tree 59fbf57ce3ce72ce7de16fdf50c7525b85902c1d
parent 67c3e7833c7247afccea553c5e5accea17e4db18
author Antonio Barone <syntonyze@gmail.com> 1756842473 +0200
committer Antonio Barone <syntonyze@gmail.com> 1756895380 +0200

Forward project-wide change index deletions

When a project is deleted, all of its changes are removed from the
index.

Listen to the core onAllChangesDeletedForProject hook and forward a
single project-scoped change-index event so peers can delete all change
documents for that project in one operation.

Key changes:
- Add handling of onAllChangesDeletedForProject in IndexEventHandler and
  enqueue a task that emits a consolidated change-index event.
- Extend ChangeIndexEvent with an "all deleted for project" marker
  (deleted=true, changeId=0), plus helpers to create/detect it.
- Teach IndexEventRouter to route the special event to a new
  ForwardedIndexChangeHandler.deleteAllForProject path.
- Implement deleteAllForProject in the handler, invoking
  ChangeIndexer.deleteAllForProject(Project.NameKey) under a forwarded
  context to avoid echo loops.

Bug: Issue 440670678
Change-Id: I933a06bf9ce75eb6998f828425234f4677e5bcd7