fix(migrate): duplicate oxlint config arguments

[yusuke99]

Part of #2037:

vp lint -c rejects duplicate flag — generated command runs vp lint -c .oxlintrc.json and fails with Error: argument '-c' cannot be used multiple times in this context.
pdfme (log)

Summary

This PR fixes vp lint failing with argument '-c' cannot be used multiple times in this context after running vp migrate.

Currently, vp migrate rewrites an Oxlint script such as oxlint -c .oxlintrc.json to vp lint -c .oxlintrc.json, even though .oxlintrc.json has been merged into vite.config.ts. When the lint command runs, Vite+ also passes -c vite.config.ts to Oxlint, resulting in duplicate config arguments.

What’s changed

Capture the detected Oxlint config and remove -c or --config arguments when its merged into vite.config.ts — which makes the following changes when running vp migrate:

• Before: oxlint -c .oxlintrc.json → vp lint -c .oxlintrc.json
• After: oxlint -c .oxlintrc.json → vp lint

Note

Since only .oxlintrc.json and .oxlintrc.jsonc are automatically merged into vite.config.ts, explicit -c or --config for custom file is preserved and passed directly to Oxlint.

e.g.) oxlint -c .my-custom-oxlint.config.json → vp lint -c .my-custom-oxlint.config.json

[fengmk2]

@yusuke99 This feature can be postponed for now. We prefer that Vite+ projects still be configured in vite.config.ts.