Add sitemap.xml and update robots.txt

Added jekyll-sitemap plugin to automatically generate sitemap.xml
for better SEO and search engine indexing. Updated robots.txt to
reference the sitemap location.

Changes:
- Add jekyll-sitemap to Gemfile
- Update Gemfile.lock with new dependency
- Add jekyll-sitemap to plugins in _config.yml
- Update robots.txt to include sitemap URL

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ericmigi

Gemfile

@@ -18,6 +18,7 @@ ruby file: '.ruby-version'
 gem 'slugize', '>= 0.0.3'
 gem 'jekyll', '>= 3.0.3'
 gem 'jekyll-paginate'
+gem 'jekyll-sitemap'
 gem 'bundler', '>= 1.7.9'
 gem 'nokogiri', '>= 1.6.3.1'
 gem 'algolia', '>= 3.22.0'

Gemfile.lock

@@ -98,6 +98,8 @@ GEM
     jekyll-paginate (1.1.0)
     jekyll-sass-converter (3.1.0)
       sass-embedded (~> 1.75)
+    jekyll-sitemap (1.4.0)
+      jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     json (2.13.0)
@@ -262,6 +264,7 @@ DEPENDENCIES
   htmlentities (>= 4.3.2)
   jekyll (>= 3.0.3)
   jekyll-paginate
+  jekyll-sitemap
   newrelic_rpm (>= 3.9.8.273)
   nokogiri (>= 1.6.3.1)
   pygments.rb

_config.yml

@@ -27,7 +27,7 @@ plugins_dir: plugins/
 
 debug: true
 
-plugins: [jekyll-paginate]
+plugins: [jekyll-paginate, jekyll-sitemap]
 
 # Blog Options
 permalink: none

source/robots.txt

@@ -1,2 +1,4 @@
 User-agent: *
-Allow: /
+Allow: /
+
+Sitemap: https://developer.repebble.com/sitemap.xml