[FA-misc] Fixes file caching

FictionArchive.Service.FileService/Controllers/S3ProxyController.cs

@@ -35,8 +35,16 @@ namespace FictionArchive.Service.FileService.Controllers
                     BucketName = _s3Configuration.Bucket,
                     Key = decodedPath
                 });
-            
-                return new FileStreamResult(s3Response.ResponseStream, s3Response.Headers.ContentType);
+                
+                Response.Headers.CacheControl = "public, max-age=604800"; // 7 days
+                Response.Headers.LastModified = s3Response.LastModified?.ToString("R");
+
+                if (!string.IsNullOrEmpty(s3Response.ETag))
+                {
+                    Response.Headers.ETag = s3Response.ETag;
+                }
+
+                return File(s3Response.ResponseStream, s3Response.Headers.ContentType);
             }
             catch (AmazonS3Exception e)
             {

fictionarchive-web-astro/src/lib/components/ChapterReaderPage.svelte

@@ -155,10 +155,9 @@
 		<Card>
 			<CardContent class="px-6 py-8 md:px-12">
 				<article
-					class="prose prose-lg dark:prose-invert mx-auto max-w-none whitespace-pre-line
-                    prose-p:text-foreground prose-p:mb-4 prose-p:leading-relaxed
+					class="prose prose-lg dark:prose-invert mx-auto max-w-none
                     prose-headings:text-foreground
-                    first:prose-p:mt-0 last:prose-p:mb-0"
+                    [&>p]:text-foreground [&>p]:mb-6 [&>p]:leading-relaxed"
 				>
 					{@html sanitizedBody}
 				</article>

fictionarchive-web-astro/src/lib/utils/sanitizeChapter.ts

@@ -1,12 +1,42 @@
 import DOMPurify from 'isomorphic-dompurify';
 
+/**
+ * Splits plain text into paragraphs based on newlines.
+ * Double newlines create new paragraphs, single newlines become <br>.
+ * If the content already contains HTML block elements, returns as-is.
+ */
+function wrapInParagraphs(text: string): string {
+	// Check if content already has block-level HTML elements
+	const hasBlockElements = /<(p|div|h[1-6]|ul|ol|blockquote|pre|table|hr)[>\s]/i.test(text);
+	if (hasBlockElements) {
+		return text;
+	}
+
+	// Split on double newlines (paragraph breaks)
+	const paragraphs = text.split(/\n\s*\n/);
+
+	return paragraphs
+		.map((para) => {
+			const trimmed = para.trim();
+			if (!trimmed) return '';
+			// Convert single newlines to <br> within paragraphs
+			const withBreaks = trimmed.replace(/\n/g, '<br>');
+			return `<p>${withBreaks}</p>`;
+		})
+		.filter(Boolean)
+		.join('\n');
+}
+
 /**
  * Sanitizes chapter HTML content with extended allowed tags.
  * More permissive than the description sanitizer to support
  * formatted novel content including headings, lists, and images.
+ * Also wraps plain text in paragraph tags for better browser translate support.
  */
 export function sanitizeChapterHtml(html: string): string {
-	return DOMPurify.sanitize(html, {
+	// First wrap in paragraphs if needed, then sanitize
+	const wrapped = wrapInParagraphs(html);
+	return DOMPurify.sanitize(wrapped, {
 		ALLOWED_TAGS: [
 			// Basic formatting
 			'b',