Add conflict resolution diff UI and app branding

apps/server/internal/markdown/renderer_test.go

@@ -20,4 +20,34 @@ func TestRenderRewritesWikiLinksAndTags(t *testing.T) {
 	if len(result.Tags) != 2 || result.Tags[0] != "alpha" || result.Tags[1] != "beta" {
 		t.Fatalf("unexpected tags: %#v", result.Tags)
 	}
+
+	if strings.Contains(string(result.HTML), "<h1") {
+		t.Fatalf("expected first h1 to be removed from body html, got %s", result.HTML)
+	}
+}
+
+func TestRenderPathFallsBackToCleanedFileName(t *testing.T) {
+	renderer := NewRenderer()
+
+	result, err := renderer.RenderPath([]byte("Body only\n"), "guide/api-reference.md")
+	if err != nil {
+		t.Fatalf("RenderPath() error = %v", err)
+	}
+
+	if result.Title != "Api Reference" {
+		t.Fatalf("Title = %q, want Api Reference", result.Title)
+	}
+}
+
+func TestRenderPathUsesFolderNameForIndexFiles(t *testing.T) {
+	renderer := NewRenderer()
+
+	result, err := renderer.RenderPath([]byte("Body only\n"), "guide/index.md")
+	if err != nil {
+		t.Fatalf("RenderPath() error = %v", err)
+	}
+
+	if result.Title != "Guide" {
+		t.Fatalf("Title = %q, want Guide", result.Title)
+	}
 }