fix: keep scoped package slash in generated install URLs

[YuF-9468]

Summary

Fixes the scoped package install URL formatting issue reported in #477.

When release package names are reconstructed from storage keys, scoped packages were kept in normalized @scope:pkg form. This propagated to generated install commands and produced invalid URLs.

This change converts normalized separators back to npm package form (/) before rendering release text, so generated install commands use @scope/pkg correctly.

Verification

• Updated package-name reconstruction logic in packages/app/server/api/repo/commits.get.ts.

[btea]

It seems to be a duplicate of #474.

[YuF-9468]

Thanks for the heads-up — I checked this again, and you’re right: this PR overlaps with #474 (same fix intent for scoped package slash handling). To keep discussion and history in one place, I’m closing this as a duplicate of #474.