fix(workers): deserialize step events before emitting to master process

Step events (started, finished, passed, failed) were emitted as raw
plain objects from IPC serialization. Plugins listening to these events
received objects without Step class methods (toString, toCliStyled),
causing [object Object] in reporter output.

Apply the same deserialization pattern already used for test events
(deserializeTest) — wrap message.data in a Step instance via
Object.assign(new Step(data.title), data).

Ref: testomatio/e2e-tests#151

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: gololdf1sh

lib/workers.js

@@ -19,6 +19,7 @@ import output from './output.js'
 import event from './event.js'
 import { deserializeTest } from './mocha/test.js'
 import { deserializeSuite } from './mocha/suite.js'
+import Step from './step/base.js'
 import recorder from './recorder.js'
 import store from './store.js'
 import runHook from './hooks.js'
@@ -103,6 +104,8 @@ const simplifyObject = object => {
     }, {})
 }
 
+const deserializeStep = data => Object.assign(new Step(data.title), data)
+
 const createWorkerObjects = (testGroups, config, testRoot, options, selectedRuns) => {
   selectedRuns = options && options.all && config.multiple ? Object.keys(config.multiple) : selectedRuns
   if (selectedRuns === undefined || !selectedRuns.length || config.multiple === undefined) {
@@ -706,20 +709,32 @@ class Workers extends EventEmitter {
           }
           break
         case event.step.finished:
-          this.emit(event.step.finished, message.data)
-          event.dispatcher.emit(event.step.finished, message.data)
+          {
+            const step = deserializeStep(message.data)
+            this.emit(event.step.finished, step)
+            event.dispatcher.emit(event.step.finished, step)
+          }
           break
         case event.step.started:
-          this.emit(event.step.started, message.data)
-          event.dispatcher.emit(event.step.started, message.data)
+          {
+            const step = deserializeStep(message.data)
+            this.emit(event.step.started, step)
+            event.dispatcher.emit(event.step.started, step)
+          }
           break
         case event.step.passed:
-          this.emit(event.step.passed, message.data)
-          event.dispatcher.emit(event.step.passed, message.data)
+          {
+            const step = deserializeStep(message.data)
+            this.emit(event.step.passed, step)
+            event.dispatcher.emit(event.step.passed, step)
+          }
           break
         case event.step.failed:
-          this.emit(event.step.failed, message.data, message.data.error)
-          event.dispatcher.emit(event.step.failed, message.data, message.data.error)
+          {
+            const step = deserializeStep(message.data)
+            this.emit(event.step.failed, step, step.error)
+            event.dispatcher.emit(event.step.failed, step, step.error)
+          }
           break
         case event.hook.failed:
           // Hook failures are already reported as test failures by the worker