refactor: remove moonrope but maintain legacy API actions (#2889)

Gemfile.lock

@@ -103,7 +103,6 @@ GEM
       database_cleaner-core (~> 2.0.0)
     database_cleaner-core (2.0.1)
     date (3.3.4)
-    deep_merge (1.2.2)
     diff-lcs (1.5.0)
     domain_name (0.6.20240107)
     dotenv (3.0.2)
@@ -184,10 +183,6 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
     minitest (5.22.2)
-    moonrope (2.0.2)
-      deep_merge (~> 1.0)
-      json
-      rack (>= 1.4)
     mysql2 (0.5.6)
     net-http (0.4.1)
       uri
@@ -423,7 +418,6 @@ DEPENDENCIES
   klogger-logger
   konfig-config (~> 3.0)
   mail
-  moonrope
   mysql2
   nifty-utils
   nilify_blanks