Add robots/sitemap.

Makefile

@@ -256,6 +256,7 @@ installwww: www
 	mkdir -p $(PREFIX)
 	install -m 0444 $(IMAGES) $(GENHTMLS) $(BUILT) $(CSSS) $(PAGES) $(PREFIX)
 	install -m 0444 icons/*.{png,ico,xml,json,svg} $(PREFIX)
+	install -m 0444 robots.txt sitemap.xml $(PREFIX)
 
 clean:
 	rm -f $(PAGES) $(GENS) kwebapp.db.c kwebapp.db.h

robots.txt

@@ -0,0 +1,3 @@
+Sitemap: https://learnbchs.org/sitemap.xml
+User-agent: *
+Disallow: /report/

sitemap.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" 
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+ xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
+	<url><loc>https://learnbchs.org/index.html</loc></url>
+	<url><loc>https://learnbchs.org/auditing.html</loc></url>
+	<url><loc>https://learnbchs.org/easy.html</loc></url>
+	<url><loc>https://learnbchs.org/index.html</loc></url>
+	<url><loc>https://learnbchs.org/json.html</loc></url>
+	<url><loc>https://learnbchs.org/ksql.html</loc></url>
+	<url><loc>https://learnbchs.org/kwebapp.html</loc></url>
+	<url><loc>https://learnbchs.org/pledge.html</loc></url>
+	<url><loc>https://learnbchs.org/rbac.html</loc></url>
+	<url><loc>https://learnbchs.org/tools.html</loc></url>
+	<url><loc>https://learnbchs.org/atom.xml</loc></url>
+</urlset>