fix(hub): resolve notify-delivery rebase conflict against current main

Rebase onto origin/main (post tenancy deletion) mis-resolved the
notify import block, keeping references to files already removed on
main (tenant-create-guard, access-policy, memory-mount, skills-mount).
Restore main's direct createHubNotifyDeliveryDeps composition.

Claude-Session: https://claude.ai/code/session_01RweuMUskU2nvcFhdckc7EG

Author: TheGreatAxios

apps/hub/src/index.ts

@@ -243,28 +243,7 @@ import {
   createProviderHealthPort,
   createProviderHealthStore,
 } from "@corbits/connections/provider-health";
-import {
-  applyAccessPolicyMigrations,
-  createAccessPolicyRoutes,
-  createDrizzleAccessPolicyStore,
-} from "@workbench/access-policy";
-import { guardedHubApp, resolveCallerRoleNames } from "./tenant-create-guard";
-import {
-  loadAnchorDispatch,
-  resolveAnchorTenantId,
-  withDispatchTenantGuard,
-  withTenantBoundAllocationService,
-} from "./dispatch-tenant-guard";
-import { createTenantCreateObserver } from "./tenant-create-onboard";
 import { createHubNotifyDeliveryDeps } from "./notify-delivery";
-import { mountMemory } from "./memory-mount";
-import { mountSkills } from "./skills-mount";
-import {
-  createUnavailableWorkflowMemoryRoutes,
-  createWorkflowMemoryRoutes,
-  createWorkflowMemoryStore,
-} from "@corbits/memory-hub";
-import { createSkillRoutes, createWorkflowSkillRoutes } from "@corbits/skills";
 import {
   createWorkflowAuthorRegistry,
   createWorkflowAuthorRoutes,