Rename sleep/wake to freeze/unfreeze across all 42 implementations

API endpoint changes:
- /services/{id}/sleep → /services/{id}/freeze
- /services/{id}/wake → /services/{id}/unfreeze

CLI flag changes:
- --sleep → --freeze
- --wake → --unfreeze

Message changes:
- 'Service sleeping' → 'Service frozen'
- 'Service waking' → 'Service unfreezing'

un.tcl

@@ -830,14 +830,14 @@ proc cmd_service {args} {
     }
 
     if {$sleep_id ne ""} {
-        api_request "/services/$sleep_id/sleep" "POST" {} $public_key $secret_key
-        puts "${::GREEN}Service sleeping: $sleep_id${::RESET}"
+        api_request "/services/$sleep_id/freeze" "POST" {} $public_key $secret_key
+        puts "${::GREEN}Service frozen: $sleep_id${::RESET}"
         return
     }
 
     if {$wake_id ne ""} {
-        api_request "/services/$wake_id/wake" "POST" {} $public_key $secret_key
-        puts "${::GREEN}Service waking: $wake_id${::RESET}"
+        api_request "/services/$wake_id/unfreeze" "POST" {} $public_key $secret_key
+        puts "${::GREEN}Service unfreezing: $wake_id${::RESET}"
         return
     }