feat(create): support creating project in current directory

[jong-kyung]

Summary

• Support vp create --directory . to scaffold a project in the current directory without creating a new folder
• Auto-derive package name from the current directory name (no interactive prompt), similar to cargo init / npm init -y
• Fix "./" input to be treated equivalently to "." in formatTargetDir
• Extract deriveDefaultPackageName to utils.ts for testability
• Log the auto-derived package name when using --directory .

Closes #1077

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[kazupon]

@codex review

[chatgpt-codex-connector]

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[jong-kyung]

@codex review

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Reviewed commit: 8d89bd606a

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[jong-kyung]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: f37413ca02

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• Open a pull request for review
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[jong-kyung]

I've reviewed and addressed all the Codex feedback.

Resolved P1 Issues:

• Fixed monorepo path resolution.
• Added proper rejection for root and existing package paths.
• Fixed exact-match detection.
• Corrected message ordering.

P2 Suggestions (Left as-is):
I intentionally left the P2 suggestions as they are:

• Scoped directory names: These are already handled by monorepoScope.
• Workspace parent directories: These are effectively caught by checkProjectDirExists since they are practically never empty.

@fengmk2 Could you please take a moment to review this PR when you have time? Your feedback would be greatly appreciated!

[fengmk2]

@jong-kyung LGTM, please take a look at CI fails.

[jong-kyung]

@jong-kyung LGTM, please take a look at CI fails.

I fixed it ! Thanks