#450: map equals-less tokens to 'true' instead of nil (#455)

parse_pairs in lib/judges/options.rb returned [key, nil] for any
token without an equals sign, then normalize_to_h dropped that nil
value with .compact before transform_values could turn it into 'true'.
Producing 'true' directly inside parse_pairs makes the documented
contract hold for both the string and array forms without changing
the hash-input behavior that test_with_nil_values pins.

Co-authored-by: Claude <noreply@anthropic.com>

Author: edmoffo

lib/judges/options.rb

@@ -138,7 +138,7 @@ def parse_pairs
         .map(&:strip)
         .reject(&:empty?)
         .map { |s| s.split('=', 2) }
-        .map { |a| a.size == 1 ? [a[0], nil] : a }
+        .map { |a| a.size == 1 ? [a[0], 'true'] : a }
         .reject { |a| a[0].empty? }
         .to_h
     end

test/test_options.rb

@@ -52,6 +52,19 @@ def test_with_string
     assert_equal(42, opts.b)
   end
 
+  def test_equals_less_token_in_string
+    opts = Judges::Options.new('token=abc123,max_speed=100,debug')
+    assert_equal('abc123', opts.token)
+    assert_equal(100, opts.max_speed)
+    assert_equal('true', opts.debug)
+  end
+
+  def test_equals_less_token_in_array
+    opts = Judges::Options.new(['token=abc123', 'debug'])
+    assert_equal('abc123', opts.token)
+    assert_equal('true', opts.debug)
+  end
+
   def test_with_hash
     opts = Judges::Options.new('foo' => 42, 'bar' => 'hello')
     assert_equal(42, opts.foo)