fix: standalone bundle + standardrb clean

- Gemfile: fall back to the published interscript-maps gem when no
  sibling ../maps checkout exists, so the repo bundles standalone
  (mirrors the existing secryst group pattern)
- Clear all remaining standardrb offenses in lib/: mechanical
  corrections (chars, and/or precedence, paren-wrapped assignment),
  explicit directives for deliberate patterns (eval-based compiler,
  method_missing DSL, execution-context globals, debug hooks)
- Verified zero behavior change: transliteration smoke test identical
  before/after

Author: ronaldtse

Gemfile

@@ -5,7 +5,11 @@ gemspec
 gem "rake", "~> 13.0"
 gem "rspec", "~> 3.13"
 
-gem "interscript-maps", path: "../maps"
+if File.exist?("../maps")
+  gem "interscript-maps", path: "../maps"
+else
+  gem "interscript-maps"
+end
 
 group :secryst do
   if File.exist?("../../secryst")

lib/interscript.rb

@@ -136,12 +136,13 @@ def rababa_provision(model_name, model_uri)
 
       # Redownload every hour
       if File.exist?(model_path) && File.mtime(model_path) + 3600 >= Time.now
-        model_path
       else
+        # standard:disable Security/Open -- fetches the configured model into the local cache
         data = URI.open(model_uri, encoding: "BINARY").read
+        # standard:enable Security/Open
         File.binwrite(model_path, data)
-        model_path
       end
+      model_path
     end
 
     def map_aliases

lib/interscript/compiler/ruby.rb

@@ -1,3 +1,4 @@
+# rubocop:disable Style/GlobalVars, Security/Eval -- map-evaluation context globals; eval runs generated map code
 $main_binding = binding
 
 class Interscript::Compiler::Ruby < Interscript::Compiler
@@ -264,3 +265,4 @@ def self.reset_debug_data
     $map_debug = []
   end
 end
+# rubocop:enable Style/GlobalVars, Security/Eval

lib/interscript/dsl/items.rb

@@ -1,7 +1,7 @@
 module Interscript::DSL::Items
   include Interscript::DSL::SymbolMM
 
-  def method_missing sym, *args, **kwargs, &block
+  def method_missing sym, *args, **kwargs, &block # standard:disable Style/MissingRespondToMissing -- every method builds a DSL item
     super if args.length > 0
     super if kwargs.length > 0
     super if /[?!=]\z/.match?(sym.to_s)

lib/interscript/dsl/metadata.rb

@@ -37,6 +37,7 @@ def initialize(yaml: false, map_name: "", library: true, &block)
       when String, Integer, Date
         @node[sym] = stuff.to_s
       when NilClass
+        # nil means the key is intentionally absent
       else
         warn "[#{@map_name}] Metadata key #{sym} expects a String, but #{stuff.class} was given"
         @node[sym] = stuff.inspect

lib/interscript/dsl/symbol_mm.rb

@@ -1,5 +1,5 @@
 module Interscript::DSL::SymbolMM
-  def method_missing sym, *args, **kwargs, &block
+  def method_missing sym, *args, **kwargs, &block # standard:disable Style/MissingRespondToMissing -- every method builds a DSL item
     super if args.length > 0
     super if kwargs.length > 0
     super if /[?!=]\z/.match?(sym.to_s)

lib/interscript/interpreter.rb

@@ -1,3 +1,5 @@
+# rubocop:disable Style/GlobalVars
+# $select_nth_string/$DEBUG_RE/$subs_array are deliberate execution/debug context flags
 class Interscript::Interpreter < Interscript::Compiler
   attr_accessor :map
   def compile(map, _: nil)
@@ -48,7 +50,7 @@ def call(str, stage = :main, each: false, &block)
             options_set = true
 
             opts = options.map { |i| (0...i).to_a }
-            choices = opts[0].product(*opts[1..-1])
+            choices = opts[0].product(*opts[1..])
           end
 
           yielder.yield(result)
@@ -252,3 +254,4 @@ def build_item i, target = nil, doc = @map
     end
   end
 end
+# rubocop:enable Style/GlobalVars

lib/interscript/node/item.rb

@@ -23,7 +23,7 @@ def + other
 
       middle = [this.last + other.first]
       this = this[0..-2]
-      other = this[1..-1]
+      other = this[1..]
     end
 
     g = Interscript::Node::Item::Group.new(*this, *middle, *other)
@@ -41,7 +41,7 @@ def ==(other)
   end
 
   def self.try_convert(i)
-    i = Interscript::Node::Item::String.new(i) if i.class == ::String
+    i = Interscript::Node::Item::String.new(i) if i.instance_of?(::String)
     raise Interscript::MapLogicError, "Wrong type #{i.class}, expected I::Node::Item" unless Interscript::Node::Item === i
     i
   end

lib/interscript/node/item/alias.rb

@@ -52,7 +52,7 @@ def inspect
     if map
       "map.#{map}.#{name}"
     else
-      "#{name}"
+      name.to_s
     end
   end
 end

lib/interscript/node/item/any.rb

@@ -19,7 +19,7 @@ def data
     when Array
       value.map { |i| Interscript::Node::Item.try_convert(i) }
     when ::String
-      value.split("").map { |i| Interscript::Node::Item.try_convert(i) }
+      value.chars.map { |i| Interscript::Node::Item.try_convert(i) }
     when Range
       value.map { |i| Interscript::Node::Item.try_convert(i) }
     end
@@ -45,7 +45,7 @@ def first_string
   end
 
   def nth_string
-    return first_string unless $select_nth_string
+    return first_string unless $select_nth_string # standard:disable Style/GlobalVars
 
     d = data
     Fiber.yield(:prepare)