Update runner status descriptions

This change updates the runner status descriptions in the GraphQL API
to make them more explicit.

Changelog: other

app/graphql/types/ci/runner_status_enum.rb

@@ -6,8 +6,21 @@ module Types
       graphql_name 'CiRunnerStatus'
 
       ::Ci::Runner::AVAILABLE_STATUSES.each do |status|
+        description = case status
+                      when 'active'
+                        "A runner that is not paused."
+                      when 'online'
+                        "A runner that contacted this instance within the last #{::Ci::Runner::ONLINE_CONTACT_TIMEOUT.inspect}."
+                      when 'offline'
+                        "A runner that has not contacted this instance within the last #{::Ci::Runner::ONLINE_CONTACT_TIMEOUT.inspect}."
+                      when 'not_connected'
+                        "A runner that has never contacted this instance."
+                      else
+                        "A runner that is #{status.to_s.tr('_', ' ')}."
+                      end
+
         value status.to_s.upcase,
-              description: "A runner that is #{status.to_s.tr('_', ' ')}.",
+              description: description,
               value: status.to_sym
       end
     end

doc/api/graphql/reference/index.md

@@ -15382,10 +15382,10 @@ Values for sorting runners.
 
 | Value | Description |
 | ----- | ----------- |
-| <a id="cirunnerstatusactive"></a>`ACTIVE` | A runner that is active. |
-| <a id="cirunnerstatusnot_connected"></a>`NOT_CONNECTED` | A runner that is not connected. |
-| <a id="cirunnerstatusoffline"></a>`OFFLINE` | A runner that is offline. |
-| <a id="cirunnerstatusonline"></a>`ONLINE` | A runner that is online. |
+| <a id="cirunnerstatusactive"></a>`ACTIVE` | A runner that is not paused. |
+| <a id="cirunnerstatusnot_connected"></a>`NOT_CONNECTED` | A runner that has never contacted this instance. |
+| <a id="cirunnerstatusoffline"></a>`OFFLINE` | A runner that has not contacted this instance within the last 2 hours. |
+| <a id="cirunnerstatusonline"></a>`ONLINE` | A runner that contacted this instance within the last 2 hours. |
 | <a id="cirunnerstatuspaused"></a>`PAUSED` | A runner that is paused. |
 
 ### `CiRunnerType`