refactor: drop lib/host.js, install registry inline in the runner

lib/host.js was a separate module that did one thing: assign
globalThis.codeceptjs = { config, container, event, output, recorder, Helper }.
Imported as a side effect from lib/codecept.js (the runner) and
lib/plugin/browser.js (so the browser-plugin unit test would also get
the registry, since it imports the plugin directly without going through
the runner).

The indirection wasn't earning its keep — and it read like we were
quietly re-introducing the user-facing globals we just deprecated.

- Inline the assignment at the top of lib/codecept.js. The runner is the
  one place that should own this; everything that goes through the CLI
  hits this module first.
- Drop the import from lib/plugin/browser.js. Plugins shouldn't be
  responsible for installing framework registries.
- The browser-plugin unit test bypasses the runner, so it now installs
  globalThis.codeceptjs in its setup — same pattern we use in the
  @codeceptjs/configure test suite.

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

Author: DavertMik

lib/codecept.js

@@ -32,7 +32,16 @@ import globalTimeoutListener from './listener/globalTimeout.js'
 import globalRetryListener from './listener/globalRetry.js'
 import exitListener from './listener/exit.js'
 import emptyRunListener from './listener/emptyRun.js'
-import './host.js'
+
+// Register an in-process handle so companion packages (@codeceptjs/configure,
+// @codeceptjs/expect-helper, @codeceptjs/helper) can reach the running
+// framework without doing a top-level `import 'codeceptjs'` — that bare
+// specifier doesn't resolve in this repo's own checkout (the project IS the
+// codeceptjs package). End-user projects don't need this either way; npm
+// resolves `codeceptjs` from their node_modules and the bare import works.
+if (!globalThis.codeceptjs) {
+  globalThis.codeceptjs = { config: Config, container, event, output, recorder, Helper }
+}
 
 /**
  * CodeceptJS runner

lib/host.js

@@ -1,5 +1,4 @@
 import output from '../output.js'
-import '../host.js'
 
 /**
  * Overrides browser helper config from the command line. Works for all browser helpers

lib/plugin/browser.js

@@ -1,6 +1,16 @@
 import { expect } from 'chai'
-import browser from '../../../lib/plugin/browser.js'
 import Config from '../../../lib/config.js'
+import container from '../../../lib/container.js'
+import event from '../../../lib/event.js'
+import output from '../../../lib/output.js'
+import recorder from '../../../lib/recorder.js'
+
+// This test imports the plugin directly, bypassing the runner. The runner
+// (lib/codecept.js) is what normally installs globalThis.codeceptjs so that
+// @codeceptjs/configure can reach framework singletons; do the same here.
+globalThis.codeceptjs = { config: Config, container, event, output, recorder }
+
+import browser from '../../../lib/plugin/browser.js'
 
 async function applyAndCreate(args, base = {}) {
   Config.reset()