Problem

resolveProfileHint() in src/wizard/onboarding.completion.ts falls back to $PROFILE for PowerShell instead of resolving the actual profile path.

Why It Matters

• New Windows users get a generic hint instead of a concrete file path.
• The reload guidance is less actionable than the zsh/bash/fish branches.
• PowerShell profile locations can vary, which makes a generic placeholder harder to verify.

Suggested Direction

Resolve and show the actual PowerShell profile path when shell completion is installed, and consider giving a concrete reload command when safe.

Example goals:

• show the full path behind $PROFILE
• provide a precise reload hint when applicable
• keep the UX consistent with other shell onboarding flows

Acceptance Criteria

• PowerShell completion onboarding prints a concrete profile location.
• The reload message is specific and actionable.
• The implementation is covered by a small Windows-focused test.