Initial commit: ZPL-native PDF printing, drop CUPS dependency

Gemfile.lock

@@ -0,0 +1,56 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    base64 (0.3.0)
+    chunky_png (1.4.0)
+    logger (1.7.0)
+    multi_json (1.21.1)
+    mustermann (3.1.1)
+    nio4r (2.7.5)
+    ostruct (0.6.3)
+    puma (8.0.2)
+      nio4r (~> 2.0)
+    rack (3.2.6)
+    rack-protection (4.2.1)
+      base64 (>= 0.1.0)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.1.2)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
+    rackup (2.3.1)
+      rack (>= 3)
+    rqrcode (3.2.0)
+      chunky_png (~> 1.0)
+      rqrcode_core (~> 2.0)
+    rqrcode_core (2.1.0)
+    sinatra (4.2.1)
+      logger (>= 1.6.0)
+      mustermann (~> 3.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.2.1)
+      rack-session (>= 2.0.0, < 3)
+      tilt (~> 2.0)
+    sinatra-contrib (4.2.1)
+      multi_json (>= 0.0.2)
+      mustermann (~> 3.0)
+      rack-protection (= 4.2.1)
+      sinatra (= 4.2.1)
+      tilt (~> 2.0)
+    tilt (2.7.0)
+
+PLATFORMS
+  aarch64-linux
+  armv7l-linux-eabihf
+
+DEPENDENCIES
+  logger
+  ostruct
+  puma
+  rackup (~> 2.1)
+  rqrcode
+  sinatra
+  sinatra-contrib
+
+BUNDLED WITH
+  4.0.14