fix(cli): warn for bare dev at monorepo root

[leno23]

Summary

• warns when vp dev is run bare from a monorepo root
• suggests vp run dev or an explicit package directory like vp dev apps/website
• leaves the existing Vite dev behavior unchanged while reducing the confusing 404/no-app case

Refs #770.

Verification

• git diff --check
• pnpm exec tsgo --noEmit -p packages/cli/tsconfig.json

Blocked

• pnpm -F vite-plus test src/__tests__/monorepo-root-hint.spec.ts fails at Vitest startup because the local Vite dist file is missing: vite/dist/vite/node/index.js.

[netlify]

✅ Deploy Preview for viteplus-preview canceled.

Name	Link
🔨 Latest commit	ef62411
🔍 Latest deploy log	https://app.netlify.com/projects/viteplus-preview/deploys/6a33b618cab3c80008778077

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 8726d35a09

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[leno23]

Pushed a targeted TypeScript fix for packages/cli/src/tests/monorepo-root-hint.spec.ts by removing fixture fields that are not part of WorkspacePackage. Targeted oxfmt check and git diff --check pass locally.

[leno23]

Follow-up pushed: formatted the CLI entry import order reported by the failing vp check step. Local verification: oxfmt --check packages/cli/src/bin.ts and git diff --check.

[leno23]

Addressed the Codex dev preflight finding in ef62411: the monorepo-root dev hint now treats detectWorkspace() as best-effort and falls through to the Rust core command runner if workspace/package-manager detection fails. That keeps vp dev from being blocked by warning-only hint logic for package manager specs such as pnpm@latest.

Local validation:

• git diff --check passed

I intentionally did not keep the default oxfmt rewrite because, without this repo's formatting config, it changed unrelated file-wide quote style; CI should run the configured formatter/checks.

[naokihaba]

I think this is an issue that still needs further discussion and confirmation.

Since it is still being discussed in #770, I believe it would be best to get a consensus from the stakeholders regarding your proposed solution.