Release: Patch 9.0.12

[github-actions]

This is an automated pull request that bumps the version from 9.0.11 to 9.0.12.
Once this pull request is merged, it will trigger a new release of version 9.0.12.
If you're not a core maintainer with permissions to release you can ignore this pull request.

To do

Before merging the PR, there are a few QA steps to go through:

• Add the "freeze" label to this PR, to ensure it doesn't get automatically forced pushed by new changes.
• Add the "ci:daily" label to this PR, to trigger the full test suite to run on this PR.

And for each change below:

1. Ensure the change is appropriate for the version bump. E.g. patch release should only contain patches, not new or de-stabilizing features. If a change is not appropriate, revert the PR.
2. Ensure the PR is labeled correctly with one of: "BREAKING CHANGE", "feature request", "bug", "maintenance", "dependencies", "documentation", "build", "unknown".
3. Ensure the PR title is correct, and follows the format "[Area]: [Summary]", e.g. "React: Fix hooks in CSF3 render functions". If it is not correct, change the title in the PR.
   • Areas include: React, Vue, Core, Docs, Controls, etc.
   • First word of summary indicates the type: “Add”, “Fix”, “Upgrade”, etc.
   • The entire title should fit on a line

This is a list of all the PRs merged and commits pushed directly to next, that will be part of this release:

• ✨ Feature Request: CLI: Improve support for upgrading Storybook in monorepos #31557
• 🐛 Bug: CLI: Fix package manager instantiation in empty directories #31743
• 🔧 Maintenance: CLI: Show Storybook version in the upgrade command #31774
• 🐛 Bug: Addon Vitest: Support init in Vitest >= 3.2 #31715
• 🐛 Bug: Core: Enhance package manager install methods to support optional force flag #31796
• 📝 Documentation: Docs: Enhance upgrading guide #31744
• 📝 Documentation: Docs: Update CLI options #31784
• 📝 Documentation: Docs: Update docs to support Angular 20 #31794

🍒 Manual cherry picking needed!

The following pull requests could not be cherry-picked automatically because it resulted in merge conflicts.
For each pull request below, you need to either manually cherry pick it, or discard it by replacing the "patch:yes" label with "patch:no" on the PR and re-generate this PR.

• #31557: git cherry-pick -m1 -x 9c2f2fd69903436c054c20943efe46c94d50b8dc
• #31743: git cherry-pick -m1 -x ee73339c3d11656d05e60f19a767bc0fec43c07e
• #31774: git cherry-pick -m1 -x 4af25ad443c64f8fd5d357f2b2799bf1a93a2a91
• #31715: git cherry-pick -m1 -x 1cce824e7011de2a36e4b3be6f72e500a606d260
• #31796: git cherry-pick -m1 -x c8f2db10f6f5ba54cd5207e45ddc55ed05bf373a

If you've made any changes doing the above QA (change PR titles, revert PRs), manually trigger a re-generation of this PR with this workflow and wait for it to finish. It will wipe your progress in this to do, which is expected.

Feel free to manually commit any changes necessary to this branch after you've done the last re-generation, following the Make Manual Changes section in the docs, especially if you're making changes to the changelog.

When everything above is done:

• Merge this PR
• Follow the run of the publish action

---

Generated changelog

9.0.12

• Addon Vitest: Support init in Vitest >= 3.2 - #31715, thanks valentinpalkovic!
• CLI: Fix package manager instantiation in empty directories - #31743, thanks yannbf!
• CLI: Improve support for upgrading Storybook in monorepos - #31557, thanks yannbf!
• CLI: Show Storybook version in the upgrade command - #31774, thanks yannbf!
• Core: Enhance package manager install methods to support optional force flag - #31796, thanks valentinpalkovic!

Greptile Summary

Patch release 9.0.12 focusing on CLI improvements and Vitest addon updates, with significant enhancements to monorepo support and package manager handling.

• Enhanced CLI with improved monorepo upgrade support and new logging options (--write-logs, --loglevel) in docs/api/cli-options.mdx
• Added Vitest addon compatibility for version >= 3.2 with proper init support in code/package.json
• Fixed package manager instantiation in empty directories and added force flag support
• Updated Angular documentation to extend support for version 20 in docs/get-started/frameworks/angular.mdx
• Enhanced upgrade guide with comprehensive monorepo instructions in docs/configure/upgrading.mdx

[greptile-apps]

LGTM

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