add ca service

bin/services/ca/Gemfile

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+source "https://rubygems.org"
+
+ruby ">= 3.0"
+gem "roda"
+gem "puma" 
+gem "rackup" 

bin/services/ca/Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    nio4r (2.7.4)
+    puma (6.6.1)
+      nio4r (~> 2.0)
+    rack (3.2.0)
+    rackup (2.2.1)
+      rack (>= 3)
+    roda (3.95.0)
+      rack
+
+PLATFORMS
+  arm64-darwin-24
+  ruby
+
+DEPENDENCIES
+  puma
+  rackup
+  roda
+
+RUBY VERSION
+   ruby 3.4.5p51
+
+BUNDLED WITH
+   2.6.9

bin/services/ca/app.rb

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+require "roda"
+
+class App < Roda
+  # automatically sets application/json and encodes Ruby objects
+  plugin :json
+
+  route do |r|
+    r.get "hello" do
+      { message: "world" }
+    end
+  end
+end

bin/services/ca/config.ru

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+require_relative "app"
+run App.freeze.app

bin/services/ca/readme.md

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+
+bundle exec rackup -p 9292 -o 0.0.0.0
+
+
+
+RACK_ENV=production bundle exec rackup -p 8080 -o 0.0.0.0
+
+
+curl http://0.0.0.0:9292/hello --verbose