Add conflict resolution diff UI and app branding

apps/server/internal/markdown/renderer.go

@@ -53,7 +53,16 @@ func NewRenderer() *Renderer {
 }
 
 func (r *Renderer) Render(content []byte) (Result, error) {
-	title := extractTitle(string(content))
+	title, titleFromHeading := extractTitle(string(content), "")
+	return r.renderWithTitle(content, title, titleFromHeading)
+}
+
+func (r *Renderer) RenderPath(content []byte, path string) (Result, error) {
+	title, titleFromHeading := extractTitle(string(content), path)
+	return r.renderWithTitle(content, title, titleFromHeading)
+}
+
+func (r *Renderer) renderWithTitle(content []byte, title string, titleFromHeading bool) (Result, error) {
 	tags := extractTags(string(content))
 	prepared := preprocess(string(content))
 
@@ -62,7 +71,10 @@ func (r *Renderer) Render(content []byte) (Result, error) {
 		return Result{}, fmt.Errorf("render markdown: %w", err)
 	}
 
-	html := firstH1Pattern.ReplaceAllString(output.String(), "")
+	html := output.String()
+	if titleFromHeading {
+		html = firstH1Pattern.ReplaceAllString(html, "")
+	}
 
 	return Result{
 		HTML:  template.HTML(html),
@@ -123,13 +135,14 @@ func normalizeAdmonition(line string) string {
 	}
 }
 
-func extractTitle(content string) string {
+func extractTitle(content string, path string) (string, bool) {
 	for _, line := range strings.Split(content, "\n") {
-		if strings.HasPrefix(line, "# ") {
-			return strings.TrimSpace(strings.TrimPrefix(line, "# "))
+		trimmed := strings.TrimSpace(line)
+		if strings.HasPrefix(trimmed, "# ") {
+			return strings.TrimSpace(strings.TrimPrefix(trimmed, "# ")), true
 		}
 	}
-	return "Untitled"
+	return titleFromPath(path), false
 }
 
 func extractTags(content string) []string {
@@ -169,3 +182,35 @@ func slugify(value string) string {
 	}
 	return strings.Trim(builder.String(), "-")
 }
+
+func titleFromPath(path string) string {
+	path = strings.Trim(path, "/")
+	path = strings.TrimSuffix(path, ".md")
+	if path == "" {
+		return "Home"
+	}
+
+	base := path
+	if strings.HasSuffix(base, "/index") {
+		base = strings.TrimSuffix(base, "/index")
+	}
+	if base == "index" {
+		return "Home"
+	}
+	if idx := strings.LastIndex(base, "/"); idx >= 0 {
+		base = base[idx+1:]
+	}
+	base = strings.ReplaceAll(base, "-", " ")
+	base = strings.ReplaceAll(base, "_", " ")
+	parts := strings.Fields(base)
+	for i, part := range parts {
+		if part == strings.ToUpper(part) {
+			continue
+		}
+		parts[i] = strings.ToUpper(part[:1]) + strings.ToLower(part[1:])
+	}
+	if len(parts) == 0 {
+		return "Home"
+	}
+	return strings.Join(parts, " ")
+}