Nutriments are now iterable

Sources/OpenFoodFactsSDK/Schemas/Nutriments.swift

@@ -2,7 +2,7 @@ import Foundation
 import Units
 
 @dynamicMemberLookup
-public struct Nutriments: Codable, Sendable {
+public struct Nutriments: Codable, Sendable, Sequence {
 	// We separate values (Doubles) and units (Strings) for efficient, thread-safe storage
 	private let values: [String: Double]
 	private let units: [String: String]
@@ -49,6 +49,43 @@ public struct Nutriments: Codable, Sendable {
 		let kebabName = member.camelCaseToKebabCase()
 		return Nutrient(name: kebabName, values: values, units: units)
 	}
+
+	// MARK: - Sequence Conformance
+	// Allows: nutriments.forEach { nutrient in ... }
+	public func makeIterator() -> AnyIterator<Nutrient> {
+		// 1. Collect all keys from values and units
+		let allKeys = Set(values.keys).union(units.keys)
+
+		// 2. Extract unique base names (e.g., "energy-kcal_100g" -> "energy-kcal")
+		let baseNames = allKeys.compactMap { key -> String? in
+			// Filter out keys that are not nutrient properties
+			guard !key.isEmpty else { return nil }
+
+			// Remove common suffixes to find the "root" nutrient name
+			let suffixes = [
+				"_100g", "_serving", "_unit", "_value", "_prepared", "_label",
+			]
+			var name = key
+
+			// Sort suffixes by length (descending) to avoid partial matches
+			for suffix in suffixes {
+				if let range = name.range(of: suffix) {
+					name.removeSubrange(range)
+				}
+			}
+			return name
+		}
+
+		// 3. Create a unique sorted list
+		let uniqueNames = Set(baseNames).sorted()
+		var iterator = uniqueNames.makeIterator()
+
+		// 4. Return an iterator that produces `Nutrient` views
+		return AnyIterator {
+			guard let name = iterator.next() else { return nil }
+			return Nutrient(name: name, values: self.values, units: self.units)
+		}
+	}
 }
 
 // MARK: - Nutrient View