Link Workspace Packages

This handles the surprisingly fiddly task of wiring up dependencies between packages in a monorepo, whether you're using npm, yarn, pnpm, or bun. It knows when to use workspace protocols versus let the package manager auto-symlink, and critically, it recognizes when "cannot find module" errors mean you need proper workspace linking instead of tsconfig path hacks. The workflow is straightforward: detect your package manager from lockfiles, identify which package needs which dependency, run the right command with the right flags. Honestly, the main value is not having to remember whether your setup wants `--filter`, `--workspace`, or just a plain add from the right directory.