[riasvdv]

Description

Makes Craft safe to run on Laravel Octane (Swoole and RoadRunner), where one worker boots the app once and serves many requests.

State that outlived a request, and how it's reset now:

 Octane RequestReceived / TaskReceived / TickReceived
+  PrepareCraftForNextOperation (registered after boot, so it runs after Octane's own listeners)
+    prepare()
+      forget static memos: element sources, link-type elements, rendered propagation keys, template fallbacks, layout Twig
+      ProjectConfig::reset() + Cms::setDefaultTimezone()   # pick up changes from other workers and commands
+      ProjectConfigRoutes::refresh()                      # re-register project config routes if they changed
+    TemplateRoots::resetViewFactory()                      # per-request view finder for the request's template mode

 craft:mcp:serve (stdio), on each MCP request
   forgetScopedInstances()
-  Element::forgetSources()
+  PrepareCraftForNextOperation::prepare()

Singletons that held request-scoped services now resolve them per use:

 Elements
-  __construct(ElementPlaceholders $placeholders, …)   # kept the first request's preview drafts forever
+  placeholders(): app(ElementPlaceholders::class)
 DraftActivity, ElementWriteActivity          → Sites facade
 DeprecatorServiceProvider, RouteServiceProvider → resolve Deprecator / Routes lazily

 HandleInertiaRequests
-  View::composer('app', fn …) on every request   # composers piled up; the first drained a stale stack
+  View::composer('app', HandleInertiaRequests::class) once, at boot

 Asset::displayName()       # no longer memoized ("Asset" leaked into /fr and /de)
 ErrorPages                 # replaceNamespace() instead of adding the renderer namespace again

laravel/octane is added as a dev dependency only; Craft references its events by class name, so sites without Octane are unaffected.

Breaking for subclasses: Elements::__construct() no longer takes ElementPlaceholders.

Evidence

Differential run, Octane vs. php -S: 1046 identical request sequences (CP pages, three-language site, admin and non-admin users, preview tokens, GraphQL tokens, saves) against two copies of the same seeded workbench.

Server	Steps	Status mismatches	Unexplained body diffs
Swoole, 1 worker	1046	0	0
RoadRunner, 1 worker	1046	0	0
RoadRunner, 4 workers	1046	0	0

The remaining body diffs are random by nature: encrypted values, CSRF/preview tokens, freshly generated UUIDs, and the env-var autocomplete list (Octane's own variables).

Other checks:

• One RoadRunner worker stayed at 209–213 MB RSS across 4830 requests.
• A route saved and then deleted by a separate CLI process went 404 → 200 → 404 on the running worker, without a restart.

Before / after, from tests/Feature/Http/OctaneWorkerTest.php (several requests through one FakeWorker):

worker serves: GET /octane-preview?token=<preview token>, then GET /octane-preview
  before: 'previewing', 'previewing'   # anonymous request saw the draft
  after:  'previewing', 'live'

worker serves: GET /{cpTrigger}/login twice
  before: 2nd response has no Craft.registeredAssetBundles script
  after:  both do

Before / after, from tests/Feature/Mcp/StdioTest.php:

stdio: project_config_get system.name; another process renames it; project_config_get system.name
  before: 'Craft test site'
  after:  'Renamed elsewhere'

composer ci passes.

[github-actions]

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[bencroker]

Thank you!!