fix: pass args as positional Hash to create_action (#414)

The wallet's create_action signature is `create_action(args, _originator: nil)`
where args is a positional Hash. Passing bare keyword arguments fails on
Ruby 3.0+ with `ArgumentError: unknown keywords`. Wrap in explicit `{}`
and update spec mocks to match the real wallet interface signature.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: sgbett

gem/bsv-attest/lib/bsv/attest.rb

@@ -35,13 +35,15 @@ def publish(data, wallet: nil, description: nil)
         desc = description || 'Attest data hash to chain'
 
         result = w.create_action(
-          description: desc,
-          outputs: [{
-            locking_script: script.to_hex,
-            satoshis: 0,
-            output_description: 'Attestation hash'
-          }],
-          options: { randomize_outputs: false }
+          {
+            description: desc,
+            outputs: [{
+              locking_script: script.to_hex,
+              satoshis: 0,
+              output_description: 'Attestation hash'
+            }],
+            options: { randomize_outputs: false }
+          }
         )
 
         raise BroadcastError, result[:broadcast_error] if result[:broadcast_error]

gem/bsv-attest/spec/bsv/attest_spec.rb

@@ -46,7 +46,7 @@
 
     let(:mock_wallet) do
       Class.new do
-        def create_action(_args)
+        def create_action(_args, _originator: nil)
           { txid: 'bb' * 32 }
         end
       end.new
@@ -56,7 +56,7 @@ def create_action(_args)
       Class.new do
         attr_reader :last_args
 
-        def create_action(args)
+        def create_action(args, _originator: nil)
           @last_args = args
           { txid: 'bb' * 32 }
         end
@@ -101,7 +101,7 @@ def create_action(args)
 
     it 'raises BroadcastError on broadcast failure' do
       failing_wallet = Class.new do
-        def create_action(_args)
+        def create_action(_args, _originator: nil)
           { txid: 'bb' * 32, broadcast_error: 'transaction rejected' }
         end
       end.new