fix HTML placeholder restoration in parallel chunk translation

src/translation.js

@@ -508,10 +508,18 @@ export async function translateHTML(htmlContent, targetLanguage, sourceUrl = nul
 		const chunks = await splitHTMLIntoChunks(processedContent, availableTokens, getSelectedModel());
 		console.log(`Split into ${chunks.length} chunks for parallel translation`);
 		
-		// Translate all chunks in parallel for much faster processing
+		// Apply HTML preservation to each chunk individually before translation
 		const translationPromises = chunks.map((chunk, index) => {
 			console.log(`Queued chunk ${index + 1}/${chunks.length} for translation`);
-			return translateText(chunk, targetLanguage);
+			
+			// Each chunk gets its own preservation/restoration cycle
+			const { preservedText, preservations } = preserveSpecialContent(chunk);
+			
+			// Translate the preserved chunk
+			return translateText(preservedText, targetLanguage).then(translatedChunk => {
+				// Restore special content for this chunk
+				return restoreSpecialContent(translatedChunk, preservations);
+			});
 		});
 		
 		// Wait for all translations to complete