Prepare Alpha Release

[mansona]

This PR is a preview of the release that release-plan has prepared. To release you should just merge this PR 👍

---

Release (2026-04-20)

• ember-cli 7.0.0-alpha.1 (minor)
• @ember-tooling/classic-build-addon-blueprint 7.0.0-alpha.1 (minor)
• @ember-tooling/classic-build-app-blueprint 7.0.0-alpha.1 (minor)

🚀 Enhancement

• ember-cli, @ember-tooling/classic-build-addon-blueprint, @ember-tooling/classic-build-app-blueprint
  • #10996 Prepare 7.0 Alpha (@mansona)
• @ember-tooling/classic-build-addon-blueprint, @ember-tooling/classic-build-app-blueprint
  • #10939 Add warpDrive support to app-blueprint (@Copilot)
• @ember-tooling/classic-build-app-blueprint, ember-cli
  • #10969 Update ember-cli-htmlbars to ^7.0.0 in app-blueprint (@Copilot)

🐛 Bug Fix

• @ember-tooling/classic-build-addon-blueprint, @ember-tooling/classic-build-app-blueprint
  • #10977 Backport: Enable use-ember-modules in blueprint optional-features.json (@NullVoxPopuli-ai-agent)
  • #10976 Enable use-ember-modules in blueprint optional-features.json (@Copilot)
• @ember-tooling/classic-build-app-blueprint, ember-cli
  • #10975 Backport: Update ember-cli-htmlbars to ^7.0.0 in app-blueprint (@NullVoxPopuli-ai-agent)
• @ember-tooling/classic-build-addon-blueprint, @ember-tooling/classic-build-app-blueprint, ember-cli
  • #10974 Backport: Remove tracked-built-ins (it comes built in with ember-source 6.8+) (@NullVoxPopuli-ai-agent)
• ember-cli
  • #10972 Support ember-source (ESM) -- without addon vendor paths (@NullVoxPopuli)

🏠 Internal

• ember-cli
  • #10990 bump node on publish.yml and stop updating npm (@mansona)
  • #10982 Update publish.yml to use PAT so that output repos workflow will run (@kategengler)
  • #10967 Replace temp package with Node.js built-in fs.mkdtemp (@Copilot)
  • #10931 update Release.md (@mansona)

Committers: 5

• @NullVoxPopuli's reduced-access machine account for AI usage (@NullVoxPopuli-ai-agent)
• Chris Manson (@mansona)
• Copilot [Bot] (@copilot-swe-agent)
• Katie Gengler (@kategengler)
• @NullVoxPopuli