fix: remove duplicate chapter title h1, drop nav arrow, enlarge hamburger

scraper/internal/server/ui.go

@@ -1896,7 +1896,7 @@ const chapterTmpl = `
        hx-swap="innerHTML"
        title="Back to chapter list"
        aria-label="Back to chapter list"
-       class="flex-shrink-0 px-2 py-1.5 rounded-lg text-zinc-400 hover:text-amber-400 transition-colors text-base leading-none no-underline">
+       class="flex-shrink-0 px-2 py-1.5 rounded-lg text-zinc-400 hover:text-amber-400 transition-colors text-xl leading-none no-underline">
       ☰
     </a>
 
@@ -1909,7 +1909,6 @@ const chapterTmpl = `
             title="Jump to chapter"
             class="flex-1 min-w-0 flex items-center justify-center gap-1.5 overflow-hidden bg-transparent border-none cursor-pointer py-1 px-1">
       <span class="overflow-hidden text-ellipsis whitespace-nowrap text-[0.8125rem] text-zinc-400 max-w-full">{{.Title}}</span>
-      <span class="flex-shrink-0 text-[0.625rem] text-zinc-600" aria-hidden="true">&#9660;</span>
     </button>
 
   </div>
@@ -2801,8 +2800,12 @@ func (s *Server) handleChapter(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Strip the first heading line so it isn't rendered as a duplicate <h1>
+	// inside the article (the template already renders an explicit <h1>).
+	rawForHTML := stripFirstHeadingLine(raw)
+
 	var htmlBuf bytes.Buffer
-	if err := md.Convert([]byte(raw), &htmlBuf); err != nil {
+	if err := md.Convert([]byte(rawForHTML), &htmlBuf); err != nil {
 		http.Error(w, "markdown render error: "+err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -2898,6 +2901,28 @@ func adjacentChapters(chapters []writer.ChapterInfo, n int) (prev, next int) {
 	return
 }
 
+// stripFirstHeadingLine removes the first non-empty line if it is a markdown
+// heading (starts with one or more "#"). This prevents the heading from being
+// rendered as a duplicate <h1> inside the article when the template already
+// renders an explicit title above the article.
+func stripFirstHeadingLine(src string) string {
+	lines := strings.SplitN(src, "\n", -1)
+	for i, line := range lines {
+		trimmed := strings.TrimSpace(line)
+		if trimmed == "" {
+			continue
+		}
+		if strings.HasPrefix(trimmed, "#") {
+			// Remove this line and return the rest.
+			rest := strings.Join(append(lines[:i], lines[i+1:]...), "\n")
+			return strings.TrimLeft(rest, "\n")
+		}
+		// First non-empty line is not a heading — nothing to strip.
+		break
+	}
+	return src
+}
+
 // firstHeading returns the text of the first non-empty line, stripping a
 // leading "# " markdown heading marker. Falls back to fallback.
 func firstHeading(md, fallback string) string {