docs: align spec + dependency-flow with ADR-015

Three follow-up corrections from the docs audit:

- vertical-feature-spec § 13 dropped the events/jobs bullet from the
  "Out of scope (deferred)" list — they shipped, the bullet didn't
  belong there. The spec already mentions ADR-015 elsewhere (§ 4
  optional folders).

- vertical-feature-spec § 14 success criterion replaced "Any
  cross-feature import fails pnpm lint" with the post-ADR-015 reality:
  cross-feature imports are restricted to event contracts (the feature
  boundary tag now accepts feature-tagged deps), but rule E1
  (no-handler-reexport) keeps consumer handlers / use cases /
  repositories private.

- dependency-flow now shows the resolveEventsAndJobs* step in bindAll
  and the (config, tracer, logger, bus, queue) binder signature, plus
  the // <gen:event-handlers> / // <gen:jobs> anchor lines where the
  generators inject subscribe / register calls.

docs/architecture/vertical-feature-spec.md

@@ -659,7 +659,6 @@ Big-bang refactor executed as 11 internal phases; each phase ends with a verific
 - Real Payload integration tests with a test database (stub with mock repos; write real integration tests later)
 - Coverage reporting aggregation across packages (initial vitest setup per-package; aggregation is a follow-up)
 - Multi-browser Playwright matrix (chromium only initially; add firefox/webkit later)
-- Cross-feature events: shipped via `@repo/core-events` (ADR-015, 2026-05-08). Jobs: shipped via `@repo/core-shared/jobs` + Payload's job queue (same ADR).
 - Payload subscriptions / realtime (spec addendum v4); no feature requires it yet
 - CMS app Next.js 15.5 + Payload 3.81 stabilization concerns (recently patched; monitor; no specific action in this refactor)
 
@@ -673,7 +672,7 @@ Big-bang refactor executed as 11 internal phases; each phase ends with a verific
 - `pnpm dev --filter @repo/web-tanstack` renders the same blog post using the same feature packages
 - Storybook builds showing `core-ui` primitives
 - Any deep import (e.g., `import x from '@repo/blog/src/...'`) fails `pnpm lint`
-- Any cross-feature import fails `pnpm lint`
+- Cross-feature imports are restricted to event contracts (ADR-015): the `feature` boundary tag accepts other `feature` tags, but rule E1 (`no-handler-reexport`) keeps consumer handlers, use cases, and repositories private. Importing a publisher's contract is allowed; importing anything else still fails `pnpm lint`.
 - Root `AGENTS.md` and one-per-package AGENTS.md reflect the new architecture
 - 9 new ADRs (5 existing maintained/appended/superseded + 4 new)
 - Zero references to deleted packages anywhere in the codebase