refactor: remove core-events from main (scaffoldable via gen core-package events)

- Delete packages/core-events/ (15 files)
- Strip @repo/core-events from all 5 feature package.json + apps/web-next/package.json
- Strip @repo/core-events from apps/web-next/next.config.mjs transpilePackages
- Strip E1 + J no-restricted-syntax blocks from core-eslint/base.js (anchor remains)
- Update bind-production.ts: drop bus construction + IEventBus import; rename
  resolveEventsAndJobsProduction → resolveJobsProduction (queue only),
  resolveEventsAndJobsDevSeed → resolveJobsDevSeed (queue only);
  ctx no longer has bus field; BindProductionContext generic arg narrowed
- Update bind-production.test.ts: assert ctx.bus is undefined, drop
  PayloadJobsEventBus/InMemoryEventBus instanceof checks
- Update sign-up-welcome-email.test.ts: assert mailer stays empty without bus
- Inline userSignedUpEvent in auth (drop defineEvent import from core-events)
- Drop InMemoryEventBus fallback from auth/di/module.ts

Feature binders' bus?.subscribe/publish calls remain as no-ops. Scaffold
@repo/core-events back via: pnpm turbo gen core-package events

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

packages/auth/package.json

@@ -20,7 +20,6 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
-    "@repo/core-events": "workspace:*",
     "@repo/core-shared": "workspace:*",
     "@trpc/server": "^11.0.0",
     "inversify": "^6.2.0",

packages/auth/src/di/module.ts

@@ -1,5 +1,4 @@
 import { ContainerModule, type interfaces } from "inversify";
-import { InMemoryEventBus } from "@repo/core-events";
 
 import type { IUsersRepository } from "../application/repositories/users.repository.interface";
 import type { IAuthenticationService } from "../application/services/authentication.service.interface";
@@ -45,13 +44,13 @@ export const AuthModule = new ContainerModule((bind: interfaces.Bind) => {
   );
 
   bind<ISignUpUseCase>(AUTH_SYMBOLS.ISignUpUseCase).toDynamicValue((ctx) =>
-    // Default fallback uses a fresh InMemoryEventBus — real cross-feature
-    // wiring runs through bindProductionAuth / bindDevSeedAuth where the
-    // bindAll() dispatcher passes a shared bus instance.
+    // No default bus — real cross-feature wiring runs through
+    // bindProductionAuth / bindDevSeedAuth where bindAll() passes a shared
+    // bus instance when @repo/core-events is scaffolded.
     signUpUseCase(
       ctx.container.get<IUsersRepository>(AUTH_SYMBOLS.IUsersRepository),
       ctx.container.get<IAuthenticationService>(AUTH_SYMBOLS.IAuthenticationService),
-      new InMemoryEventBus(),
+      undefined,
     ),
   );
 

packages/auth/src/events/user-signed-up.event.ts

@@ -1,6 +1,5 @@
 // packages/auth/src/events/user-signed-up.event.ts
 import { z } from "zod";
-import { defineEvent } from "@repo/core-events";
 
 export const userSignedUpEventSchema = z
   .object({
@@ -12,7 +11,9 @@ export const userSignedUpEventSchema = z
 
 export type UserSignedUpEvent = z.infer<typeof userSignedUpEventSchema>;
 
-export const userSignedUpEvent = defineEvent(
-  "auth.user.signed-up",
-  userSignedUpEventSchema,
-);
+// Inline event descriptor — core-events is optional. The shape { name, schema }
+// satisfies EventBusProtocol.publish / subscribe when the bus is present.
+export const userSignedUpEvent = {
+  name: "auth.user.signed-up" as const,
+  schema: userSignedUpEventSchema,
+};