsäure'}</span><span>{fmt(nutrition.totalAminoAcids.glutamicAcid / div)} g</span></div>
+				<div class="detail-row"><span>Glycin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.glycine / div)} g</span></div>
+				<div class="detail-row"><span>Prolin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.proline / div)} g</span></div>
+				<div class="detail-row"><span>Serin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.serine / div)} g</span></div>
+				<div class="detail-row"><span>Tyrosin{isEnglish ? 'e' : ''}</span><span>{fmt(nutrition.totalAminoAcids.tyrosine / div)} g</span></div>
+			</div>
+			{/if}
+		</div>
+	{/if}
+
+	{#if nutrition.coverage < 1}
+		<div class="coverage-warning">
+			{Math.round(nutrition.coverage * 100)}% {labels.coverage}
+			{#if nutrition.unmapped.length > 0}
+				— {labels.unmapped}: {nutrition.unmapped.join(', ')}
+			{/if}
+		</div>
+	{/if}
+
+	<div class="details-toggle-row">
+		<button class="details-toggle" onclick={() => showDetails = !showDetails}>
+			{showDetails ? '−' : '+'} {labels.details}
+		</button>
+	</div>
+</div>
+{/if}

src/lib/components/recipes/TranslationApproval.svelte

@@ -14,7 +14,6 @@
 		onapproved?: (event: CustomEvent) => void;
 		onskipped?: () => void;
 		oncancelled?: () => void;
-		onforceFullRetranslation?: () => void;
 	}
 
 	let {
@@ -26,7 +25,6 @@
 		onapproved,
 		onskipped,
 		oncancelled,
-		onforceFullRetranslation
 	}: Props = $props();
 
 	type TranslationState = 'idle' | 'translating' | 'preview' | 'approved' | 'error';
@@ -204,7 +202,7 @@
 	});
 
 	// Handle auto-translate button click
-	async function handleAutoTranslate() {
+	async function handleAutoTranslate(fullRetranslation = false) {
 		translationState = 'translating';
 		errorMessage = '';
 		validationErrors = [];
@@ -217,7 +215,7 @@
 				},
 				body: JSON.stringify({
 					recipe: germanData,
-					fields: isEditMode && changedFields.length > 0 ? changedFields : undefined,
+					fields: isEditMode && !fullRetranslation && changedFields.length > 0 ? changedFields : undefined,
 					oldRecipe: oldRecipeData, // For granular item-level change detection
 					existingTranslation: englishData, // To merge with unchanged items
 				}),
@@ -358,11 +356,6 @@
 		oncancelled?.();
 	}
 
-	// Handle force full retranslation
-	function handleForceFullRetranslation() {
-		onforceFullRetranslation?.();
-	}
-
 	// Get status badge color
 	function getStatusColor(status: string): string {
 		switch (status) {
@@ -921,10 +914,10 @@ button:disabled {
 				<button class="btn-danger" onclick={handleCancel}>
 					Cancel
 				</button>
-				<button class="btn-secondary" onclick={handleForceFullRetranslation}>
+				<button class="btn-secondary" onclick={() => handleAutoTranslate(true)}>
 					Vollständig neu übersetzen
 				</button>
-				<button class="btn-secondary" onclick={handleAutoTranslate}>
+				<button class="btn-secondary" onclick={() => handleAutoTranslate()}>
 					Re-translate
 				</button>
 				<button class="btn-primary" onclick={handleApprove}>

src/lib/data/defaultAmounts.ts

@@ -0,0 +1,93 @@
+/**
+ * Default amounts for ingredients listed without an explicit amount in a recipe.
+ * E.g., just "salt" with no quantity defaults to 1 pinch.
+ *
+ * Resolution order:
+ * 1. Exact match on normalized ingredient name
+ * 2. Category-based fallback (keyed by USDA food category prefix with '_')
+ * 3. Mark as unmapped
+ */
+
+export type DefaultAmount = { amount: number; unit: string };
+
+/** Exact-match defaults for common ingredients listed without amounts */
+export const DEFAULT_AMOUNTS: Record<string, DefaultAmount> = {
+	// Salt & pepper
+	'salt': { amount: 1, unit: 'pinch' },
+	'pepper': { amount: 1, unit: 'pinch' },
+	'black pepper': { amount: 1, unit: 'pinch' },
+	'white pepper': { amount: 1, unit: 'pinch' },
+	'sea salt': { amount: 1, unit: 'pinch' },
+
+	// Common spices
+	'cinnamon': { amount: 0.5, unit: 'tsp' },
+	'nutmeg': { amount: 0.25, unit: 'tsp' },
+	'paprika': { amount: 0.5, unit: 'tsp' },
+	'cumin': { amount: 0.5, unit: 'tsp' },
+	'turmeric': { amount: 0.25, unit: 'tsp' },
+	'chili flakes': { amount: 0.25, unit: 'tsp' },
+	'cayenne pepper': { amount: 0.25, unit: 'tsp' },
+	'garlic powder': { amount: 0.5, unit: 'tsp' },
+	'onion powder': { amount: 0.5, unit: 'tsp' },
+	'oregano': { amount: 0.5, unit: 'tsp' },
+	'thyme': { amount: 0.5, unit: 'tsp' },
+	'rosemary': { amount: 0.5, unit: 'tsp' },
+
+	// Fresh herbs
+	'parsley': { amount: 1, unit: 'tbsp' },
+	'basil': { amount: 1, unit: 'tbsp' },
+	'cilantro': { amount: 1, unit: 'tbsp' },
+	'coriander': { amount: 1, unit: 'tbsp' },
+	'dill': { amount: 1, unit: 'tbsp' },
+	'chives': { amount: 1, unit: 'tbsp' },
+	'mint': { amount: 1, unit: 'tbsp' },
+
+	// Oils/fats (when listed for greasing)
+	'oil': { amount: 1, unit: 'tbsp' },
+	'olive oil': { amount: 1, unit: 'tbsp' },
+	'vegetable oil': { amount: 1, unit: 'tbsp' },
+	'butter': { amount: 1, unit: 'tbsp' },
+
+	// Liquids
+	'water': { amount: 0, unit: 'ml' }, // excluded from calorie calc
+	'vanilla extract': { amount: 1, unit: 'tsp' },
+	'lemon juice': { amount: 1, unit: 'tbsp' },
+	'vinegar': { amount: 1, unit: 'tbsp' },
+	'soy sauce': { amount: 1, unit: 'tbsp' },
+};
+
+/** Category-based fallbacks when no exact match is found.
+ *  Keyed with '_' prefix to distinguish from ingredient names. */
+export const CATEGORY_FALLBACKS: Record<string, DefaultAmount> = {
+	'_Spices and Herbs': { amount: 0.5, unit: 'tsp' },
+	'_Fats and Oils': { amount: 1, unit: 'tbsp' },
+	'_Beverages': { amount: 100, unit: 'ml' },
+};
+
+/**
+ * Resolve a default amount for an ingredient that has no amount specified.
+ * Returns the default amount and unit, or null if no default is available.
+ */
+export function resolveDefaultAmount(
+	normalizedName: string,
+	usdaCategory?: string
+): DefaultAmount | null {
+	// Exact match
+	if (DEFAULT_AMOUNTS[normalizedName]) {
+		return DEFAULT_AMOUNTS[normalizedName];
+	}
+
+	// Partial match: check if any key is contained in the name or vice versa
+	for (const [key, value] of Object.entries(DEFAULT_AMOUNTS)) {
+		if (normalizedName.includes(key) || key.includes(normalizedName)) {
+			return value;
+		}
+	}
+
+	// Category fallback
+	if (usdaCategory && CATEGORY_FALLBACKS[`_${usdaCategory}`]) {
+		return CATEGORY_FALLBACKS[`_${usdaCategory}`];
+	}
+
+	return null;
+}

src/lib/data/ingredientAliases.ts

@@ -0,0 +1,247 @@
+/**
+ * Fast-path alias table mapping normalized English ingredient names to USDA nutrition DB names.
+ * Checked before the embedding-based matching to avoid unnecessary ML inference for common ingredients.
+ *
+ * Keys: normalized lowercase ingredient names (stripped of modifiers)
+ * Values: exact USDA FDC name as it appears in nutritionDb.ts
+ *
+ * Expand this table over time — run scripts/generate-ingredient-aliases.ts to suggest new entries.
+ */
+
+export const INGREDIENT_ALIASES: Record<string, string> = {
+	// Dairy & Eggs
+	'egg': 'Egg, whole, raw, fresh',
+	'eggs': 'Egg, whole, raw, fresh',
+	'egg yolk': 'Egg, yolk, raw, fresh',
+	'egg yolks': 'Egg, yolk, raw, fresh',
+	'egg white': 'Egg, white, raw, fresh',
+	'egg whites': 'Egg, white, raw, fresh',
+	'butter': 'Butter, salted',
+	'unsalted butter': 'Butter, without salt',
+	'milk': 'Milk, whole, 3.25% milkfat, with added vitamin D',
+	'whole milk': 'Milk, whole, 3.25% milkfat, with added vitamin D',
+	'cream': 'Cream, fluid, heavy whipping',
+	'heavy cream': 'Cream, fluid, heavy whipping',
+	'whipping cream': 'Cream, fluid, heavy whipping',
+	'sour cream': 'Cream, sour, cultured',
+	'cream cheese': 'Cheese, cream',
+	'parmesan': 'Cheese, parmesan, hard',
+	'mozzarella': 'Cheese, mozzarella, whole milk',
+	'cheddar': 'Cheese, cheddar',
+	'yogurt': 'Yogurt, plain, whole milk',
+	'greek yogurt': 'Yogurt, Greek, plain, whole milk',
+
+	// Fats & Oils
+	'olive oil': 'Oil, olive, salad or cooking',
+	'vegetable oil': 'Oil, canola',
+	'canola oil': 'Oil, canola',
+	'neutral oil': 'Oil, peanut, salad or cooking',
+	'peanut oil': 'Oil, peanut, salad or cooking',
+	'sunflower oil': 'Oil, sunflower, linoleic, (approx. 65%)',
+	'coconut oil': 'Oil, coconut',
+	'sesame oil': 'Oil, sesame, salad or cooking',
+	'lard': 'Lard',
+	'margarine': 'Margarine, regular, 80% fat, composite, stick, with salt',
+
+	// Flours & Grains
+	'flour': 'Wheat flour, white, all-purpose, enriched, bleached',
+	'all purpose flour': 'Wheat flour, white, all-purpose, enriched, bleached',
+	'all-purpose flour': 'Wheat flour, white, all-purpose, enriched, bleached',
+	'bread flour': 'Wheat flour, white, bread, enriched',
+	'whole wheat flour': 'Flour, whole wheat, unenriched',
+	'rye flour': 'Rye flour, dark',
+	'cornstarch': 'Cornstarch',
+	'corn starch': 'Cornstarch',
+	'rice': 'Rice, white, long-grain, regular, raw, enriched',
+	'white rice': 'Rice, white, long-grain, regular, raw, enriched',
+	'brown rice': 'Rice, brown, long-grain, raw (Includes foods for USDA\'s Food Distribution Program)',
+	'pasta': 'Pasta, dry, enriched',
+	'spaghetti': 'Pasta, dry, enriched',
+	'noodles': 'Noodles, egg, dry, enriched',
+	'oats': 'Oats (Includes foods for USDA\'s Food Distribution Program)',
+	'rolled oats': 'Oats (Includes foods for USDA\'s Food Distribution Program)',
+	'breadcrumbs': 'Bread, crumbs, dry, grated, plain',
+
+	// Sugars & Sweeteners
+	'sugar': 'Sugars, granulated',
+	'white sugar': 'Sugars, granulated',
+	'granulated sugar': 'Sugars, granulated',
+	'brown sugar': 'Sugars, brown',
+	'powdered sugar': 'Sugars, powdered',
+	'icing sugar': 'Sugars, powdered',
+	'honey': 'Honey',
+	'maple syrup': 'Syrups, maple',
+	'molasses': 'Molasses',
+	'vanilla sugar': 'Sugars, granulated', // approximate
+
+	// Leavening
+	'baking powder': 'Leavening agents, baking powder, double-acting, sodium aluminum sulfate',
+	'baking soda': 'Leavening agents, baking soda',
+	'bicarbonate of soda': 'Leavening agents, baking soda',
+	'yeast': 'Leavening agents, yeast, baker\'s, active dry',
+	'dry yeast': 'Leavening agents, yeast, baker\'s, active dry',
+	'fresh yeast': 'Leavening agents, yeast, baker\'s, compressed',
+
+	// Vegetables
+	'onion': 'Onions, raw',
+	'onions': 'Onions, raw',
+	'garlic': 'Garlic, raw',
+	'potato': 'Potatoes, flesh and skin, raw',
+	'potatoes': 'Potatoes, flesh and skin, raw',
+	'carrot': 'Carrots, raw',
+	'carrots': 'Carrots, raw',
+	'tomato': 'Tomatoes, red, ripe, raw, year round average',
+	'tomatoes': 'Tomatoes, red, ripe, raw, year round average',
+	'bell pepper': 'Peppers, sweet, red, raw',
+	'red bell pepper': 'Peppers, sweet, red, raw',
+	'green bell pepper': 'Peppers, sweet, green, raw',
+	'celery': 'Celery, cooked, boiled, drained, without salt',
+	'spinach': 'Spinach, raw',
+	'broccoli': 'Broccoli, raw',
+	'cauliflower': 'Cauliflower, raw',
+	'zucchini': 'Squash, summer, zucchini, includes skin, raw',
+	'courgette': 'Squash, summer, zucchini, includes skin, raw',
+	'cucumber': 'Cucumber, with peel, raw',
+	'lettuce': 'Lettuce, green leaf, raw',
+	'cabbage': 'Cabbage, common (danish, domestic, and pointed types), freshly harvest, raw',
+	'mushrooms': 'Mushrooms, white, raw',
+	'mushroom': 'Mushrooms, white, raw',
+	'leek': 'Leeks, (bulb and lower leaf-portion), raw',
+	'leeks': 'Leeks, (bulb and lower leaf-portion), raw',
+	'peas': 'Peas, green, raw',
+	'corn': 'Corn, sweet, yellow, raw',
+	'sweet corn': 'Corn, sweet, yellow, raw',
+	'eggplant': 'Eggplant, raw',
+	'aubergine': 'Eggplant, raw',
+	'pumpkin': 'Pumpkin, raw',
+	'sweet potato': 'Sweet potato, raw, unprepared (Includes foods for USDA\'s Food Distribution Program)',
+	'ginger': 'Ginger root, raw',
+	'shallot': 'Shallots, raw',
+	'shallots': 'Shallots, raw',
+
+	// Fruits
+	'lemon': 'Lemons, raw, without peel',
+	'lemon juice': 'Lemon juice, raw',
+	'lemon zest': 'Lemon peel, raw',
+	'lime': 'Limes, raw',
+	'lime juice': 'Lime juice, raw',
+	'orange': 'Oranges, raw, navels',
+	'orange juice': 'Orange juice, raw (Includes foods for USDA\'s Food Distribution Program)',
+	'apple': 'Apples, raw, with skin (Includes foods for USDA\'s Food Distribution Program)',
+	'banana': 'Bananas, raw',
+	'berries': 'Blueberries, raw',
+	'blueberries': 'Blueberries, raw',
+	'strawberries': 'Strawberries, raw',
+	'raspberries': 'Raspberries, raw',
+	'raisins': 'Raisins, dark, seedless (Includes foods for USDA\'s Food Distribution Program)',
+	'dried cranberries': 'Cranberries, dried, sweetened (Includes foods for USDA\'s Food Distribution Program)',
+
+	// Nuts & Seeds
+	'almonds': 'Nuts, almonds',
+	'walnuts': 'Nuts, walnuts, english',
+	'hazelnuts': 'Nuts, hazelnuts or filberts',
+	'peanuts': 'Peanuts, all types, raw',
+	'pine nuts': 'Nuts, pine nuts, dried',
+	'cashews': 'Nuts, cashew nuts, raw',
+	'pecans': 'Nuts, pecans',
+	'sesame seeds': 'Seeds, sesame seeds, whole, dried',
+	'sunflower seeds': 'Seeds, sunflower seed kernels, dried',
+	'flaxseed': 'Seeds, flaxseed',
+	'pumpkin seeds': 'Seeds, pumpkin and squash seed kernels, dried',
+	'poppy seeds': 'Seeds, sesame seeds, whole, dried', // approximate
+	'almond flour': 'Nuts, almonds, blanched',
+	'ground almonds': 'Nuts, almonds, blanched',
+	'coconut flakes': 'Nuts, coconut meat, dried (desiccated), sweetened, shredded',
+	'desiccated coconut': 'Nuts, coconut meat, dried (desiccated), sweetened, shredded',
+	'peanut butter': 'Peanut butter, smooth style, with salt',
+
+	// Meats
+	'chicken breast': 'Chicken, broiler or fryers, breast, skinless, boneless, meat only, raw',
+	'chicken thigh': 'Chicken, broilers or fryers, dark meat, thigh, meat only, raw',
+	'ground beef': 'Beef, grass-fed, ground, raw',
+	'minced meat': 'Beef, grass-fed, ground, raw',
+	'bacon': 'Pork, cured, bacon, unprepared',
+	'ham': 'Ham, sliced, regular (approximately 11% fat)',
+	'sausage': 'Sausage, pork, chorizo, link or ground, raw',
+
+	// Seafood
+	'salmon': 'Fish, salmon, Atlantic, wild, raw',
+	'tuna': 'Fish, tuna, light, canned in water, drained solids',
+	'shrimp': 'Crustaceans, shrimp, raw',
+	'prawns': 'Crustaceans, shrimp, raw',
+	'cod': 'Fish, cod, Atlantic, raw',
+
+	// Legumes
+	'chickpeas': 'Chickpeas (garbanzo beans, bengal gram), mature seeds, raw',
+	'lentils': 'Lentils, raw',
+	'black beans': 'Beans, black, mature seeds, raw',
+	'kidney beans': 'Beans, kidney, red, mature seeds, raw',
+	'white beans': 'Beans, white, mature seeds, raw',
+	'canned chickpeas': 'Chickpeas (garbanzo beans, bengal gram), mature seeds, canned, drained solids',
+	'canned beans': 'Beans, kidney, red, mature seeds, canned, drained solids',
+	'tofu': 'Tofu, raw, firm, prepared with calcium sulfate',
+
+	// Condiments & Sauces
+	'soy sauce': 'Soy sauce made from soy (tamari)',
+	'vinegar': 'Vinegar, distilled',
+	'apple cider vinegar': 'Vinegar, cider',
+	'balsamic vinegar': 'Vinegar, balsamic',
+	'mustard': 'Mustard, prepared, yellow',
+	'ketchup': 'Catsup',
+	'tomato paste': 'Tomato products, canned, paste, without salt added (Includes foods for USDA\'s Food Distribution Program)',
+	'tomato sauce': 'Tomato products, canned, sauce',
+	'canned tomatoes': 'Tomatoes, red, ripe, canned, packed in tomato juice',
+	'worcestershire sauce': 'Sauce, worcestershire',
+	'hot sauce': 'Sauce, hot chile, sriracha',
+	'mayonnaise': 'Salad dressing, mayonnaise, regular',
+
+	// Chocolate & Baking
+	'chocolate': 'Chocolate, dark, 70-85% cacao solids',
+	'dark chocolate': 'Chocolate, dark, 70-85% cacao solids',
+	'cocoa powder': 'Cocoa, dry powder, unsweetened',
+	'cocoa': 'Cocoa, dry powder, unsweetened',
+	'chocolate chips': 'Chocolate, dark, 60-69% cacao solids',
+	'vanilla extract': 'Vanilla extract',
+	'vanilla': 'Vanilla extract',
+	'gelatin': 'Gelatin desserts, dry mix',
+
+	// Beverages
+	'coffee': 'Beverages, coffee, brewed, prepared with tap water',
+	'tea': 'Beverages, tea, black, brewed, prepared with tap water',
+	'wine': 'Alcoholic beverage, wine, table, red',
+	'red wine': 'Alcoholic beverage, wine, table, red',
+	'white wine': 'Alcoholic beverage, wine, table, white',
+	'beer': 'Alcoholic beverage, beer, regular, all',
+	'coconut milk': 'Nuts, coconut milk, raw (liquid expressed from grated meat and water)',
+
+	// Misc
+	'salt': 'Salt, table',
+	'pepper': 'Spices, pepper, black',
+	'black pepper': 'Spices, pepper, black',
+	'cinnamon': 'Spices, cinnamon, ground',
+	'paprika': 'Spices, paprika',
+	'cumin': 'Spices, cumin seed',
+	'nutmeg': 'Spices, nutmeg, ground',
+	'chili powder': 'Spices, chili powder',
+	'oregano': 'Spices, oregano, dried',
+	'thyme': 'Spices, thyme, dried',
+	'rosemary': 'Spices, rosemary, dried',
+	'bay leaf': 'Spices, bay leaf',
+	'turmeric': 'Spices, turmeric, ground',
+	'basil': 'Spices, basil, dried',
+	'parsley': 'Spices, parsley, dried',
+	'dill': 'Spices, dill weed, dried',
+	'mint': 'Spearmint, fresh',
+	'cloves': 'Spices, cloves, ground',
+	'cardamom': 'Spices, cardamom',
+	'ginger powder': 'Spices, ginger, ground',
+	'curry powder': 'Spices, curry powder',
+};
+
+/**
+ * Look up a normalized ingredient name in the alias table.
+ * Returns the USDA name if found, null otherwise.
+ */
+export function lookupAlias(normalizedName: string): string | null {
+	return INGREDIENT_ALIASES[normalizedName] || null;
+}

src/lib/data/unitConversions.ts

@@ -0,0 +1,177 @@
+/**
+ * Unit canonicalization and gram conversion tables for recipe nutrition calculation.
+ *
+ * German and English recipe units are mapped to canonical keys.
+ * Ingredient-specific conversions (e.g., 1 tbsp butter = 14.2g) are resolved
+ * via USDA portion data at matching time — this file only handles unit normalization
+ * and ingredient-independent conversions.
+ */
+
+/** Maps various unit strings (German + English) to a canonical unit key */
+export const UNIT_CANONICAL: Record<string, string> = {
+	// German → canonical
+	'EL': 'tbsp',
+	'el': 'tbsp',
+	'Esslöffel': 'tbsp',
+	'TL': 'tsp',
+	'tl': 'tsp',
+	'Teelöffel': 'tsp',
+	'Prise': 'pinch',
+	'Prisen': 'pinch',
+	'Msp': 'pinch',
+	'Msp.': 'pinch',
+	'Messerspitze': 'pinch',
+	'Bund': 'bunch',
+	'Stück': 'piece',
+	'Stk': 'piece',
+	'Stk.': 'piece',
+	'Scheibe': 'slice',
+	'Scheiben': 'slice',
+	'Zehe': 'clove',
+	'Zehen': 'clove',
+	'Blatt': 'leaf',
+	'Blätter': 'leaf',
+	'Zweig': 'sprig',
+	'Zweige': 'sprig',
+	'Dose': 'can',
+	'Dosen': 'can',
+	'Becher': 'cup',
+	'Tasse': 'cup',
+	'Tassen': 'cup',
+	'Packung': 'package',
+	'Pkg': 'package',
+	'Pkg.': 'package',
+	'Würfel': 'cube',
+
+	// English → canonical (passthrough + normalization)
+	'tbsp': 'tbsp',
+	'Tbsp': 'tbsp',
+	'tablespoon': 'tbsp',
+	'tablespoons': 'tbsp',
+	'tsp': 'tsp',
+	'Tsp': 'tsp',
+	'teaspoon': 'tsp',
+	'teaspoons': 'tsp',
+	'cup': 'cup',
+	'cups': 'cup',
+	'pinch': 'pinch',
+	'piece': 'piece',
+	'pieces': 'piece',
+	'slice': 'slice',
+	'slices': 'slice',
+	'clove': 'clove',
+	'cloves': 'clove',
+	'sprig': 'sprig',
+	'sprigs': 'sprig',
+	'bunch': 'bunch',
+	'leaf': 'leaf',
+	'leaves': 'leaf',
+	'can': 'can',
+	'package': 'package',
+	'cube': 'cube',
+
+	// Weight/volume units (already canonical, but normalize variants)
+	'g': 'g',
+	'gr': 'g',
+	'gram': 'g',
+	'grams': 'g',
+	'Gramm': 'g',
+	'kg': 'kg',
+	'kilogram': 'kg',
+	'ml': 'ml',
+	'mL': 'ml',
+	'milliliter': 'ml',
+	'Milliliter': 'ml',
+	'l': 'l',
+	'L': 'l',
+	'liter': 'l',
+	'Liter': 'l',
+	'oz': 'oz',
+	'ounce': 'oz',
+	'ounces': 'oz',
+	'lb': 'lb',
+	'lbs': 'lb',
+	'pound': 'lb',
+	'pounds': 'lb',
+};
+
+/** Direct gram conversions for weight/volume units (ingredient-independent) */
+export const UNIT_TO_GRAMS: Record<string, number> = {
+	'g': 1,
+	'kg': 1000,
+	'oz': 28.3495,
+	'lb': 453.592,
+	// Volume units use water density (1 ml = 1g) as base;
+	// adjusted by ingredient-specific density when available
+	'ml': 1,
+	'l': 1000,
+};
+
+/**
+ * Fallback gram estimates for common measurement units when no USDA portion data is available.
+ * These are rough averages across common ingredients.
+ */
+export const UNIT_GRAM_FALLBACKS: Record<string, number> = {
+	'tbsp': 15,     // ~15ml, varies by ingredient density
+	'tsp': 5,       // ~5ml
+	'cup': 240,     // US cup = ~240ml
+	'pinch': 0.3,
+	'slice': 30,
+	'clove': 3,     // garlic clove
+	'sprig': 2,
+	'bunch': 30,
+	'leaf': 0.5,
+	'cube': 25,     // bouillon cube
+	'can': 400,     // standard can
+	'package': 200,
+};
+
+/** Canonicalize a unit string. Returns the canonical key, or the original lowercased string if unknown. */
+export function canonicalizeUnit(unit: string): string {
+	const trimmed = unit.trim();
+	return UNIT_CANONICAL[trimmed] || UNIT_CANONICAL[trimmed.toLowerCase()] || trimmed.toLowerCase();
+}
+
+/**
+ * Get the gram weight for a given canonical unit, using USDA portion data when available.
+ * Falls back to standard conversions and then generic estimates.
+ */
+export function resolveGramsPerUnit(
+	canonicalUnit: string,
+	usdaPortions: { description: string; grams: number }[],
+	density?: number
+): { grams: number; source: 'direct' | 'density' | 'usda_portion' | 'estimate' | 'none' } {
+	// Direct weight conversion
+	if (canonicalUnit in UNIT_TO_GRAMS) {
+		const baseGrams = UNIT_TO_GRAMS[canonicalUnit];
+		// Apply density for volume units
+		if ((canonicalUnit === 'ml' || canonicalUnit === 'l') && density) {
+			return { grams: baseGrams * density, source: 'density' };
+		}
+		return { grams: baseGrams, source: 'direct' };
+	}
+
+	// Try to match against USDA portions
+	if (usdaPortions.length > 0) {
+		const unitLower = canonicalUnit.toLowerCase();
+		for (const portion of usdaPortions) {
+			const descLower = portion.description.toLowerCase();
+			// Match "1 tbsp", "tbsp", "tablespoon", etc.
+			if (descLower.includes(unitLower) ||
+				(unitLower === 'tbsp' && descLower.includes('tablespoon')) ||
+				(unitLower === 'tsp' && descLower.includes('teaspoon')) ||
+				(unitLower === 'cup' && descLower.includes('cup')) ||
+				(unitLower === 'piece' && (descLower.includes('unit') || descLower.includes('medium') || descLower.includes('whole'))) ||
+				(unitLower === 'slice' && descLower.includes('slice'))) {
+				return { grams: portion.grams, source: 'usda_portion' };
+			}
+		}
+	}
+
+	// Fallback estimates
+	if (canonicalUnit in UNIT_GRAM_FALLBACKS) {
+		return { grams: UNIT_GRAM_FALLBACKS[canonicalUnit], source: 'estimate' };
+	}
+
+	return { grams: 0, source: 'none' };
+}

src/lib/js/nutrition.svelte.ts

@@ -0,0 +1,302 @@
+/**
+ * Reactive nutrition calculator factory for recipe calorie/macro display.
+ * Uses Svelte 5 runes ($state/$derived) with the factory pattern.
+ *
+ * Import without .ts extension: import { createNutritionCalculator } from '$lib/js/nutrition.svelte'
+ *
+ * NOTE: Does NOT import the full NUTRITION_DB — all per100g data comes pre-resolved
+ * in the NutritionMapping objects from the API to keep client bundle small.
+ */
+import type { NutritionMapping } from '$types/types';
+
+export type MacroTotals = {
+	calories: number;
+	protein: number;
+	fat: number;
+	saturatedFat: number;
+	carbs: number;
+	fiber: number;
+	sugars: number;
+};
+
+export type MicroTotals = {
+	calcium: number;
+	iron: number;
+	magnesium: number;
+	phosphorus: number;
+	potassium: number;
+	sodium: number;
+	zinc: number;
+	vitaminA: number;
+	vitaminC: number;
+	vitaminD: number;
+	vitaminE: number;
+	vitaminK: number;
+	thiamin: number;
+	riboflavin: number;
+	niacin: number;
+	vitaminB6: number;
+	vitaminB12: number;
+	folate: number;
+	cholesterol: number;
+};
+
+export type AminoAcidTotals = {
+	isoleucine: number;
+	leucine: number;
+	lysine: number;
+	methionine: number;
+	phenylalanine: number;
+	threonine: number;
+	tryptophan: number;
+	valine: number;
+	histidine: number;
+	alanine: number;
+	arginine: number;
+	asparticAcid: number;
+	cysteine: number;
+	glutamicAcid: number;
+	glycine: number;
+	proline: number;
+	serine: number;
+	tyrosine: number;
+};
+
+const AMINO_ACID_KEYS: (keyof AminoAcidTotals)[] = [
+	'isoleucine', 'leucine', 'lysine', 'methionine', 'phenylalanine',
+	'threonine', 'tryptophan', 'valine', 'histidine', 'alanine',
+	'arginine', 'asparticAcid', 'cysteine', 'glutamicAcid', 'glycine',
+	'proline', 'serine', 'tyrosine',
+];
+
+export type IngredientNutrition = {
+	name: string;
+	calories: number;
+	mapped: boolean;
+};
+
+/** Parse a recipe amount string to a number */
+function parseAmount(amount: string): number {
+	if (!amount?.trim()) return 0;
+	let s = amount.trim();
+
+	const rangeMatch = s.match(/^(\d+(?:[.,]\d+)?)\s*[-–]\s*(\d+(?:[.,]\d+)?)$/);
+	if (rangeMatch) {
+		return (parseFloat(rangeMatch[1].replace(',', '.')) + parseFloat(rangeMatch[2].replace(',', '.'))) / 2;
+	}
+
+	s = s.replace(',', '.');
+
+	const fractionMatch = s.match(/^(\d+)\s*\/\s*(\d+)$/);
+	if (fractionMatch) return parseInt(fractionMatch[1]) / parseInt(fractionMatch[2]);
+
+	const mixedMatch = s.match(/^(\d+)\s+(\d+)\s*\/\s*(\d+)$/);
+	if (mixedMatch) return parseInt(mixedMatch[1]) + parseInt(mixedMatch[2]) / parseInt(mixedMatch[3]);
+
+	const parsed = parseFloat(s);
+	return isNaN(parsed) ? 0 : parsed;
+}
+
+/** Calculate grams for a single ingredient */
+function calculateGrams(
+	amount: string,
+	mapping: NutritionMapping,
+	multiplier: number
+): number {
+	if (mapping.excluded || !mapping.gramsPerUnit) return 0;
+	const parsedAmount = parseAmount(amount) || (mapping.defaultAmountUsed ? 1 : 0);
+	return parsedAmount * multiplier * mapping.gramsPerUnit;
+}
+
+export type ReferencedNutrition = {
+	shortName: string;
+	name: string;
+	nutrition: Record<string, number>;
+	baseMultiplier: number;
+};
+
+/** Strip HTML tags from a string */
+function stripHtml(html: string): string {
+	return html.replace(/<[^>]*>/g, '');
+}
+
+/**
+ * Create a reactive nutrition calculator.
+ *
+ * @param getFlatIngredients - getter for flattened ingredient list
+ * @param getMappings - getter for nutrition mappings (with per100g resolved by the API)
+ * @param getMultiplier - getter for the current recipe multiplier
+ * @param getSectionNames - getter for section names (for dedup)
+ * @param getReferencedNutrition - getter for pre-computed nutrition from referenced recipes
+ */
+export function createNutritionCalculator(
+	getFlatIngredients: () => { name: string; unit: string; amount: string; sectionIndex: number; ingredientIndex: number; sectionName?: string }[],
+	getMappings: () => NutritionMapping[],
+	getMultiplier: () => number,
+	getSectionNames?: () => Set<string>,
+	getReferencedNutrition?: () => ReferencedNutrition[],
+) {
+	const mappingIndex = $derived(
+		new Map(getMappings().map(m => [`${m.sectionIndex}-${m.ingredientIndex}`, m]))
+	);
+
+	/** Check if ingredient should be skipped (name matches a different section's name) */
+	function isSkippedDuplicate(ing: { name: string; sectionName?: string }): boolean {
+		if (!getSectionNames) return false;
+		const names = getSectionNames();
+		const stripped = stripHtml(ing.name).toLowerCase().trim();
+		const ownSection = (ing.sectionName || '').toLowerCase().trim();
+		return stripped !== '' && names.has(stripped) && stripped !== ownSection;
+	}
+
+	/** Check if ingredient is an anchor-tag reference to another recipe */
+	function isAnchorRef(ing: { name: string }): boolean {
+		return /<a\s/i.test(ing.name);
+	}
+
+	/** Check if ingredient should be excluded from direct nutrition calculation */
+	function shouldSkip(ing: { name: string; sectionName?: string }): boolean {
+		return isSkippedDuplicate(ing) || isAnchorRef(ing);
+	}
+
+	const perIngredient = $derived(
+		getFlatIngredients().map(ing => {
+			if (shouldSkip(ing)) return { name: ing.name, calories: 0, mapped: true };
+			const mapping = mappingIndex.get(`${ing.sectionIndex}-${ing.ingredientIndex}`);
+			if (!mapping || mapping.matchMethod === 'none' || mapping.excluded || !mapping.per100g) {
+				return { name: ing.name, calories: 0, mapped: false };
+			}
+
+			const grams = calculateGrams(ing.amount, mapping, getMultiplier());
+			const calories = (grams / 100) * mapping.per100g.calories;
+
+			return { name: ing.name, calories, mapped: true };
+		})
+	);
+
+	/** Add referenced recipe nutrition totals, scaled by multiplier and baseMultiplier */
+	function addReferencedNutrition(result: Record<string, number>, mult: number) {
+		if (!getReferencedNutrition) return;
+		for (const ref of getReferencedNutrition()) {
+			const scale = mult * ref.baseMultiplier;
+			for (const [key, value] of Object.entries(ref.nutrition)) {
+				if (key in result && typeof value === 'number') {
+					result[key] += value * scale;
+				}
+			}
+		}
+	}
+
+	const totalMacros = $derived.by(() => {
+		const result: MacroTotals = { calories: 0, protein: 0, fat: 0, saturatedFat: 0, carbs: 0, fiber: 0, sugars: 0 };
+		const ingredients = getFlatIngredients();
+		const mult = getMultiplier();
+
+		for (const ing of ingredients) {
+			if (shouldSkip(ing)) continue;
+			const mapping = mappingIndex.get(`${ing.sectionIndex}-${ing.ingredientIndex}`);
+			if (!mapping || mapping.matchMethod === 'none' || mapping.excluded || !mapping.per100g) continue;
+
+			const factor = calculateGrams(ing.amount, mapping, mult) / 100;
+
+			result.calories += factor * mapping.per100g.calories;
+			result.protein += factor * mapping.per100g.protein;
+			result.fat += factor * mapping.per100g.fat;
+			result.saturatedFat += factor * mapping.per100g.saturatedFat;
+			result.carbs += factor * mapping.per100g.carbs;
+			result.fiber += factor * mapping.per100g.fiber;
+			result.sugars += factor * mapping.per100g.sugars;
+		}
+
+		addReferencedNutrition(result, mult);
+		return result;
+	});
+
+	const totalMicros = $derived.by(() => {
+		const result: MicroTotals = {
+			calcium: 0, iron: 0, magnesium: 0, phosphorus: 0,
+			potassium: 0, sodium: 0, zinc: 0,
+			vitaminA: 0, vitaminC: 0, vitaminD: 0, vitaminE: 0,
+			vitaminK: 0, thiamin: 0, riboflavin: 0, niacin: 0,
+			vitaminB6: 0, vitaminB12: 0, folate: 0, cholesterol: 0,
+		};
+		const ingredients = getFlatIngredients();
+		const mult = getMultiplier();
+
+		for (const ing of ingredients) {
+			if (shouldSkip(ing)) continue;
+			const mapping = mappingIndex.get(`${ing.sectionIndex}-${ing.ingredientIndex}`);
+			if (!mapping || mapping.matchMethod === 'none' || mapping.excluded || !mapping.per100g) continue;
+
+			const factor = calculateGrams(ing.amount, mapping, mult) / 100;
+			for (const key of Object.keys(result) as (keyof MicroTotals)[]) {
+				result[key] += factor * ((mapping.per100g as any)[key] || 0);
+			}
+		}
+
+		addReferencedNutrition(result as Record<string, number>, mult);
+		return result;
+	});
+
+	const totalAminoAcids = $derived.by(() => {
+		const result: AminoAcidTotals = {
+			isoleucine: 0, leucine: 0, lysine: 0, methionine: 0, phenylalanine: 0,
+			threonine: 0, tryptophan: 0, valine: 0, histidine: 0, alanine: 0,
+			arginine: 0, asparticAcid: 0, cysteine: 0, glutamicAcid: 0, glycine: 0,
+			proline: 0, serine: 0, tyrosine: 0,
+		};
+		const ingredients = getFlatIngredients();
+		const mult = getMultiplier();
+
+		for (const ing of ingredients) {
+			if (shouldSkip(ing)) continue;
+			const mapping = mappingIndex.get(`${ing.sectionIndex}-${ing.ingredientIndex}`);
+			if (!mapping || mapping.matchMethod === 'none' || mapping.excluded || !mapping.per100g) continue;
+
+			const factor = calculateGrams(ing.amount, mapping, mult) / 100;
+			for (const key of AMINO_ACID_KEYS) {
+				result[key] += factor * ((mapping.per100g as any)[key] || 0);
+			}
+		}
+
+		addReferencedNutrition(result as Record<string, number>, mult);
+		return result;
+	});
+
+	const coverage = $derived.by(() => {
+		const ingredients = getFlatIngredients();
+		if (ingredients.length === 0) return 1;
+		let total = 0;
+		let mapped = 0;
+		for (const ing of ingredients) {
+			// Skipped duplicates and anchor-tag refs count as covered
+			if (shouldSkip(ing)) { total++; mapped++; continue; }
+			total++;
+			const m = mappingIndex.get(`${ing.sectionIndex}-${ing.ingredientIndex}`);
+			// Manually excluded ingredients count as covered
+			if (m?.excluded) { total++; mapped++; continue; }
+			if (m && m.matchMethod !== 'none') mapped++;
+		}
+		return total > 0 ? mapped / total : 1;
+	});
+
+	const unmapped = $derived(
+		getFlatIngredients()
+			.filter(ing => {
+				if (shouldSkip(ing)) return false;
+				const m = mappingIndex.get(`${ing.sectionIndex}-${ing.ingredientIndex}`);
+				if (m?.excluded) return false;
+				return !m || m.matchMethod === 'none';
+			})
+			.map(ing => stripHtml(ing.name))
+	);
+
+	return {
+		get perIngredient() { return perIngredient; },
+		get totalMacros() { return totalMacros; },
+		get totalMicros() { return totalMicros; },
+		get totalAminoAcids() { return totalAminoAcids; },
+		get coverage() { return coverage; },
+		get unmapped() { return unmapped; },
+	};
+}

src/lib/server/nutritionMatcher.ts

@@ -0,0 +1,816 @@
+/**
+ * Dual-source embedding-based ingredient matching engine.
+ * Priority: global overwrite → alias → BLS (German, primary) → USDA (English, fallback) → none
+ *
+ * BLS uses multilingual-e5-small for German ingredient names.
+ * USDA uses all-MiniLM-L6-v2 for English ingredient names.
+ */
+import { pipeline, type FeatureExtractionPipeline } from '@huggingface/transformers';
+import { readFileSync } from 'fs';
+import { resolve } from 'path';
+import { NUTRITION_DB, type NutritionEntry } from '$lib/data/nutritionDb';
+import { BLS_DB, type BlsEntry } from '$lib/data/blsDb';
+import { lookupAlias } from '$lib/data/ingredientAliases';
+import { canonicalizeUnit, resolveGramsPerUnit } from '$lib/data/unitConversions';
+import { resolveDefaultAmount } from '$lib/data/defaultAmounts';
+import type { NutritionMapping, NutritionPer100g } from '$types/types';
+import { NutritionOverwrite } from '$models/NutritionOverwrite';
+
+const USDA_MODEL = 'Xenova/all-MiniLM-L6-v2';
+const BLS_MODEL = 'Xenova/multilingual-e5-small';
+const USDA_EMBEDDINGS_PATH = resolve('src/lib/data/nutritionEmbeddings.json');
+const BLS_EMBEDDINGS_PATH = resolve('src/lib/data/blsEmbeddings.json');
+const CONFIDENCE_THRESHOLD = 0.45;
+
+// Lazy-loaded singletons — USDA
+let usdaEmbedder: FeatureExtractionPipeline | null = null;
+let usdaEmbeddingIndex: { fdcId: number; name: string; vector: number[] }[] | null = null;
+let nutritionByFdcId: Map<number, NutritionEntry> | null = null;
+let nutritionByName: Map<string, NutritionEntry> | null = null;
+
+// Lazy-loaded singletons — BLS
+let blsEmbedder: FeatureExtractionPipeline | null = null;
+let blsEmbeddingIndex: { blsCode: string; name: string; vector: number[] }[] | null = null;
+let blsByCode: Map<string, BlsEntry> | null = null;
+
+/** Modifiers to strip from ingredient names before matching */
+const STRIP_MODIFIERS = [
+	'warm', 'cold', 'hot', 'room temperature', 'lukewarm',
+	'fresh', 'freshly', 'dried', 'dry',
+	'finely', 'coarsely', 'roughly', 'thinly',
+	'chopped', 'diced', 'minced', 'sliced', 'grated', 'shredded',
+	'crushed', 'ground', 'whole', 'halved', 'quartered',
+	'peeled', 'unpeeled', 'pitted', 'seeded', 'deseeded',
+	'melted', 'softened', 'frozen', 'thawed', 'chilled',
+	'toasted', 'roasted', 'blanched', 'boiled', 'steamed',
+	'sifted', 'packed', 'loosely packed', 'firmly packed',
+	'small', 'medium', 'large', 'extra-large',
+	'organic', 'free-range', 'grass-fed',
+	'optional', 'to taste', 'as needed', 'for garnish', 'for serving',
+	'about', 'approximately', 'roughly',
+];
+
+/** German modifiers to strip */
+const STRIP_MODIFIERS_DE = [
+	'warm', 'kalt', 'heiß', 'lauwarm', 'zimmerwarm',
+	'frisch', 'getrocknet', 'trocken',
+	'fein', 'grob', 'dünn',
+	'gehackt', 'gewürfelt', 'geschnitten', 'gerieben', 'geraspelt',
+	'gemahlen', 'ganz', 'halbiert', 'geviertelt',
+	'geschält', 'entkernt', 'entsteint',
+	'geschmolzen', 'weich', 'gefroren', 'aufgetaut', 'gekühlt',
+	'geröstet', 'blanchiert', 'gekocht', 'gedämpft',
+	'gesiebt',
+	'klein', 'mittel', 'groß',
+	'bio', 'optional', 'nach Geschmack', 'nach Bedarf', 'zum Garnieren',
+	'etwa', 'ungefähr', 'ca',
+];
+
+// ── USDA helpers ──
+
+function getNutritionByName(): Map<string, NutritionEntry> {
+	if (!nutritionByName) {
+		nutritionByName = new Map();
+		for (const entry of NUTRITION_DB) nutritionByName.set(entry.name, entry);
+	}
+	return nutritionByName;
+}
+
+function getNutritionByFdcId(): Map<number, NutritionEntry> {
+	if (!nutritionByFdcId) {
+		nutritionByFdcId = new Map();
+		for (const entry of NUTRITION_DB) nutritionByFdcId.set(entry.fdcId, entry);
+	}
+	return nutritionByFdcId;
+}
+
+async function getUsdaEmbedder(): Promise<FeatureExtractionPipeline> {
+	if (!usdaEmbedder) {
+		usdaEmbedder = await pipeline('feature-extraction', USDA_MODEL, { dtype: 'q8' });
+	}
+	return usdaEmbedder;
+}
+
+function getUsdaEmbeddingIndex() {
+	if (!usdaEmbeddingIndex) {
+		const raw = JSON.parse(readFileSync(USDA_EMBEDDINGS_PATH, 'utf-8'));
+		usdaEmbeddingIndex = raw.entries;
+	}
+	return usdaEmbeddingIndex!;
+}
+
+// ── BLS helpers ──
+
+function getBlsByCode(): Map<string, BlsEntry> {
+	if (!blsByCode) {
+		blsByCode = new Map();
+		for (const entry of BLS_DB) blsByCode.set(entry.blsCode, entry);
+	}
+	return blsByCode;
+}
+
+async function getBlsEmbedder(): Promise<FeatureExtractionPipeline> {
+	if (!blsEmbedder) {
+		blsEmbedder = await pipeline('feature-extraction', BLS_MODEL, { dtype: 'q8' });
+	}
+	return blsEmbedder;
+}
+
+function getBlsEmbeddingIndex() {
+	if (!blsEmbeddingIndex) {
+		try {
+			const raw = JSON.parse(readFileSync(BLS_EMBEDDINGS_PATH, 'utf-8'));
+			blsEmbeddingIndex = raw.entries;
+		} catch {
+			// BLS embeddings not yet generated — skip
+			blsEmbeddingIndex = [];
+		}
+	}
+	return blsEmbeddingIndex!;
+}
+
+// ── Shared ──
+
+/** Normalize an ingredient name for matching (English) */
+export function normalizeIngredientName(name: string): string {
+	let normalized = name.toLowerCase().trim();
+	normalized = normalized.replace(/\(.*?\)/g, '').trim();
+	for (const mod of STRIP_MODIFIERS) {
+		normalized = normalized.replace(new RegExp(`\\b${mod}\\b,?\\s*`, 'gi'), '').trim();
+	}
+	normalized = normalized.replace(/\s+/g, ' ').replace(/,\s*$/, '').trim();
+	return normalized;
+}
+
+/** Normalize a German ingredient name for matching */
+export function normalizeIngredientNameDe(name: string): string {
+	let normalized = name.toLowerCase().trim();
+	normalized = normalized.replace(/\(.*?\)/g, '').trim();
+	for (const mod of STRIP_MODIFIERS_DE) {
+		normalized = normalized.replace(new RegExp(`\\b${mod}\\b,?\\s*`, 'gi'), '').trim();
+	}
+	normalized = normalized.replace(/\s+/g, ' ').replace(/,\s*$/, '').trim();
+	return normalized;
+}
+
+function cosineSimilarity(a: number[], b: number[]): number {
+	let dot = 0, normA = 0, normB = 0;
+	for (let i = 0; i < a.length; i++) {
+		dot += a[i] * b[i];
+		normA += a[i] * a[i];
+		normB += b[i] * b[i];
+	}
+	return dot / (Math.sqrt(normA) * Math.sqrt(normB));
+}
+
+/** Replace German umlauts and ß for fuzzy substring matching */
+function deUmlaut(s: string): string {
+	return s.replace(/ä/g, 'a').replace(/ö/g, 'o').replace(/ü/g, 'u').replace(/ß/g, 'ss');
+}
+
+/**
+ * Generate singular/stem forms for a German word for substring matching.
+ * Not full stemming — just common plural patterns.
+ */
+function germanSingulars(word: string): string[] {
+	const base = deUmlaut(word);
+	const forms = new Set([word, base]);
+	// -n: Tomaten→Tomate, Kartoffeln→Kartoffel
+	if (base.endsWith('n')) forms.add(base.slice(0, -1));
+	// -en: Bohnen→Bohn (then also try Bohne)
+	if (base.endsWith('en')) { forms.add(base.slice(0, -2)); forms.add(base.slice(0, -1)); }
+	// -er: Eier→Ei
+	if (base.endsWith('er')) forms.add(base.slice(0, -2));
+	// -e: Birne→Birn (for compound matching)
+	if (base.endsWith('e')) forms.add(base.slice(0, -1));
+	// -s: (loanwords)
+	if (base.endsWith('s')) forms.add(base.slice(0, -1));
+	return [...forms].filter(f => f.length >= 2);
+}
+
+/** BLS categories that are prepared dishes — exclude from embedding-only matching */
+const EXCLUDED_BLS_CATEGORIES = new Set([
+	'Gerichte und Rezepte', 'Backwaren', 'Supplemente',
+]);
+
+/**
+ * Generate search forms for an ingredient name, including compound word parts
+ * and individual words for multi-word queries.
+ * "Zitronenschale" → ["zitronenschale", "zitronen", "zitrone", "schale", ...]
+ * "cinnamon stick" → ["cinnamon stick", "cinnamon", "stick", ...]
+ */
+function searchForms(query: string): string[] {
+	const forms = new Set(germanSingulars(query.toLowerCase()));
+
+	// Add individual words from multi-word queries
+	const words = query.toLowerCase().split(/\s+/);
+	for (const word of words) {
+		if (word.length >= 3) {
+			forms.add(word);
+			forms.add(deUmlaut(word));
+			for (const s of germanSingulars(word)) forms.add(s);
+		}
+	}
+
+	// Try splitting common German compound suffixes
+	const compoundSuffixes = [
+		'schale', 'saft', 'stange', 'stück', 'pulver', 'blatt', 'blätter',
+		'korn', 'körner', 'mehl', 'öl', 'ol', 'flocken', 'creme', 'mark',
+		'wasser', 'milch', 'sahne', 'butter', 'käse', 'kase', 'soße', 'sosse',
+	];
+	const base = deUmlaut(query.toLowerCase());
+	for (const suffix of compoundSuffixes) {
+		if (base.endsWith(suffix) && base.length > suffix.length + 2) {
+			const stem = base.slice(0, -suffix.length);
+			forms.add(stem);
+			for (const s of germanSingulars(stem)) forms.add(s);
+		}
+	}
+
+	return [...forms].filter(f => f.length >= 3);
+}
+
+/**
+ * Find substring matches in a name list. Returns indices of entries
+ * where any form of the query appears in the entry name.
+ */
+function findSubstringMatches(
+	query: string,
+	entries: { name: string }[],
+): number[] {
+	const forms = searchForms(query);
+	const matches: number[] = [];
+
+	for (let i = 0; i < entries.length; i++) {
+		const entryName = deUmlaut(entries[i].name.toLowerCase());
+		for (const form of forms) {
+			if (entryName.includes(form)) {
+				matches.push(i);
+				break;
+			}
+		}
+	}
+	return matches;
+}
+
+/**
+ * Score a substring match, combining embedding similarity with heuristics:
+ * - Word-boundary matches preferred over mid-word matches
+ * - Shorter names are preferred (more likely base ingredients)
+ * - Names containing "roh" (raw) get a bonus
+ * - Names starting with the query get a bonus
+ */
+function substringMatchScore(
+	embeddingScore: number,
+	entryName: string,
+	queryForms: string[],
+): number {
+	let score = embeddingScore;
+	const nameLower = deUmlaut(entryName.toLowerCase());
+
+	// Check how the query matches: word-start vs mid-compound vs trailing mention
+	let hasStartMatch = false;
+	let hasEarlyMatch = false; // within first 15 chars
+	let hasWordBoundaryMatch = false;
+	for (const form of queryForms) {
+		// Start match: name begins with the query
+		if (nameLower.startsWith(form + ' ') || nameLower.startsWith(form + ',') || nameLower === form) {
+			hasStartMatch = true;
+		}
+		// Early match: appears within first ~15 chars (likely the main ingredient)
+		const pos = nameLower.indexOf(form);
+		if (pos >= 0 && pos < 15) hasEarlyMatch = true;
+		// Word-boundary match
+		const wordBoundary = new RegExp(`(^|[\\s,/])${form}([\\s,/]|$)`);
+		if (wordBoundary.test(nameLower)) hasWordBoundaryMatch = true;
+	}
+
+	// Strong bonus for name starting with query form
+	if (hasStartMatch) score += 0.2;
+	// Moderate bonus for early appearance in name
+	else if (hasEarlyMatch) score += 0.12;
+	// Small bonus for word-boundary match
+	else if (hasWordBoundaryMatch) score += 0.05;
+	// Penalty for late/trailing mentions (e.g., "mit Zimt" at end of a dish name)
+	else score -= 0.05;
+
+	// Bonus for short names (base ingredients like "Apfel roh" vs long dish names)
+	// Short names get strong boost, long names get penalized
+	score += Math.max(-0.1, (20 - nameLower.length) * 0.008);
+
+	// Bonus for "roh" (raw) — but only if query starts the name (avoid boosting unrelated raw items)
+	if (/\broh\b/.test(nameLower) && (hasStartMatch || hasWordBoundaryMatch)) score += 0.1;
+
+	return score;
+}
+
+/**
+ * Find best BLS match: substring-first hybrid.
+ * 1. Find BLS entries whose name contains the ingredient (lexical match)
+ * 2. Among those, rank by embedding + heuristic score
+ * 3. If no lexical matches, fall back to full embedding search
+ */
+async function blsEmbeddingMatch(
+	ingredientNameDe: string
+): Promise<{ entry: BlsEntry; confidence: number } | null> {
+	const index = getBlsEmbeddingIndex();
+	if (index.length === 0) return null;
+
+	const emb = await getBlsEmbedder();
+	const result = await emb(`query: ${ingredientNameDe}`, { pooling: 'mean', normalize: true });
+	const queryVector = Array.from(result.data as Float32Array);
+	const queryForms = searchForms(ingredientNameDe);
+
+	// Find lexical substring matches first
+	const substringIndices = findSubstringMatches(ingredientNameDe, index);
+
+	if (substringIndices.length > 0) {
+		let bestScore = -1;
+		let bestItem: typeof index[0] | null = null;
+
+		for (const idx of substringIndices) {
+			const item = index[idx];
+			const entry = getBlsByCode().get(item.blsCode);
+			if (entry && EXCLUDED_BLS_CATEGORIES.has(entry.category)) continue;
+			const embScore = cosineSimilarity(queryVector, item.vector);
+			const score = substringMatchScore(embScore, item.name, queryForms);
+			if (score > bestScore) {
+				bestScore = score;
+				bestItem = item;
+			}
+		}
+
+		if (bestItem) {
+			const entry = getBlsByCode().get(bestItem.blsCode);
+			if (entry) {
+				// Check if ANY substring match is a direct hit (query at start/early in name)
+				const nameNorm = deUmlaut(bestItem.name.toLowerCase());
+				const isDirectMatch = queryForms.some(f =>
+					nameNorm.startsWith(f + ' ') || nameNorm.startsWith(f + ',') ||
+					nameNorm.startsWith(f + '/') || nameNorm === f ||
+					(nameNorm.indexOf(f) >= 0 && nameNorm.indexOf(f) < 12)
+				);
+
+				// Only use substring match if it's a direct hit — otherwise the query
+				// word appears as a minor component in a dish name and we should
+				// fall through to full search / USDA
+				if (isDirectMatch) {
+					const conf = Math.min(Math.max(bestScore, 0.7), 1.0);
+					return { entry, confidence: conf };
+				}
+			}
+		}
+	}
+
+	// Fall back to full embedding search (excluding prepared dishes)
+	// Use higher threshold for pure embedding — short German words produce unreliable scores
+	const EMBEDDING_ONLY_THRESHOLD = 0.85;
+	let bestScore = -1;
+	let bestItem: typeof index[0] | null = null;
+	for (const item of index) {
+		const entry = getBlsByCode().get(item.blsCode);
+		if (entry && EXCLUDED_BLS_CATEGORIES.has(entry.category)) continue;
+		const score = cosineSimilarity(queryVector, item.vector);
+		if (score > bestScore) {
+			bestScore = score;
+			bestItem = item;
+		}
+	}
+
+	if (!bestItem || bestScore < EMBEDDING_ONLY_THRESHOLD) return null;
+	const entry = getBlsByCode().get(bestItem.blsCode);
+	if (!entry) return null;
+	return { entry, confidence: bestScore };
+}
+
+/** USDA categories that are prepared dishes — exclude from matching */
+const EXCLUDED_USDA_CATEGORIES = new Set(['Restaurant Foods']);
+
+/**
+ * Score a USDA substring match with heuristics similar to BLS.
+ */
+function usdaSubstringMatchScore(
+	embeddingScore: number,
+	entryName: string,
+	query: string,
+): number {
+	let score = embeddingScore;
+	const nameLower = entryName.toLowerCase();
+	const queryForms = searchForms(query);
+
+	// Check match position
+	let hasStartMatch = false;
+	let hasEarlyMatch = false;
+	for (const form of queryForms) {
+		if (nameLower.startsWith(form + ',') || nameLower.startsWith(form + ' ') || nameLower === form) {
+			hasStartMatch = true;
+		}
+		const pos = nameLower.indexOf(form);
+		if (pos >= 0 && pos < 15) hasEarlyMatch = true;
+	}
+
+	if (hasStartMatch) score += 0.2;
+	else if (hasEarlyMatch) score += 0.1;
+	else score -= 0.05;
+
+	// Bonus for short names — but moderate to avoid "Bread, X" beating "Spices, X, ground"
+	score += Math.max(-0.1, (25 - nameLower.length) * 0.003);
+
+	// Bonus for "raw" — base ingredient indicator (only if direct match)
+	if (/\braw\b/.test(nameLower) && (hasStartMatch || hasEarlyMatch)) score += 0.1;
+
+	// Bonus for category-style entries ("Spices, X" / "Seeds, X" / "Oil, X")
+	if (/^(spices|seeds|oil|nuts|fish|cheese|milk|cream|butter|flour|sugar),/i.test(nameLower)) {
+		score += 0.08;
+	}
+
+	return score;
+}
+
+/**
+ * Find best USDA match: substring-first hybrid.
+ * Same strategy as BLS: lexical matches first, heuristic re-ranking, then fallback.
+ */
+async function usdaEmbeddingMatch(
+	ingredientNameEn: string
+): Promise<{ entry: NutritionEntry; confidence: number } | null> {
+	const emb = await getUsdaEmbedder();
+	const index = getUsdaEmbeddingIndex();
+
+	const result = await emb(ingredientNameEn, { pooling: 'mean', normalize: true });
+	const queryVector = Array.from(result.data as Float32Array);
+
+	// Find lexical substring matches
+	const substringIndices = findSubstringMatches(ingredientNameEn, index);
+
+	if (substringIndices.length > 0) {
+		let bestScore = -1;
+		let bestItem: typeof index[0] | null = null;
+
+		for (const idx of substringIndices) {
+			const item = index[idx];
+			const entry = getNutritionByFdcId().get(item.fdcId);
+			if (entry && EXCLUDED_USDA_CATEGORIES.has(entry.category)) continue;
+			const embScore = cosineSimilarity(queryVector, item.vector);
+			const score = usdaSubstringMatchScore(embScore, item.name, ingredientNameEn);
+			if (score > bestScore) {
+				bestScore = score;
+				bestItem = item;
+			}
+		}
+
+		if (bestItem) {
+			const nutrition = getNutritionByFdcId().get(bestItem.fdcId);
+			if (nutrition) {
+				const nameNorm = bestItem.name.toLowerCase();
+				const forms = searchForms(ingredientNameEn);
+				const isDirectMatch = forms.some(f =>
+					nameNorm.startsWith(f + ',') || nameNorm.startsWith(f + ' ') ||
+					nameNorm === f || (nameNorm.indexOf(f) >= 0 && nameNorm.indexOf(f) < 15)
+				);
+				if (isDirectMatch) {
+					return { entry: nutrition, confidence: Math.min(Math.max(bestScore, 0.7), 1.0) };
+				}
+			}
+		}
+	}
+
+	// Full embedding search fallback (excluding restaurant foods)
+	let bestScore = -1;
+	let bestEntry: typeof index[0] | null = null;
+
+	for (const item of index) {
+		const entry = getNutritionByFdcId().get(item.fdcId);
+		if (entry && EXCLUDED_USDA_CATEGORIES.has(entry.category)) continue;
+		const score = cosineSimilarity(queryVector, item.vector);
+		if (score > bestScore) {
+			bestScore = score;
+			bestEntry = item;
+		}
+	}
+
+	if (!bestEntry || bestScore < CONFIDENCE_THRESHOLD) return null;
+	const nutrition = getNutritionByFdcId().get(bestEntry.fdcId);
+	if (!nutrition) return null;
+	return { entry: nutrition, confidence: bestScore };
+}
+
+/** Parse a recipe amount string to a number */
+export function parseAmount(amount: string): number {
+	if (!amount || !amount.trim()) return 0;
+	let s = amount.trim();
+
+	const rangeMatch = s.match(/^(\d+(?:[.,]\d+)?)\s*[-–]\s*(\d+(?:[.,]\d+)?)$/);
+	if (rangeMatch) {
+		return (parseFloat(rangeMatch[1].replace(',', '.')) + parseFloat(rangeMatch[2].replace(',', '.'))) / 2;
+	}
+
+	s = s.replace(',', '.');
+
+	const fractionMatch = s.match(/^(\d+)\s*\/\s*(\d+)$/);
+	if (fractionMatch) return parseInt(fractionMatch[1]) / parseInt(fractionMatch[2]);
+
+	const mixedMatch = s.match(/^(\d+)\s+(\d+)\s*\/\s*(\d+)$/);
+	if (mixedMatch) return parseInt(mixedMatch[1]) + parseInt(mixedMatch[2]) / parseInt(mixedMatch[3]);
+
+	const parsed = parseFloat(s);
+	return isNaN(parsed) ? 0 : parsed;
+}
+
+// ── Global overwrite cache ──
+let overwriteCache: Map<string, any> | null = null;
+let overwriteCacheTime = 0;
+const OVERWRITE_CACHE_TTL = 60_000; // 1 minute
+
+async function lookupGlobalOverwrite(normalizedNameDe: string): Promise<any | null> {
+	const now = Date.now();
+	if (!overwriteCache || now - overwriteCacheTime > OVERWRITE_CACHE_TTL) {
+		try {
+			const all = await NutritionOverwrite.find({}).lean();
+			overwriteCache = new Map(all.map((o: any) => [o.ingredientNameDe, o]));
+			overwriteCacheTime = now;
+		} catch {
+			overwriteCache = new Map();
+			overwriteCacheTime = now;
+		}
+	}
+	return overwriteCache.get(normalizedNameDe) || null;
+}
+
+/** Invalidate the overwrite cache (call after creating/updating/deleting overwrites) */
+export function invalidateOverwriteCache() {
+	overwriteCache = null;
+}
+
+/**
+ * Match a single ingredient against BLS (German, primary) then USDA (English, fallback).
+ */
+export async function matchIngredient(
+	ingredientNameDe: string,
+	ingredientNameEn: string | undefined,
+	unit: string,
+	amount: string,
+	sectionIndex: number,
+	ingredientIndex: number,
+): Promise<NutritionMapping> {
+	const normalizedEn = ingredientNameEn ? normalizeIngredientName(ingredientNameEn) : '';
+	const normalizedDe = normalizeIngredientNameDe(ingredientNameDe);
+
+	let source: 'bls' | 'usda' = 'usda';
+	let fdcId: number | undefined;
+	let blsCode: string | undefined;
+	let nutritionDbName: string | undefined;
+	let matchMethod: NutritionMapping['matchMethod'] = 'none';
+	let confidence = 0;
+	let portions: { description: string; grams: number }[] = [];
+	let category = '';
+
+	// 0. Check global overwrites (DB-stored manual mappings)
+	const overwrite = await lookupGlobalOverwrite(normalizedDe);
+	if (overwrite) {
+		if (overwrite.excluded || overwrite.source === 'skip') {
+			return {
+				sectionIndex, ingredientIndex,
+				ingredientName: ingredientNameEn || ingredientNameDe,
+				ingredientNameDe,
+				source: 'usda', matchMethod: 'manual', matchConfidence: 1,
+				gramsPerUnit: 0, defaultAmountUsed: false,
+				unitConversionSource: 'none', manuallyEdited: false, excluded: true,
+			};
+		}
+		if (overwrite.source === 'bls' && overwrite.blsCode) {
+			const entry = getBlsByCode().get(overwrite.blsCode);
+			if (entry) {
+				source = 'bls'; blsCode = overwrite.blsCode;
+				nutritionDbName = entry.nameDe; matchMethod = 'exact';
+				confidence = 1.0; category = entry.category;
+			}
+		} else if (overwrite.source === 'usda' && overwrite.fdcId) {
+			const entry = getNutritionByFdcId().get(overwrite.fdcId);
+			if (entry) {
+				source = 'usda'; fdcId = overwrite.fdcId;
+				nutritionDbName = entry.name; matchMethod = 'exact';
+				confidence = 1.0; portions = entry.portions; category = entry.category;
+			}
+		}
+	}
+
+	// 1. Try alias table (English, fast path → USDA)
+	if (matchMethod === 'none' && normalizedEn) {
+		const aliasResult = lookupAlias(normalizedEn);
+		if (aliasResult) {
+			const entry = getNutritionByName().get(aliasResult);
+			if (entry) {
+				source = 'usda';
+				fdcId = entry.fdcId;
+				nutritionDbName = entry.name;
+				matchMethod = 'exact';
+				confidence = 1.0;
+				portions = entry.portions;
+				category = entry.category;
+			}
+		}
+	}
+
+	// 2. Try BLS embedding match (German name, primary)
+	if (matchMethod === 'none' && normalizedDe) {
+		const blsResult = await blsEmbeddingMatch(normalizedDe);
+		if (blsResult) {
+			source = 'bls';
+			blsCode = blsResult.entry.blsCode;
+			nutritionDbName = blsResult.entry.nameDe;
+			matchMethod = 'embedding';
+			confidence = blsResult.confidence;
+			category = blsResult.entry.category;
+			// BLS has no portion data — will use unit conversion tables
+		}
+	}
+
+	// 3. Try USDA embedding match (English name, fallback)
+	if (matchMethod === 'none' && normalizedEn) {
+		const usdaResult = await usdaEmbeddingMatch(normalizedEn);
+		if (usdaResult) {
+			source = 'usda';
+			fdcId = usdaResult.entry.fdcId;
+			nutritionDbName = usdaResult.entry.name;
+			matchMethod = 'embedding';
+			confidence = usdaResult.confidence;
+			portions = usdaResult.entry.portions;
+			category = usdaResult.entry.category;
+		}
+	}
+
+	// Resolve unit conversion
+	const canonicalUnit = canonicalizeUnit(unit);
+	let parsedAmount = parseAmount(amount);
+	let defaultAmountUsed = false;
+
+	// If no amount given, try default amounts
+	if (!parsedAmount && matchMethod !== 'none') {
+		const nameForDefault = normalizedEn || normalizedDe;
+		const defaultAmt = resolveDefaultAmount(nameForDefault, category);
+		if (defaultAmt) {
+			parsedAmount = defaultAmt.amount;
+			const defaultCanonical = canonicalizeUnit(defaultAmt.unit);
+			const unitResolution = resolveGramsPerUnit(defaultCanonical, portions);
+			defaultAmountUsed = true;
+
+			return {
+				sectionIndex, ingredientIndex,
+				ingredientName: ingredientNameEn || ingredientNameDe,
+				ingredientNameDe,
+				source, fdcId, blsCode, nutritionDbName,
+				matchConfidence: confidence, matchMethod,
+				gramsPerUnit: unitResolution.grams,
+				defaultAmountUsed,
+				unitConversionSource: unitResolution.source,
+				manuallyEdited: false,
+				excluded: defaultAmt.amount === 0,
+			};
+		}
+	}
+
+	const unitResolution = resolveGramsPerUnit(canonicalUnit, portions);
+
+	return {
+		sectionIndex, ingredientIndex,
+		ingredientName: ingredientNameEn || ingredientNameDe,
+		ingredientNameDe,
+		source, fdcId, blsCode, nutritionDbName,
+		matchConfidence: confidence, matchMethod,
+		gramsPerUnit: unitResolution.grams,
+		defaultAmountUsed,
+		unitConversionSource: unitResolution.source,
+		manuallyEdited: false,
+		excluded: false,
+	};
+}
+
+/**
+ * Generate nutrition mappings for all ingredients in a recipe.
+ * Uses German names for BLS matching and English names for USDA fallback.
+ */
+export async function generateNutritionMappings(
+	ingredients: any[],
+	translatedIngredients?: any[],
+): Promise<NutritionMapping[]> {
+	const mappings: NutritionMapping[] = [];
+
+	for (let sectionIdx = 0; sectionIdx < ingredients.length; sectionIdx++) {
+		const sectionDe = ingredients[sectionIdx];
+		const sectionEn = translatedIngredients?.[sectionIdx];
+
+		if (sectionDe.type === 'reference' || !sectionDe.list) continue;
+
+		for (let itemIdx = 0; itemIdx < sectionDe.list.length; itemIdx++) {
+			const itemDe = sectionDe.list[itemIdx];
+			const itemEn = sectionEn?.list?.[itemIdx];
+
+			const mapping = await matchIngredient(
+				itemDe.name,
+				itemEn?.name || undefined,
+				itemDe.unit || '',
+				itemDe.amount || '',
+				sectionIdx,
+				itemIdx,
+			);
+
+			mappings.push(mapping);
+		}
+	}
+
+	return mappings;
+}
+
+/** Look up a USDA NutritionEntry by fdcId */
+export function getNutritionEntryByFdcId(fdcId: number): NutritionEntry | undefined {
+	return getNutritionByFdcId().get(fdcId);
+}
+
+/** Look up a BLS entry by blsCode */
+export function getBlsEntryByCode(code: string): BlsEntry | undefined {
+	return getBlsByCode().get(code);
+}
+
+/** Resolve per100g data for a mapping from BLS or USDA */
+export function resolvePer100g(mapping: any): NutritionPer100g | null {
+	if (mapping.blsCode && mapping.source === 'bls') {
+		const entry = getBlsByCode().get(mapping.blsCode);
+		return entry?.per100g ?? null;
+	}
+	if (mapping.fdcId) {
+		const entry = getNutritionByFdcId().get(mapping.fdcId);
+		return entry?.per100g ?? null;
+	}
+	return null;
+}
+
+/**
+ * Compute absolute nutrition totals for a recipe's ingredients using its nutritionMappings.
+ * Returns total nutrients (not per-100g), optionally scaled by a multiplier.
+ */
+export function computeRecipeNutritionTotals(
+	ingredients: any[],
+	nutritionMappings: any[],
+	multiplier = 1,
+): Record<string, number> {
+	const index = new Map(
+		(nutritionMappings || []).map((m: any) => [`${m.sectionIndex}-${m.ingredientIndex}`, m])
+	);
+
+	const totals: Record<string, number> = {};
+
+	// Collect section names for dedup (skip ingredients referencing earlier sections)
+	const sectionNames = new Set<string>();
+
+	for (let si = 0; si < ingredients.length; si++) {
+		const section = ingredients[si];
+		if (section.type === 'reference' || !section.list) {
+			if (section.name) sectionNames.add(stripHtml(section.name).toLowerCase().trim());
+			continue;
+		}
+		if (section.name) sectionNames.add(stripHtml(section.name).toLowerCase().trim());
+	}
+
+	for (let si = 0; si < ingredients.length; si++) {
+		const section = ingredients[si];
+		if (section.type === 'reference' || !section.list) continue;
+
+		const currentSectionName = section.name ? stripHtml(section.name).toLowerCase().trim() : '';
+
+		for (let ii = 0; ii < section.list.length; ii++) {
+			const item = section.list[ii];
+			const rawName = item.name || '';
+			const itemName = stripHtml(rawName).toLowerCase().trim();
+
+			// Skip anchor-tag references to other recipes (handled separately)
+			if (/<a\s/i.test(rawName)) continue;
+
+			// Skip if this ingredient name matches a DIFFERENT section's name
+			if (itemName && sectionNames.has(itemName) && itemName !== currentSectionName) continue;
+
+			const mapping = index.get(`${si}-${ii}`);
+			if (!mapping || mapping.matchMethod === 'none' || mapping.excluded) continue;
+
+			const per100g = resolvePer100g(mapping);
+			if (!per100g) continue;
+
+			const amount = parseAmount(item.amount || '') || (mapping.defaultAmountUsed ? 1 : 0);
+			const grams = amount * multiplier * (mapping.gramsPerUnit || 0);
+			const factor = grams / 100;
+
+			for (const [key, value] of Object.entries(per100g)) {
+				if (typeof value === 'number') {
+					totals[key] = (totals[key] || 0) + factor * value;
+				}
+			}
+		}
+	}
+
+	return totals;
+}
+
+/** Strip HTML tags from a string */
+function stripHtml(html: string): string {
+	return html.replace(/<[^>]*>/g, '');
+}

src/models/NutritionOverwrite.ts

@@ -0,0 +1,25 @@
+import mongoose from 'mongoose';
+
+/**
+ * Global nutrition overwrites — manually map ingredient names to BLS/USDA entries.
+ * Checked during nutrition generation before embedding search.
+ * Can also mark ingredients as excluded (skipped).
+ */
+const NutritionOverwriteSchema = new mongoose.Schema({
+  // The normalized ingredient name this overwrite matches (German, lowercase)
+  ingredientNameDe: { type: String, required: true },
+  // Optional English name for display
+  ingredientNameEn: { type: String },
+  // What to map to
+  source: { type: String, enum: ['bls', 'usda', 'skip'], required: true },
+  fdcId: { type: Number },
+  blsCode: { type: String },
+  nutritionDbName: { type: String },
+  // Whether this ingredient should be excluded from nutrition calculation
+  excluded: { type: Boolean, default: false },
+}, { timestamps: true });
+
+NutritionOverwriteSchema.index({ ingredientNameDe: 1 }, { unique: true });
+
+delete mongoose.models.NutritionOverwrite;
+export const NutritionOverwrite = mongoose.model('NutritionOverwrite', NutritionOverwriteSchema);

src/models/Recipe.ts

@@ -163,6 +163,25 @@ const RecipeSchema = new mongoose.Schema(
        }
      },
 
+     // Nutrition calorie/macro mapping for each ingredient
+     nutritionMappings: [{
+       sectionIndex: { type: Number, required: true },
+       ingredientIndex: { type: Number, required: true },
+       ingredientName: { type: String },
+       ingredientNameDe: { type: String },
+       source: { type: String, enum: ['bls', 'usda', 'manual'] },
+       fdcId: { type: Number },
+       blsCode: { type: String },
+       nutritionDbName: { type: String },
+       matchConfidence: { type: Number },
+       matchMethod: { type: String, enum: ['exact', 'embedding', 'manual', 'none'] },
+       gramsPerUnit: { type: Number },
+       defaultAmountUsed: { type: Boolean, default: false },
+       unitConversionSource: { type: String, enum: ['direct', 'density', 'usda_portion', 'estimate', 'manual', 'none'] },
+       manuallyEdited: { type: Boolean, default: false },
+       excluded: { type: Boolean, default: false },
+     }],
+
      // Translation metadata for tracking changes
      translationMetadata: {
        lastModifiedGerman: {type: Date},
@@ -177,6 +196,6 @@ RecipeSchema.index({ "translations.en.translationStatus": 1 });
 
 import type { RecipeModelType } from '$types/types';
 
-let _recipeModel: mongoose.Model<RecipeModelType>;
+// Delete cached model on HMR so schema changes (e.g. new fields) are picked up
-try { _recipeModel = mongoose.model<RecipeModelType>("Recipe"); } catch { _recipeModel = mongoose.model<RecipeModelType>("Recipe", RecipeSchema); }
+delete mongoose.models.Recipe;
-export const Recipe = _recipeModel;
+export const Recipe = mongoose.model<RecipeModelType>("Recipe", RecipeSchema);

src/routes/[recipeLang=recipeLang]/admin/nutrition/+page.svelte

@@ -0,0 +1,308 @@
+<script>
+	let { data } = $props();
+	const isEnglish = data.lang === 'en';
+	const recipeLang = data.recipeLang;
+
+	let processing = $state(false);
+	let singleProcessing = $state('');
+	/** @type {any} */
+	let batchResult = $state(null);
+	/** @type {any} */
+	let singleResult = $state(null);
+	let errorMsg = $state('');
+	let recipeName = $state('');
+
+	async function generateAll() {
+		processing = true;
+		errorMsg = '';
+		batchResult = null;
+
+		try {
+			const response = await fetch(`/api/${recipeLang}/nutrition/generate-all`, {
+				method: 'POST',
+			});
+			const result = await response.json();
+
+			if (!response.ok) {
+				throw new Error(result.message || 'Failed to generate nutrition mappings');
+			}
+
+			batchResult = result;
+		} catch (err) {
+			errorMsg = err instanceof Error ? err.message : 'An error occurred';
+		} finally {
+			processing = false;
+		}
+	}
+
+	async function generateSingle() {
+		if (!recipeName.trim()) return;
+		singleProcessing = recipeName.trim();
+		singleResult = null;
+		errorMsg = '';
+
+		try {
+			const response = await fetch(`/api/${recipeLang}/nutrition/generate/${encodeURIComponent(recipeName.trim())}`, {
+				method: 'POST',
+			});
+			const result = await response.json();
+
+			if (!response.ok) {
+				throw new Error(result.message || 'Failed to generate nutrition mappings');
+			}
+
+			singleResult = result;
+		} catch (err) {
+			errorMsg = err instanceof Error ? err.message : 'An error occurred';
+		} finally {
+			singleProcessing = '';
+		}
+	}
+</script>
+
+<style>
+	.container {
+		max-width: 1000px;
+		margin: 2rem auto;
+		padding: 2rem;
+	}
+	h1 {
+		color: var(--nord0);
+		margin-bottom: 0.5rem;
+	}
+	@media (prefers-color-scheme: dark) {
+		:global(:root:not([data-theme="light"])) h1 { color: white; }
+	}
+	:global(:root[data-theme="dark"]) h1 { color: white; }
+
+	.subtitle {
+		color: var(--nord3);
+		margin-bottom: 2rem;
+	}
+
+	.section {
+		background: var(--nord6, #eceff4);
+		border-radius: 8px;
+		padding: 1.5rem;
+		margin-bottom: 1.5rem;
+	}
+	@media (prefers-color-scheme: dark) {
+		:global(:root:not([data-theme="light"])) .section { background: var(--nord1); }
+	}
+	:global(:root[data-theme="dark"]) .section { background: var(--nord1); }
+
+	.section h2 {
+		margin-top: 0;
+		font-size: 1.3rem;
+	}
+
+	.input-row {
+		display: flex;
+		gap: 0.75rem;
+		align-items: center;
+		flex-wrap: wrap;
+	}
+	.input-row input {
+		flex: 1;
+		min-width: 200px;
+		padding: 0.5rem 0.75rem;
+		border: 1px solid var(--color-border, #ccc);
+		border-radius: 6px;
+		font-size: 1rem;
+		background: transparent;
+		color: inherit;
+	}
+
+	button {
+		padding: 0.5rem 1.25rem;
+		border: none;
+		border-radius: 6px;
+		font-size: 1rem;
+		cursor: pointer;
+		background: var(--nord10, #5e81ac);
+		color: white;
+		transition: opacity 150ms;
+	}
+	button:disabled {
+		opacity: 0.5;
+		cursor: not-allowed;
+	}
+	button:hover:not(:disabled) {
+		opacity: 0.85;
+	}
+	.btn-danger {
+		background: var(--nord11, #bf616a);
+	}
+
+	.result-box {
+		margin-top: 1rem;
+		padding: 1rem;
+		border-radius: 6px;
+		background: var(--nord0, #2e3440);
+		color: var(--nord6, #eceff4);
+		font-family: monospace;
+		font-size: 0.85rem;
+		max-height: 400px;
+		overflow-y: auto;
+	}
+
+	.result-table {
+		width: 100%;
+		border-collapse: collapse;
+		font-size: 0.85rem;
+	}
+	.result-table th,
+	.result-table td {
+		text-align: left;
+		padding: 0.3rem 0.6rem;
+		border-bottom: 1px solid var(--nord3, #4c566a);
+	}
+	.result-table th {
+		color: var(--nord9, #81a1c1);
+	}
+
+	.coverage-bar {
+		display: inline-block;
+		height: 6px;
+		border-radius: 3px;
+		background: var(--nord14, #a3be8c);
+		vertical-align: middle;
+	}
+	.coverage-bar-bg {
+		display: inline-block;
+		width: 60px;
+		height: 6px;
+		border-radius: 3px;
+		background: var(--nord3, #4c566a);
+		vertical-align: middle;
+		margin-right: 0.4rem;
+	}
+
+	.error {
+		color: var(--nord11, #bf616a);
+		margin-top: 0.75rem;
+		font-weight: bold;
+	}
+
+	.summary {
+		display: flex;
+		gap: 2rem;
+		flex-wrap: wrap;
+		margin-top: 0.75rem;
+		font-size: 1.1rem;
+	}
+	.summary-stat {
+		text-align: center;
+	}
+	.summary-stat .value {
+		font-size: 1.8rem;
+		font-weight: bold;
+		color: var(--nord10, #5e81ac);
+	}
+	.summary-stat .label {
+		font-size: 0.85rem;
+		color: var(--nord3);
+	}
+</style>
+
+<svelte:head>
+	<title>{isEnglish ? 'Nutrition Mappings' : 'Nährwert-Zuordnungen'}</title>
+</svelte:head>
+
+<div class="container">
+	<h1>{isEnglish ? 'Nutrition Mappings' : 'Nährwert-Zuordnungen'}</h1>
+	<p class="subtitle">
+		{isEnglish
+			? 'Generate ingredient-to-calorie mappings using ML embeddings. Manually edited mappings are preserved.'
+			: 'Zutatenzuordnungen zu Kaloriendaten mittels ML-Embeddings generieren. Manuell bearbeitete Zuordnungen bleiben erhalten.'}
+	</p>
+
+	<!-- Single recipe -->
+	<div class="section">
+		<h2>{isEnglish ? 'Single Recipe' : 'Einzelnes Rezept'}</h2>
+		<div class="input-row">
+			<input
+				type="text"
+				placeholder={isEnglish ? 'Recipe short_name (e.g., maccaroni)' : 'Rezept short_name (z.B. maccaroni)'}
+				bind:value={recipeName}
+				onkeydown={(e) => e.key === 'Enter' && generateSingle()}
+			/>
+			<button disabled={!!singleProcessing || !recipeName.trim()} onclick={generateSingle}>
+				{singleProcessing ? (isEnglish ? 'Processing...' : 'Verarbeite...') : (isEnglish ? 'Generate' : 'Generieren')}
+			</button>
+		</div>
+
+		{#if singleResult}
+			<div class="result-box">
+				<p>{singleResult.count} {isEnglish ? 'ingredients mapped' : 'Zutaten zugeordnet'}</p>
+				<table class="result-table">
+					<thead><tr><th>#</th><th>{isEnglish ? 'Ingredient' : 'Zutat'}</th><th>{isEnglish ? 'Match' : 'Treffer'}</th><th>{isEnglish ? 'Confidence' : 'Konfidenz'}</th><th>g/unit</th></tr></thead>
+					<tbody>
+						{#each singleResult.mappings as m, i}
+							<tr>
+								<td>{i + 1}</td>
+								<td>{m.ingredientName}</td>
+								<td>{m.nutritionDbName || '—'}</td>
+								<td>{m.matchConfidence ? (m.matchConfidence * 100).toFixed(0) + '%' : '—'}</td>
+								<td>{m.gramsPerUnit || '—'}</td>
+							</tr>
+						{/each}
+					</tbody>
+				</table>
+			</div>
+		{/if}
+	</div>
+
+	<!-- Batch all recipes -->
+	<div class="section">
+		<h2>{isEnglish ? 'Batch: All Recipes' : 'Batch: Alle Rezepte'}</h2>
+		<p>{isEnglish
+			? 'Regenerate nutrition mappings for all recipes. This may take a few minutes on first run (ML model loading).'
+			: 'Nährwertzuordnungen für alle Rezepte neu generieren. Beim ersten Durchlauf kann dies einige Minuten dauern (ML-Modell wird geladen).'}
+		</p>
+		<button class="btn-danger" disabled={processing} onclick={generateAll}>
+			{processing ? (isEnglish ? 'Processing all recipes...' : 'Verarbeite alle Rezepte...') : (isEnglish ? 'Generate All' : 'Alle generieren')}
+		</button>
+
+		{#if batchResult}
+			<div class="summary">
+				<div class="summary-stat">
+					<div class="value">{batchResult.recipes}</div>
+					<div class="label">{isEnglish ? 'Recipes' : 'Rezepte'}</div>
+				</div>
+				<div class="summary-stat">
+					<div class="value">{batchResult.totalMapped}/{batchResult.totalIngredients}</div>
+					<div class="label">{isEnglish ? 'Ingredients Mapped' : 'Zutaten zugeordnet'}</div>
+				</div>
+				<div class="summary-stat">
+					<div class="value">{batchResult.coverage}</div>
+					<div class="label">{isEnglish ? 'Coverage' : 'Abdeckung'}</div>
+				</div>
+			</div>
+
+			<div class="result-box">
+				<table class="result-table">
+					<thead><tr><th>{isEnglish ? 'Recipe' : 'Rezept'}</th><th>{isEnglish ? 'Mapped' : 'Zugeordnet'}</th><th>{isEnglish ? 'Coverage' : 'Abdeckung'}</th></tr></thead>
+					<tbody>
+						{#each batchResult.details as detail}
+							<tr>
+								<td>{detail.name}</td>
+								<td>{detail.mapped}/{detail.total}</td>
+								<td>
+									<span class="coverage-bar-bg">
+										<span class="coverage-bar" style="width: {detail.total ? (detail.mapped / detail.total * 60) : 0}px"></span>
+									</span>
+									{detail.total ? Math.round(detail.mapped / detail.total * 100) : 0}%
+								</td>
+							</tr>
+						{/each}
+					</tbody>
+				</table>
+			</div>
+		{/if}
+	</div>
+
+	{#if errorMsg}
+		<p class="error">{errorMsg}</p>
+	{/if}
+</div>

src/routes/[recipeLang=recipeLang]/administration/+page.svelte

@@ -33,6 +33,14 @@
 				: 'Dominante Farben aus Rezeptbildern für Ladeplatzhalter extrahieren',
 			href: `/${data.recipeLang}/admin/image-colors`,
 			icon: '🎨'
+		},
+		{
+			title: isEnglish ? 'Nutrition Mappings' : 'Nährwert-Zuordnungen',
+			description: isEnglish
+				? 'Generate or regenerate calorie and nutrition data for all recipes'
+				: 'Kalorien- und Nährwertdaten für alle Rezepte generieren oder aktualisieren',
+			href: `/${data.recipeLang}/admin/nutrition`,
+			icon: '🥗'
 		}
 	];
 </script>

src/routes/[recipeLang=recipeLang]/edit/[name]/+page.server.ts

@@ -1,8 +1,10 @@
 import type { Actions, PageServerLoad } from "./$types";
 import { redirect, fail } from "@sveltejs/kit";
 import { Recipe } from '$models/Recipe';
+import { NutritionOverwrite } from '$models/NutritionOverwrite';
 import { dbConnect } from '$utils/db';
 import { invalidateRecipeCaches } from '$lib/server/cache';
+import { invalidateOverwriteCache } from '$lib/server/nutritionMatcher';
 import { IMAGE_DIR } from '$env/static/private';
 import { rename, access, unlink } from 'fs/promises';
 import { join } from 'path';
@@ -209,6 +211,44 @@ export const actions = {
 					});
 				}
 
+				// Save nutrition mappings (deferred from nutrition UI)
+				const nutritionMappingsJson = formData.get('nutritionMappings_json')?.toString();
+				if (nutritionMappingsJson) {
+					try {
+						const mappings = JSON.parse(nutritionMappingsJson);
+						if (mappings.length > 0) {
+							await Recipe.updateOne(
+								{ short_name: recipeData.short_name },
+								{ $set: { nutritionMappings: mappings } }
+							);
+						}
+					} catch (e) {
+						console.error('Failed to save nutrition mappings:', e);
+					}
+				}
+
+				// Save global nutrition overwrites
+				const globalOverwritesJson = formData.get('globalOverwrites_json')?.toString();
+				if (globalOverwritesJson) {
+					try {
+						const overwrites = JSON.parse(globalOverwritesJson);
+						for (const ow of overwrites) {
+							if (ow.ingredientNameDe) {
+								await NutritionOverwrite.findOneAndUpdate(
+									{ ingredientNameDe: ow.ingredientNameDe },
+									ow,
+									{ upsert: true, runValidators: true }
+								);
+							}
+						}
+						if (overwrites.length > 0) {
+							invalidateOverwriteCache();
+						}
+					} catch (e) {
+						console.error('Failed to save global overwrites:', e);
+					}
+				}
+
 				// Invalidate recipe caches after successful update
 				await invalidateRecipeCaches();
 

src/routes/[recipeLang=recipeLang]/edit/[name]/+page.svelte

@@ -170,33 +170,40 @@
 		return changed;
 	}
 
-	// Show translation workflow before submission
+	// Save recipe directly (no translation workflow)
-	function prepareSubmit() {
+	async function saveRecipe() {
-		// Client-side validation
 		if (!short_name.trim()) {
-			toast.error('Bitte geben Sie einen Kurznamen ein');
+			toast.error('Bitte einen Kurznamen eingeben');
 			return;
 		}
 		if (!card_data.name) {
-			toast.error('Bitte geben Sie einen Namen ein');
+			toast.error('Bitte einen Namen eingeben');
 			return;
 		}
-
+		// Mark translation as needing update if fields changed
-		// Only detect changed fields if there's an existing translation
+		if (translationData) {
-		changedFields = translationData ? detectChangedFields() : [];
+			const changed = detectChangedFields();
-		showTranslationWorkflow = true;
+			if (changed.length > 0) {
-
+				translationData.translationStatus = 'needs_update';
-		// Scroll to translation section
+				translationData.changedFields = changed;
-		setTimeout(() => {
+			}
-			document.getElementById('translation-section')?.scrollIntoView({ behavior: 'smooth' });
+		}
-		}, 100);
+		await tick();
+		formElement.requestSubmit();
 	}
 
-	// Force full retranslation of entire recipe
+	// Open translation workflow (optional)
-	function forceFullRetranslation() {
+	function openTranslation() {
-		changedFields = [];
+		if (!short_name.trim()) {
+			toast.error('Bitte einen Kurznamen eingeben');
+			return;
+		}
+		if (!card_data.name) {
+			toast.error('Bitte einen Namen eingeben');
+			return;
+		}
+		changedFields = translationData ? detectChangedFields() : [];
 		showTranslationWorkflow = true;
-
 		setTimeout(() => {
 			document.getElementById('translation-section')?.scrollIntoView({ behavior: 'smooth' });
 		}, 100);
@@ -237,6 +244,151 @@
 		showTranslationWorkflow = false;
 	}
 
+	// Nutrition state — all edits are local until form save
+	let nutritionMappings = $state<any[]>(data.recipe.nutritionMappings || []);
+	let generatingNutrition = $state(false);
+	let searchQueries = $state<Record<string, string>>({});
+	let searchResults = $state<Record<string, { source: 'bls' | 'usda'; id: string; name: string; category: string; calories: number }[]>>({});
+	let searchTimers = $state<Record<string, ReturnType<typeof setTimeout>>>({});
+	let globalToggle = $state<Record<string, boolean>>({});
+
+	function mappingKey(m: any) {
+		return `${m.sectionIndex}-${m.ingredientIndex}`;
+	}
+
+	// Global overwrites loaded from DB — used to init toggle state
+	let globalOverwriteNames = $state<Set<string>>(new Set());
+
+	async function loadGlobalOverwrites() {
+		try {
+			const res = await fetch('/api/nutrition/overwrites');
+			if (res.ok) {
+				const overwrites: any[] = await res.json();
+				globalOverwriteNames = new Set(overwrites.map((o: any) => o.ingredientNameDe));
+			}
+		} catch { /* ignore */ }
+	}
+
+	// Ensure globalToggle entries exist for all mappings, init from DB overwrites
+	function initGlobalToggles() {
+		for (const m of nutritionMappings) {
+			const key = mappingKey(m);
+			if (!(key in globalToggle)) {
+				const deName = (m.ingredientNameDe || m.ingredientName || '').toLowerCase().trim();
+				globalToggle[key] = globalOverwriteNames.has(deName);
+			}
+		}
+	}
+
+	// Pre-init all toggles to false (prevents bind:checked={undefined}), then load real state
+	initGlobalToggles();
+	if (nutritionMappings.length > 0) {
+		loadGlobalOverwrites().then(() => {
+			// Re-init with real overwrite data (overwrite the false defaults)
+			for (const m of nutritionMappings) {
+				const key = mappingKey(m);
+				const deName = (m.ingredientNameDe || m.ingredientName || '').toLowerCase().trim();
+				globalToggle[key] = globalOverwriteNames.has(deName);
+			}
+		});
+	}
+
+	async function generateNutrition() {
+		generatingNutrition = true;
+		try {
+			const res = await fetch(`/api/rezepte/nutrition/generate/${encodeURIComponent(short_name.trim())}?preview=true`, { method: 'POST' });
+			if (!res.ok) {
+				const err = await res.json().catch(() => ({ message: res.statusText }));
+				throw new Error(err.message || `HTTP ${res.status}`);
+			}
+			const result = await res.json();
+			// Merge: keep local manual edits, use auto for the rest
+			const manualMap = new Map(
+				nutritionMappings
+					.filter((m: any) => m.manuallyEdited)
+					.map((m: any) => [mappingKey(m), m])
+			);
+			nutritionMappings = result.mappings.map((m: any) => {
+				const key = mappingKey(m);
+				return manualMap.get(key) || m;
+			});
+			await loadGlobalOverwrites();
+			initGlobalToggles();
+			const mapped = nutritionMappings.filter((m: any) => m.matchMethod !== 'none').length;
+			toast.success(`Nährwerte generiert: ${mapped}/${result.count} Zutaten zugeordnet`);
+		} catch (e: any) {
+			toast.error(`Fehler: ${e.message}`);
+		} finally {
+			generatingNutrition = false;
+		}
+	}
+
+	function handleSearchInput(key: string, value: string) {
+		searchQueries[key] = value;
+		if (searchTimers[key]) clearTimeout(searchTimers[key]);
+		if (value.length < 2) {
+			searchResults[key] = [];
+			return;
+		}
+		searchTimers[key] = setTimeout(async () => {
+			try {
+				const res = await fetch(`/api/nutrition/search?q=${encodeURIComponent(value)}`);
+				if (res.ok) searchResults[key] = await res.json();
+			} catch { /* ignore */ }
+		}, 250);
+	}
+
+	function assignNutritionEntry(mapping: any, entry: { source: 'bls' | 'usda'; id: string; name: string }) {
+		const key = mappingKey(mapping);
+		if (entry.source === 'bls') {
+			mapping.blsCode = entry.id;
+			mapping.source = 'bls';
+		} else {
+			mapping.fdcId = parseInt(entry.id);
+			mapping.source = 'usda';
+		}
+		mapping.nutritionDbName = entry.name;
+		mapping.matchMethod = 'manual';
+		mapping.matchConfidence = 1;
+		mapping.excluded = false;
+		mapping.manuallyEdited = true;
+		searchResults[key] = [];
+		searchQueries[key] = '';
+		const isGlobal = globalToggle[key] || false;
+		toast.success(`${mapping.ingredientNameDe} → ${entry.name}${isGlobal ? ' (global)' : ''}`);
+	}
+
+	function skipIngredient(mapping: any) {
+		const key = mappingKey(mapping);
+		mapping.excluded = true;
+		mapping.matchMethod = 'manual';
+		mapping.manuallyEdited = true;
+		searchResults[key] = [];
+		searchQueries[key] = '';
+		const isGlobal = globalToggle[key] || false;
+		toast.success(`${mapping.ingredientNameDe} übersprungen${isGlobal ? ' (global)' : ''}`);
+	}
+
+	async function revertToAuto(mapping: any) {
+		mapping.manuallyEdited = false;
+		mapping.excluded = false;
+		await generateNutrition();
+	}
+
+	function getGlobalOverwrites() {
+		return nutritionMappings
+			.filter((m: any) => globalToggle[mappingKey(m)])
+			.map((m: any) => ({
+				ingredientNameDe: (m.ingredientNameDe || m.ingredientName).toLowerCase().trim(),
+				ingredientNameEn: m.ingredientName,
+				source: m.excluded ? 'skip' : (m.source || 'usda'),
+				fdcId: m.fdcId,
+				blsCode: m.blsCode,
+				nutritionDbName: m.nutritionDbName,
+				excluded: m.excluded || false,
+			}));
+	}
+
 	// Display form errors if any
 	$effect(() => {
 		if (form?.error) {
@@ -327,6 +479,34 @@
 		font-size: 1.3rem;
 		color: white;
 	}
+	.fab-save {
+		position: fixed;
+		bottom: 0;
+		right: 0;
+		width: 1rem;
+		height: 1rem;
+		padding: 2rem;
+		margin: 2rem;
+		border-radius: var(--radius-pill);
+		background-color: var(--red);
+		display: grid;
+		justify-content: center;
+		align-content: center;
+		z-index: 100;
+		animation: unset !important;
+	}
+	.fab-save:hover, .fab-save:focus {
+		background-color: var(--nord0) !important;
+	}
+	.fab-save:disabled {
+		opacity: 0.5;
+		cursor: not-allowed;
+	}
+	@media screen and (max-width: 500px) {
+		.fab-save {
+			margin: 1rem;
+		}
+	}
 	.submit_buttons {
 		display: flex;
 		margin-inline: auto;
@@ -336,11 +516,6 @@
 		align-items: center;
 		gap: 2rem;
 	}
-	.submit_buttons p {
-		padding: 0;
-		padding-right: 0.5em;
-		margin: 0;
-	}
 	@media (prefers-color-scheme: dark) {
     :global(:root:not([data-theme="light"])) .title {
 			background-color: var(--nord6-dark);
@@ -381,6 +556,302 @@
 		max-width: 800px;
 		text-align: center;
 	}
+	.nutrition-section {
+		max-width: 1000px;
+		margin: 1.5rem auto;
+	}
+	.nutrition-header {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		margin-bottom: 0.75rem;
+	}
+	.nutrition-header h3 {
+		margin: 0;
+	}
+	.regenerate-btn {
+		background: var(--color-primary);
+		color: var(--color-text-on-primary);
+		border: none;
+		border-radius: var(--radius-pill);
+		padding: 0.4rem 1rem;
+		font-size: 0.85rem;
+		cursor: pointer;
+		transition: opacity var(--transition-fast);
+	}
+	.regenerate-btn:hover {
+		opacity: 0.85;
+	}
+	.regenerate-btn:disabled {
+		opacity: 0.5;
+		cursor: not-allowed;
+	}
+	.nutrition-table-wrapper {
+		background: var(--color-bg-secondary);
+		border-radius: 12px;
+		padding: 1rem;
+		overflow-x: auto;
+	}
+	.nutrition-result-summary {
+		margin: 0 0 0.75rem;
+		font-weight: 600;
+		color: var(--color-text-secondary);
+		font-size: 0.9rem;
+	}
+	.nutrition-result-table {
+		width: 100%;
+		border-collapse: collapse;
+		font-size: 0.85rem;
+	}
+	.nutrition-result-table th,
+	.nutrition-result-table td {
+		text-align: left;
+		padding: 0.4rem 0.6rem;
+		border-bottom: 1px solid var(--color-bg-elevated);
+	}
+	.nutrition-result-table th {
+		color: var(--color-text-secondary);
+		font-weight: 600;
+		font-size: 0.8rem;
+		text-transform: uppercase;
+		letter-spacing: 0.03em;
+	}
+	.unmapped-row {
+		opacity: 0.6;
+	}
+	.search-cell {
+		position: relative;
+	}
+	.search-input {
+		display: inline !important;
+		width: 100%;
+		padding: 0.3rem 0.5rem !important;
+		margin: 0 !important;
+		border: 1px solid var(--color-bg-elevated) !important;
+		border-radius: 6px !important;
+		background: var(--color-bg-primary) !important;
+		color: var(--color-text-primary) !important;
+		font-size: 0.85rem !important;
+		scale: 1 !important;
+	}
+	.search-input:hover,
+	.search-input:focus-visible {
+		scale: 1 !important;
+		border-color: var(--color-primary) !important;
+	}
+	.search-dropdown {
+		position: absolute;
+		top: 100%;
+		left: 0;
+		right: 0;
+		z-index: 10;
+		list-style: none;
+		margin: 2px 0 0;
+		padding: 0;
+		background: var(--color-bg-primary);
+		border: 1px solid var(--color-bg-elevated);
+		border-radius: 8px;
+		max-height: 240px;
+		overflow-y: auto;
+		min-width: 300px;
+		box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
+	}
+	.search-dropdown li button {
+		display: block;
+		width: 100%;
+		text-align: left;
+		padding: 0.4rem 0.6rem;
+		border: none;
+		background: none;
+		color: var(--color-text-primary);
+		font-size: 0.8rem;
+		cursor: pointer;
+	}
+	.search-dropdown li button:hover {
+		background: var(--color-bg-tertiary);
+	}
+	.search-cal {
+		color: var(--color-text-secondary);
+		margin-left: 0.5rem;
+		font-size: 0.75rem;
+	}
+	.source-badge {
+		display: inline-block;
+		font-size: 0.6rem;
+		font-weight: 700;
+		padding: 0.1rem 0.35rem;
+		border-radius: 4px;
+		margin-right: 0.3rem;
+		background: var(--nord10);
+		color: white;
+		vertical-align: middle;
+	}
+	.source-badge.bls {
+		background: var(--nord14);
+		color: var(--nord0);
+	}
+	.source-badge.skip {
+		background: var(--nord11);
+		color: white;
+	}
+	.manual-indicator {
+		display: inline-block;
+		font-size: 0.55rem;
+		font-weight: 700;
+		color: var(--nord13);
+		margin-left: 0.2rem;
+		vertical-align: super;
+	}
+	.excluded-row {
+		opacity: 0.4;
+	}
+	.excluded-row td {
+		text-decoration: line-through;
+	}
+	.excluded-row td:last-child,
+	.excluded-row td:nth-last-child(2),
+	.excluded-row td:nth-last-child(3),
+	.excluded-row td:nth-last-child(4) {
+		text-decoration: none;
+	}
+	.manual-row {
+		border-left: 2px solid var(--nord13);
+	}
+	.excluded-label {
+		font-style: italic;
+		color: var(--nord11);
+		font-size: 0.8rem;
+	}
+	.en-name {
+		color: var(--color-text-secondary);
+		font-size: 0.75rem;
+	}
+	.current-match {
+		display: block;
+		font-size: 0.8rem;
+		margin-bottom: 0.2rem;
+		color: var(--color-text-primary);
+	}
+	.current-match.manual-match {
+		color: var(--nord13);
+	}
+	.search-input.has-match {
+		opacity: 0.5;
+		font-size: 0.75rem !important;
+	}
+	.search-input.has-match:focus {
+		opacity: 1;
+		font-size: 0.85rem !important;
+	}
+	.row-controls {
+		display: flex;
+		align-items: center;
+		gap: 0.5rem;
+		margin-top: 0.3rem;
+	}
+	.row-controls :global(.toggle-wrapper) {
+		font-size: 0.75rem;
+	}
+	.row-controls :global(.toggle-wrapper label) {
+		gap: 0.4rem;
+	}
+	.row-controls :global(.toggle-track),
+	.row-controls :global(input[type="checkbox"]) {
+		width: 32px !important;
+		height: 18px !important;
+	}
+	.row-controls :global(.toggle-track::before),
+	.row-controls :global(input[type="checkbox"]::before) {
+		width: 14px !important;
+		height: 14px !important;
+	}
+	.row-controls :global(.toggle-track.checked::before),
+	.row-controls :global(input[type="checkbox"]:checked::before) {
+		transform: translateX(14px) !important;
+	}
+	.revert-btn {
+		background: none;
+		border: 1px solid var(--color-bg-elevated);
+		border-radius: 4px;
+		color: var(--color-text-secondary);
+		cursor: pointer;
+		padding: 0.15rem 0.4rem;
+		font-size: 0.65rem;
+		font-weight: 600;
+		text-transform: uppercase;
+		letter-spacing: 0.03em;
+		transition: all var(--transition-fast);
+	}
+	.revert-btn:hover {
+		background: var(--color-primary);
+		color: var(--color-text-on-primary);
+		border-color: var(--color-primary);
+	}
+	.skip-btn {
+		background: none;
+		border: 1px solid var(--color-bg-elevated);
+		border-radius: 4px;
+		color: var(--nord11);
+		cursor: pointer;
+		padding: 0.15rem 0.4rem;
+		font-size: 0.8rem;
+		line-height: 1;
+		transition: all var(--transition-fast);
+	}
+	.skip-btn:hover {
+		background: var(--nord11);
+		color: white;
+	}
+	.skip-btn.active {
+		background: var(--nord11);
+		color: white;
+	}
+	.skip-btn.active:hover {
+		background: var(--nord14);
+		color: var(--nord0);
+	}
+	.gpu-input {
+		display: inline !important;
+		width: 4em !important;
+		padding: 0.2rem 0.3rem !important;
+		margin: 0 !important;
+		border: 1px solid var(--color-bg-elevated) !important;
+		border-radius: 4px !important;
+		background: var(--color-bg-primary) !important;
+		color: var(--color-text-primary) !important;
+		font-size: 0.8rem !important;
+		scale: 1 !important;
+		text-align: right;
+	}
+	.gpu-input:hover, .gpu-input:focus-visible {
+		scale: 1 !important;
+	}
+	.section-actions {
+		display: flex;
+		gap: 0.75rem;
+	}
+	.section-btn {
+		padding: 0.75rem 1.5rem;
+		border: none;
+		border-radius: 4px;
+		font-size: 1rem;
+		font-weight: 600;
+		cursor: pointer;
+		transition: all var(--transition-fast);
+		background: var(--color-primary);
+		color: var(--color-text-on-primary);
+	}
+	.section-btn:hover {
+		opacity: 0.85;
+	}
+	.section-btn:disabled {
+		opacity: 0.5;
+		cursor: not-allowed;
+	}
+	.translation-section-trigger {
+		max-width: 1000px;
+		margin: 1.5rem auto;
+	}
 </style>
 
 <svelte:head>
@@ -535,35 +1006,133 @@
 		<input type="hidden" name="addendum" value={addendum} />
 	</div>
 
-	{#if !showTranslationWorkflow}
+	<!-- Nutrition section -->
-		<div class="submit_buttons">
+	<input type="hidden" name="nutritionMappings_json" value={JSON.stringify(nutritionMappings)} />
-			<button
+	<input type="hidden" name="globalOverwrites_json" value={JSON.stringify(getGlobalOverwrites())} />
-				type="button"
+
-				class="action_button"
+	{#if nutritionMappings.length > 0}
-				onclick={prepareSubmit}
+		<div class="nutrition-section">
-				disabled={submitting}
+			<div class="nutrition-header">
-				style="background-color: var(--nord14);"
+				<h3>Nährwerte</h3>
-			>
+				<button type="button" class="regenerate-btn" onclick={generateNutrition} disabled={generatingNutrition || !short_name.trim()}>
-				<p>Speichern & Übersetzung aktualisieren</p>
+					{generatingNutrition ? 'Generiere…' : 'Neu generieren'}
-				<Check fill="white" width="2rem" height="2rem" />
-			</button>
-			{#if translationData}
-				<button
-					type="button"
-					class="action_button"
-					onclick={forceFullRetranslation}
-					disabled={submitting}
-					style="background-color: var(--nord12);"
-				>
-					<p>Komplett neu übersetzen</p>
-					<Check fill="white" width="2rem" height="2rem" />
 				</button>
-			{/if}
+			</div>
+			<div class="nutrition-table-wrapper">
+				<p class="nutrition-result-summary">
+					{nutritionMappings.filter((m) => m.matchMethod !== 'none').length}/{nutritionMappings.length} Zutaten zugeordnet
+				</p>
+				<table class="nutrition-result-table">
+					<thead><tr><th>#</th><th>Zutat</th><th>Quelle</th><th>Treffer / Suche</th><th>Konf.</th><th>g/u</th><th></th></tr></thead>
+					<tbody>
+						{#each nutritionMappings as m, i (mappingKey(m))}
+							{@const key = mappingKey(m)}
+							<tr class:unmapped-row={m.matchMethod === 'none' && !m.excluded} class:excluded-row={m.excluded} class:manual-row={m.manuallyEdited && !m.excluded}>
+								<td>{i + 1}</td>
+								<td>
+									{m.ingredientNameDe || m.ingredientName}
+									{#if m.ingredientName && m.ingredientName !== m.ingredientNameDe}
+										<span class="en-name">({m.ingredientName})</span>
+									{/if}
+								</td>
+								<td>
+									{#if m.excluded}
+										<span class="source-badge skip">SKIP</span>
+									{:else if m.matchMethod !== 'none'}
+										<span class="source-badge" class:bls={m.source === 'bls'}>{(m.source || 'usda').toUpperCase()}</span>
+										{#if m.manuallyEdited}<span class="manual-indicator" title="Manuell zugeordnet">M</span>{/if}
+									{:else}
+										—
+									{/if}
+								</td>
+								<td>
+									<div class="search-cell">
+										{#if m.excluded}
+											<span class="excluded-label">Übersprungen</span>
+										{:else if m.matchMethod !== 'none' && !searchQueries[key]}
+											<span class="current-match" class:manual-match={m.manuallyEdited}>{m.nutritionDbName || '—'}</span>
+										{/if}
+										<input
+											type="text"
+											class="search-input"
+											class:has-match={m.matchMethod !== 'none' && !m.excluded && !searchQueries[key]}
+											placeholder={m.excluded ? 'Suche für neuen Treffer…' : (m.matchMethod !== 'none' ? 'Überschreiben…' : 'BLS/USDA suchen…')}
+											value={searchQueries[key] || ''}
+											oninput={(e) => handleSearchInput(key, e.currentTarget.value)}
+										/>
+										{#if searchResults[key]?.length > 0}
+											<ul class="search-dropdown">
+												{#each searchResults[key] as result (result.id)}
+													<li>
+														<button
+															type="button"
+															onclick={() => assignNutritionEntry(m, result)}
+														>
+															<span class="source-badge" class:bls={result.source === 'bls'}>{result.source.toUpperCase()}</span>
+															{result.name}
+															<span class="search-cal">{Math.round(result.calories)} kcal</span>
+														</button>
+													</li>
+												{/each}
+											</ul>
+										{/if}
+										<div class="row-controls">
+											<Toggle checked={globalToggle[key] ?? false} label="global" onchange={() => { globalToggle[key] = !globalToggle[key]; }} />
+											{#if m.manuallyEdited || m.excluded}
+												<button type="button" class="revert-btn" onclick={() => revertToAuto(m)} title="Zurück auf automatisch">auto</button>
+											{/if}
+										</div>
+									</div>
+								</td>
+								<td>{m.matchConfidence ? (m.matchConfidence * 100).toFixed(0) + '%' : '—'}</td>
+								<td>
+									{#if m.manuallyEdited}
+										<input type="number" class="gpu-input" min="0" step="0.1" bind:value={m.gramsPerUnit} />
+									{:else}
+										{m.gramsPerUnit || '—'}
+									{/if}
+								</td>
+								<td>
+									<button
+										type="button"
+										class="skip-btn"
+										class:active={m.excluded}
+										onclick={() => m.excluded ? revertToAuto(m) : skipIngredient(m)}
+										title={m.excluded ? 'Wieder aktivieren' : 'Überspringen'}
+									>
+										{m.excluded ? '↩' : '✕'}
+									</button>
+								</td>
+							</tr>
+						{/each}
+					</tbody>
+				</table>
+			</div>
+		</div>
+	{:else}
+		<div class="nutrition-section">
+			<h3>Nährwerte</h3>
+			<div class="section-actions">
+				<button type="button" class="section-btn" onclick={generateNutrition} disabled={generatingNutrition || !short_name.trim()}>
+					{generatingNutrition ? 'Generiere…' : 'Generieren'}
+				</button>
+			</div>
+		</div>
+	{/if}
+
+	{#if !translationData && !showTranslationWorkflow}
+		<div class="translation-section-trigger">
+			<h3>Übersetzung</h3>
+			<div class="section-actions">
+				<button type="button" class="section-btn" onclick={openTranslation} disabled={submitting}>
+					Übersetzen
+				</button>
+			</div>
 		</div>
 	{/if}
 </form>
 
-{#if showTranslationWorkflow}
+{#if translationData || showTranslationWorkflow}
 	<div id="translation-section">
 		<TranslationApproval
 			germanData={currentRecipeData}
@@ -574,7 +1143,17 @@
 			onapproved={handleTranslationApproved}
 			onskipped={handleTranslationSkipped}
 			oncancelled={handleTranslationCancelled}
-			onforceFullRetranslation={forceFullRetranslation}
 		/>
 	</div>
 {/if}
+
+<!-- FAB save button -->
+<button
+	type="button"
+	class="fab-save action_button"
+	onclick={saveRecipe}
+	disabled={submitting}
+	aria-label="Rezept speichern"
+>
+	<Check fill="white" width="2rem" height="2rem" />
+</button>

src/routes/api/[recipeLang=recipeLang]/items/[name]/+server.ts

@@ -4,6 +4,7 @@ import { dbConnect } from '$utils/db';
 import { error } from '@sveltejs/kit';
 import type { RecipeModelType, IngredientItem, InstructionItem } from '$types/types';
 import { isEnglish } from '$lib/server/recipeHelpers';
+import { getNutritionEntryByFdcId, getBlsEntryByCode, computeRecipeNutritionTotals } from '$lib/server/nutritionMatcher';
 
 /** Recursively map populated baseRecipeRef to resolvedRecipe field */
 function mapBaseRecipeRefs(items: any[]): any[] {
@@ -22,6 +23,91 @@ function mapBaseRecipeRefs(items: any[]): any[] {
   });
 }
 
+/** Resolve per100g nutrition data into mappings so client doesn't need the full DB */
+function resolveNutritionData(mappings: any[]): any[] {
+  if (!mappings || mappings.length === 0) return [];
+  return mappings.map((m: any) => {
+    if (m.matchMethod === 'none') return m;
+    // BLS source: look up by blsCode
+    if (m.blsCode && m.source === 'bls') {
+      const entry = getBlsEntryByCode(m.blsCode);
+      if (entry) return { ...m, per100g: entry.per100g };
+    }
+    // USDA source: look up by fdcId
+    if (m.fdcId) {
+      const entry = getNutritionEntryByFdcId(m.fdcId);
+      if (entry) return { ...m, per100g: entry.per100g };
+    }
+    return m;
+  });
+}
+
+/** Parse anchor href from ingredient name, return short_name or null */
+function parseAnchorRecipeRef(ingredientName: string): string | null {
+  const match = ingredientName.match(/<a\s+href=["']?([^"' >]+)["']?[^>]*>/i);
+  if (!match) return null;
+  let href = match[1].trim();
+  // Strip query params (e.g., ?multiplier={{multiplier}})
+  href = href.split('?')[0];
+  // Skip external links
+  if (href.startsWith('http') || href.includes('://')) return null;
+  // Strip leading path components like /rezepte/ or ./
+  href = href.replace(/^(\.?\/?rezepte\/|\.\/|\/)/, '');
+  // Skip if contains a dot (file extensions, external domains)
+  if (href.includes('.')) return null;
+  return href || null;
+}
+
+/**
+ * Build nutrition totals for referenced recipes:
+ * 1. Base recipe references (type='reference' with populated baseRecipeRef)
+ * 2. Anchor-tag references in ingredient names (<a href=...>)
+ */
+async function resolveReferencedNutrition(
+  ingredients: any[],
+): Promise<{ shortName: string; name: string; nutrition: Record<string, number>; baseMultiplier: number }[]> {
+  const results: { shortName: string; name: string; nutrition: Record<string, number>; baseMultiplier: number }[] = [];
+  const processedSlugs = new Set<string>();
+
+  for (const section of ingredients) {
+    // Type 1: Base recipe references
+    if (section.type === 'reference' && section.baseRecipeRef) {
+      const ref = section.baseRecipeRef;
+      const slug = ref.short_name;
+      if (processedSlugs.has(slug)) continue;
+      processedSlugs.add(slug);
+
+      if (ref.nutritionMappings?.length > 0) {
+        const mult = section.baseMultiplier || 1;
+        const nutrition = computeRecipeNutritionTotals(ref.ingredients || [], ref.nutritionMappings, 1);
+        results.push({ shortName: slug, name: ref.name, nutrition, baseMultiplier: mult });
+      }
+    }
+
+    // Type 2: Anchor-tag references in ingredient names
+    if (section.list) {
+      for (const item of section.list) {
+        const refSlug = parseAnchorRecipeRef(item.name || '');
+        if (!refSlug || processedSlugs.has(refSlug)) continue;
+        processedSlugs.add(refSlug);
+
+        // Look up the referenced recipe
+        const refRecipe = await Recipe.findOne({ short_name: refSlug })
+          .select('short_name name ingredients nutritionMappings portions')
+          .lean();
+        if (!refRecipe?.nutritionMappings?.length) continue;
+
+        const nutrition = computeRecipeNutritionTotals(
+          refRecipe.ingredients || [], refRecipe.nutritionMappings, 1
+        );
+        results.push({ shortName: refSlug, name: refRecipe.name, nutrition, baseMultiplier: 1 });
+      }
+    }
+  }
+
+  return results;
+}
+
 export const GET: RequestHandler = async ({ params }) => {
   await dbConnect();
   const en = isEnglish(params.recipeLang!);
@@ -34,25 +120,25 @@ export const GET: RequestHandler = async ({ params }) => {
     ? [
         {
           path: 'translations.en.ingredients.baseRecipeRef',
-          select: 'short_name name ingredients instructions translations',
+          select: 'short_name name ingredients instructions translations nutritionMappings portions',
           populate: {
             path: 'ingredients.baseRecipeRef',
-            select: 'short_name name ingredients instructions translations',
+            select: 'short_name name ingredients instructions translations nutritionMappings portions',
             populate: {
               path: 'ingredients.baseRecipeRef',
-              select: 'short_name name ingredients instructions translations'
+              select: 'short_name name ingredients instructions translations nutritionMappings portions'
             }
           }
         },
         {
           path: 'translations.en.instructions.baseRecipeRef',
-          select: 'short_name name ingredients instructions translations',
+          select: 'short_name name ingredients instructions translations nutritionMappings portions',
           populate: {
             path: 'instructions.baseRecipeRef',
-            select: 'short_name name ingredients instructions translations',
+            select: 'short_name name ingredients instructions translations nutritionMappings portions',
             populate: {
               path: 'instructions.baseRecipeRef',
-              select: 'short_name name ingredients instructions translations'
+              select: 'short_name name ingredients instructions translations nutritionMappings portions'
             }
           }
         }
@@ -60,13 +146,13 @@ export const GET: RequestHandler = async ({ params }) => {
     : [
         {
           path: 'ingredients.baseRecipeRef',
-          select: 'short_name name ingredients translations',
+          select: 'short_name name ingredients translations nutritionMappings portions',
           populate: {
             path: 'ingredients.baseRecipeRef',
-            select: 'short_name name ingredients translations',
+            select: 'short_name name ingredients translations nutritionMappings portions',
             populate: {
               path: 'ingredients.baseRecipeRef',
-              select: 'short_name name ingredients translations'
+              select: 'short_name name ingredients translations nutritionMappings portions'
             }
           }
         },
@@ -126,6 +212,7 @@ export const GET: RequestHandler = async ({ params }) => {
       total_time: t.total_time || rawRecipe.total_time || '',
       translationStatus: t.translationStatus,
       germanShortName: rawRecipe.short_name,
+      nutritionMappings: resolveNutritionData(rawRecipe.nutritionMappings || []),
     };
 
     if (recipe.ingredients) {
@@ -135,6 +222,9 @@ export const GET: RequestHandler = async ({ params }) => {
       recipe.instructions = mapBaseRecipeRefs(recipe.instructions as any[]);
     }
 
+    // Resolve nutrition from referenced recipes (base refs + anchor tags)
+    recipe.referencedNutrition = await resolveReferencedNutrition(rawRecipe.ingredients || []);
+
     // Merge English alt/caption with original image paths
     const imagesArray = Array.isArray(rawRecipe.images) ? rawRecipe.images : (rawRecipe.images ? [rawRecipe.images] : []);
     if (imagesArray.length > 0) {
@@ -152,11 +242,14 @@ export const GET: RequestHandler = async ({ params }) => {
 
   // German: pass through with base recipe ref mapping
   let recipe = JSON.parse(JSON.stringify(rawRecipe));
+  recipe.nutritionMappings = resolveNutritionData(recipe.nutritionMappings || []);
   if (recipe.ingredients) {
     recipe.ingredients = mapBaseRecipeRefs(recipe.ingredients);
   }
   if (recipe.instructions) {
     recipe.instructions = mapBaseRecipeRefs(recipe.instructions);
   }
+  // Resolve nutrition from referenced recipes (base refs + anchor tags)
+  recipe.referencedNutrition = await resolveReferencedNutrition(rawRecipe.ingredients || []);
   return json(recipe);
 };

src/routes/api/[recipeLang=recipeLang]/nutrition/[name]/+server.ts

@@ -0,0 +1,80 @@
+import { json, error, type RequestHandler } from '@sveltejs/kit';
+import { Recipe } from '$models/Recipe';
+import { dbConnect } from '$utils/db';
+import { isEnglish } from '$lib/server/recipeHelpers';
+import { getNutritionEntryByFdcId, getBlsEntryByCode, invalidateOverwriteCache } from '$lib/server/nutritionMatcher';
+import { NutritionOverwrite } from '$models/NutritionOverwrite';
+import { canonicalizeUnit, resolveGramsPerUnit } from '$lib/data/unitConversions';
+import type { NutritionMapping } from '$types/types';
+
+/** PATCH: Update individual nutrition mappings (manual edit UI) */
+export const PATCH: RequestHandler = async ({ params, request, locals }) => {
+	await locals.auth();
+	await dbConnect();
+
+	const en = isEnglish(params.recipeLang!);
+	const query = en
+		? { 'translations.en.short_name': params.name }
+		: { short_name: params.name };
+
+	const recipe = await Recipe.findOne(query);
+	if (!recipe) throw error(404, 'Recipe not found');
+
+	const updates: (Partial<NutritionMapping> & { global?: boolean; ingredientNameDe?: string })[] = await request.json();
+	const mappings: any[] = recipe.nutritionMappings || [];
+
+	for (const update of updates) {
+		// If global flag is set, also create/update a NutritionOverwrite
+		if (update.global && update.ingredientNameDe) {
+			const owData: Record<string, any> = {
+				ingredientNameDe: update.ingredientNameDe.toLowerCase().trim(),
+				source: update.excluded ? 'skip' : (update.source || 'usda'),
+				excluded: update.excluded || false,
+			};
+			if (update.ingredientName) owData.ingredientNameEn = update.ingredientName;
+			if (update.fdcId) owData.fdcId = update.fdcId;
+			if (update.blsCode) owData.blsCode = update.blsCode;
+			if (update.nutritionDbName) owData.nutritionDbName = update.nutritionDbName;
+
+			await NutritionOverwrite.findOneAndUpdate(
+				{ ingredientNameDe: owData.ingredientNameDe },
+				owData,
+				{ upsert: true, runValidators: true },
+			);
+			invalidateOverwriteCache();
+		}
+
+		// Resolve gramsPerUnit from source DB portions if not provided
+		if (!update.gramsPerUnit && !update.excluded) {
+			if (update.blsCode && update.source === 'bls') {
+				update.gramsPerUnit = 1;
+				update.unitConversionSource = update.unitConversionSource || 'manual';
+			} else if (update.fdcId) {
+				const entry = getNutritionEntryByFdcId(update.fdcId);
+				if (entry) {
+					const resolved = resolveGramsPerUnit('g', entry.portions);
+					update.gramsPerUnit = resolved.grams;
+					update.unitConversionSource = resolved.source;
+				}
+			}
+		}
+
+		// Clean up non-schema fields before saving
+		delete update.global;
+		delete update.ingredientNameDe;
+
+		const idx = mappings.findIndex(
+			(m: any) => m.sectionIndex === update.sectionIndex && m.ingredientIndex === update.ingredientIndex
+		);
+		if (idx >= 0) {
+			Object.assign(mappings[idx], update, { manuallyEdited: true });
+		} else {
+			mappings.push({ ...update, manuallyEdited: true });
+		}
+	}
+
+	recipe.nutritionMappings = mappings;
+	await recipe.save();
+
+	return json({ updated: updates.length });
+};

src/routes/api/[recipeLang=recipeLang]/nutrition/generate-all/+server.ts

@@ -0,0 +1,51 @@
+import { json, type RequestHandler } from '@sveltejs/kit';
+import { Recipe } from '$models/Recipe';
+import { dbConnect } from '$utils/db';
+import { generateNutritionMappings } from '$lib/server/nutritionMatcher';
+
+export const POST: RequestHandler = async ({ locals }) => {
+	await locals.auth();
+	await dbConnect();
+
+	const recipes = await Recipe.find({}).lean();
+	const results: { name: string; mapped: number; total: number }[] = [];
+
+	for (const recipe of recipes) {
+		const ingredients = recipe.ingredients || [];
+		const translatedIngredients = recipe.translations?.en?.ingredients;
+
+		// Preserve manually edited mappings
+		const existingMappings = recipe.nutritionMappings || [];
+		const manualMappings = new Map(
+			existingMappings
+				.filter((m: any) => m.manuallyEdited)
+				.map((m: any) => [`${m.sectionIndex}-${m.ingredientIndex}`, m])
+		);
+
+		const newMappings = await generateNutritionMappings(ingredients, translatedIngredients);
+
+		const finalMappings = newMappings.map(m => {
+			const key = `${m.sectionIndex}-${m.ingredientIndex}`;
+			return manualMappings.get(key) || m;
+		});
+
+		await Recipe.updateOne(
+			{ _id: recipe._id },
+			{ $set: { nutritionMappings: finalMappings } }
+		);
+
+		const mapped = finalMappings.filter(m => m.matchMethod !== 'none').length;
+		results.push({ name: recipe.name, mapped, total: finalMappings.length });
+	}
+
+	const totalMapped = results.reduce((sum, r) => sum + r.mapped, 0);
+	const totalIngredients = results.reduce((sum, r) => sum + r.total, 0);
+
+	return json({
+		recipes: results.length,
+		totalIngredients,
+		totalMapped,
+		coverage: totalIngredients ? (totalMapped / totalIngredients * 100).toFixed(1) + '%' : '0%',
+		details: results,
+	});
+};

src/routes/api/[recipeLang=recipeLang]/nutrition/generate/[name]/+server.ts

@@ -0,0 +1,50 @@
+import { json, error, type RequestHandler } from '@sveltejs/kit';
+import { Recipe } from '$models/Recipe';
+import { dbConnect } from '$utils/db';
+import { isEnglish } from '$lib/server/recipeHelpers';
+import { generateNutritionMappings } from '$lib/server/nutritionMatcher';
+
+export const POST: RequestHandler = async ({ params, locals, url }) => {
+	await locals.auth();
+	await dbConnect();
+
+	const en = isEnglish(params.recipeLang!);
+	const query = en
+		? { 'translations.en.short_name': params.name }
+		: { short_name: params.name };
+
+	const recipe = await Recipe.findOne(query).lean();
+	if (!recipe) throw error(404, 'Recipe not found');
+
+	const ingredients = recipe.ingredients || [];
+	const translatedIngredients = recipe.translations?.en?.ingredients;
+
+	const newMappings = await generateNutritionMappings(ingredients, translatedIngredients);
+	const preview = url.searchParams.get('preview') === 'true';
+
+	// In preview mode, return pure auto-matches without saving (client merges manual edits)
+	if (preview) {
+		return json({ mappings: newMappings, count: newMappings.length });
+	}
+
+	// Preserve manually edited mappings
+	const existingMappings = recipe.nutritionMappings || [];
+	const manualMappings = new Map(
+		existingMappings
+			.filter((m: any) => m.manuallyEdited)
+			.map((m: any) => [`${m.sectionIndex}-${m.ingredientIndex}`, m])
+	);
+
+	// Merge: keep manual edits, use new auto-matches for the rest
+	const finalMappings = newMappings.map(m => {
+		const key = `${m.sectionIndex}-${m.ingredientIndex}`;
+		return manualMappings.get(key) || m;
+	});
+
+	await Recipe.updateOne(
+		{ _id: recipe._id },
+		{ $set: { nutritionMappings: finalMappings } }
+	);
+
+	return json({ mappings: finalMappings, count: finalMappings.length });
+};

src/routes/api/nutrition/overwrites/+server.ts

@@ -0,0 +1,60 @@
+import { json, error, type RequestHandler } from '@sveltejs/kit';
+import { dbConnect } from '$utils/db';
+import { NutritionOverwrite } from '$models/NutritionOverwrite';
+import { invalidateOverwriteCache } from '$lib/server/nutritionMatcher';
+
+/** GET: List all global nutrition overwrites */
+export const GET: RequestHandler = async ({ locals }) => {
+	await locals.auth();
+	await dbConnect();
+	const overwrites = await NutritionOverwrite.find({}).sort({ ingredientNameDe: 1 }).lean();
+	return json(overwrites);
+};
+
+/** POST: Create a new global nutrition overwrite */
+export const POST: RequestHandler = async ({ request, locals }) => {
+	await locals.auth();
+	await dbConnect();
+
+	const body = await request.json();
+	if (!body.ingredientNameDe || !body.source) {
+		throw error(400, 'ingredientNameDe and source are required');
+	}
+
+	const data: Record<string, any> = {
+		ingredientNameDe: body.ingredientNameDe.toLowerCase().trim(),
+		source: body.source,
+	};
+	if (body.ingredientNameEn) data.ingredientNameEn = body.ingredientNameEn;
+	if (body.fdcId) data.fdcId = body.fdcId;
+	if (body.blsCode) data.blsCode = body.blsCode;
+	if (body.nutritionDbName) data.nutritionDbName = body.nutritionDbName;
+	if (body.source === 'skip') data.excluded = true;
+
+	const overwrite = await NutritionOverwrite.findOneAndUpdate(
+		{ ingredientNameDe: data.ingredientNameDe },
+		data,
+		{ upsert: true, new: true, runValidators: true },
+	).lean();
+
+	invalidateOverwriteCache();
+	return json(overwrite, { status: 201 });
+};
+
+/** DELETE: Remove a global nutrition overwrite by ingredientNameDe */
+export const DELETE: RequestHandler = async ({ request, locals }) => {
+	await locals.auth();
+	await dbConnect();
+
+	const body = await request.json();
+	if (!body.ingredientNameDe) {
+		throw error(400, 'ingredientNameDe is required');
+	}
+
+	const result = await NutritionOverwrite.deleteOne({
+		ingredientNameDe: body.ingredientNameDe.toLowerCase().trim(),
+	});
+
+	invalidateOverwriteCache();
+	return json({ deleted: result.deletedCount });
+};

src/routes/api/nutrition/search/+server.ts

@@ -0,0 +1,48 @@
+import { json, type RequestHandler } from '@sveltejs/kit';
+import { NUTRITION_DB } from '$lib/data/nutritionDb';
+import { BLS_DB } from '$lib/data/blsDb';
+import { fuzzyScore } from '$lib/js/fuzzy';
+
+/** GET: Search BLS + USDA nutrition databases by fuzzy name match */
+export const GET: RequestHandler = async ({ url }) => {
+	const q = (url.searchParams.get('q') || '').toLowerCase().trim();
+	if (q.length < 2) return json([]);
+
+	const scored: { source: 'bls' | 'usda'; id: string; name: string; category: string; calories: number; score: number }[] = [];
+
+	// Search BLS (primary)
+	for (const entry of BLS_DB) {
+		const scoreDe = fuzzyScore(q, entry.nameDe.toLowerCase());
+		const scoreEn = entry.nameEn ? fuzzyScore(q, entry.nameEn.toLowerCase()) : 0;
+		const best = Math.max(scoreDe, scoreEn);
+		if (best > 0) {
+			scored.push({
+				source: 'bls',
+				id: entry.blsCode,
+				name: `${entry.nameDe}${entry.nameEn ? ` (${entry.nameEn})` : ''}`,
+				category: entry.category,
+				calories: entry.per100g.calories,
+				score: best,
+			});
+		}
+	}
+
+	// Search USDA
+	for (const entry of NUTRITION_DB) {
+		const s = fuzzyScore(q, entry.name.toLowerCase());
+		if (s > 0) {
+			scored.push({
+				source: 'usda',
+				id: String(entry.fdcId),
+				name: entry.name,
+				category: entry.category,
+				calories: entry.per100g.calories,
+				score: s,
+			});
+		}
+	}
+
+	// Sort by score descending, return top 30 (without score field)
+	scored.sort((a, b) => b.score - a.score);
+	return json(scored.slice(0, 30).map(({ score, ...rest }) => rest));
+};

src/types/types.ts

@@ -1,3 +1,40 @@
+// Nutrition per-100g data shape (shared by BLS and USDA sources)
+export type NutritionPer100g = {
+  calories: number; protein: number; fat: number; saturatedFat: number;
+  carbs: number; fiber: number; sugars: number;
+  calcium: number; iron: number; magnesium: number; phosphorus: number;
+  potassium: number; sodium: number; zinc: number;
+  vitaminA: number; vitaminC: number; vitaminD: number; vitaminE: number;
+  vitaminK: number; thiamin: number; riboflavin: number; niacin: number;
+  vitaminB6: number; vitaminB12: number; folate: number; cholesterol: number;
+  // Amino acids (g/100g) — available from BLS, partially from USDA
+  isoleucine?: number; leucine?: number; lysine?: number; methionine?: number;
+  phenylalanine?: number; threonine?: number; tryptophan?: number; valine?: number;
+  histidine?: number; alanine?: number; arginine?: number; asparticAcid?: number;
+  cysteine?: number; glutamicAcid?: number; glycine?: number; proline?: number;
+  serine?: number; tyrosine?: number;
+};
+
+// Nutrition mapping for calorie/macro tracking per ingredient
+export type NutritionMapping = {
+  sectionIndex: number;
+  ingredientIndex: number;
+  ingredientName?: string;
+  ingredientNameDe?: string;
+  source?: 'bls' | 'usda' | 'manual';
+  fdcId?: number;
+  blsCode?: string;
+  nutritionDbName?: string;
+  matchConfidence?: number;
+  matchMethod: 'exact' | 'embedding' | 'manual' | 'none';
+  gramsPerUnit?: number;
+  defaultAmountUsed?: boolean;
+  unitConversionSource: 'direct' | 'density' | 'usda_portion' | 'estimate' | 'manual' | 'none';
+  manuallyEdited: boolean;
+  excluded: boolean;
+  per100g?: NutritionPer100g;
+};
+
 // Translation status enum
 export type TranslationStatus = 'pending' | 'approved' | 'needs_update';
 
@@ -163,6 +200,7 @@ export type RecipeModelType = {
   addendum?: string
   note?: string;
   isBaseRecipe?: boolean;
+  nutritionMappings?: NutritionMapping[];
   translations?: {
     en?: TranslatedRecipeType;
   };