Fix CLI prerelease publication tags

[Mathieu2301]

Summary

• pass an explicit npm dist-tag for both release namespaces
• keep @miakapp/cli installable through the documented command without --tag
• normalize the CLI bin path so npm pack no longer mutates the source tree
• bump the unpublished CLI release to 4.0.0-alpha.3

Root cause

The cli-v4.0.0-alpha.2 workflow reached npm but npm 11 rejected the prerelease because no explicit --tag was provided. The same pack step also rewrote the bin path in the working tree.

Proof

• bun run check: 310 passing tests
• npm pack ./packages/cli --dry-run --json: package @miakapp/cli@4.0.0-alpha.3
• pre/post pack diff hash unchanged