add pdf generation

Gemfile.lock

@@ -123,10 +123,8 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
+    cmdparse (3.0.7)
     coderay (1.1.3)
-    combine_pdf (1.0.23)
-      matrix
-      ruby-rc4 (>= 0.1.5)
     concurrent-ruby (1.2.2)
     connection_pool (2.4.0)
     crack (0.4.5)
@@ -199,6 +197,7 @@ GEM
       websocket-driver (>= 0.6, < 0.8)
     ffi (1.15.5)
     geoip (1.6.4)
+    geom2d (0.3.1)
     globalid (1.1.0)
       activesupport (>= 5.0)
     google-apis-core (0.11.0)
@@ -236,6 +235,10 @@ GEM
       os (>= 0.9, < 2.0)
       signet (>= 0.16, < 2.a)
     hashdiff (1.0.1)
+    hexapdf (0.32.2)
+      cmdparse (~> 3.0, >= 3.0.3)
+      geom2d (~> 0.3)
+      openssl (>= 2.2.1)
     htmlentities (4.3.4)
     httpclient (2.8.3)
     i18n (1.13.0)
@@ -296,6 +299,7 @@ GEM
     nokogiri (1.15.0-arm64-darwin)
       racc (~> 1.4)
     oj (3.14.3)
+    openssl (3.1.0)
     orm_adapter (0.5.0)
     os (1.1.4)
     pagy (6.0.4)
@@ -412,7 +416,6 @@ GEM
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
-    ruby-rc4 (0.1.5)
     ruby-vips (2.1.4)
       ffi (~> 1.12)
     ruby2_keywords (0.0.5)
@@ -483,7 +486,6 @@ DEPENDENCIES
   bootsnap
   bullet
   capybara
-  combine_pdf
   cuprite
   debug
   devise
@@ -493,6 +495,7 @@ DEPENDENCIES
   faraday
   geoip
   google-cloud-storage
+  hexapdf
   image_processing
   letter_opener_web
   lograge