fix: address PR feedback on programmatic API and workers

- runner.js: escape regex metacharacters in runTest() grep so titles with
  brackets/parens match literally and exactly (anchored ^…$)
- index.js: add Codecept and Helper as named exports so
  `import { Codecept } from 'codeceptjs'` works as documented
- workers.js: restore per-worker report path overrides for multiple runs,
  using the generic replaceValueDeep approach already in run-multiple.js.
  Without this, mochawesome/mocha-junit-reporter overwrite each other
  across browser workers.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: DavertMik

lib/index.js

@@ -77,4 +77,4 @@ export default {
 }
 
 // Named exports for ESM compatibility
-export { codecept, output, container, event, recorder, config, actor, helper, pause, within, dataTable, dataTableArgument, store, locator, heal, ai, Workers, Secret, secret, Result, Runner }
+export { codecept, codecept as Codecept, output, container, event, recorder, config, actor, helper, helper as Helper, pause, within, dataTable, dataTableArgument, store, locator, heal, ai, Workers, Secret, secret, Result, Runner }

lib/runner.js

@@ -1,4 +1,5 @@
 import fsPath from 'path'
+import escapeRe from 'escape-string-regexp'
 import container from './container.js'
 import MochaFactory from './mocha/factory.js'
 import event from './event.js'
@@ -60,7 +61,7 @@ class Runner {
   }
 
   async runTest(test) {
-    return this._execute({ grep: test.fullTitle })
+    return this._execute({ grep: `^${escapeRe(test.fullTitle)}$` })
   }
 
   async _execute({ files, grep } = {}) {

lib/workers.js

@@ -13,7 +13,7 @@ import Codecept from './codecept.js'
 import MochaFactory from './mocha/factory.js'
 import Container from './container.js'
 import { getTestRoot } from './command/utils.js'
-import { isFunction, fileExists } from './utils.js'
+import { isFunction, fileExists, replaceValueDeep } from './utils.js'
 import mainConfig from './config.js'
 import output from './output.js'
 import event from './event.js'
@@ -119,8 +119,11 @@ const createWorkerObjects = (testGroups, config, testRoot, options, selectedRuns
 
   createRuns(selectedRuns, config).forEach(worker => {
     const workerName = worker.name.replace(':', '_')
-    const _config = mainConfig.applyRunConfig(config, worker.getConfig())
-    _config.output = path.join(config.output, workerName)
+    let _config = mainConfig.applyRunConfig(config, worker.getConfig())
+    const workerOutput = path.join(config.output, workerName)
+    _config = replaceValueDeep(_config, 'output', workerOutput)
+    _config = replaceValueDeep(_config, 'reportDir', workerOutput)
+    _config = replaceValueDeep(_config, 'mochaFile', path.join(workerOutput, `${workerName}_report.xml`))
     workersToExecute.push(_config)
   })
   const workers = []