Release Interly 0.5.1

[interlinkglobal]

Release summary

Promotes the completed Interly 0.5.1 work from agent/next-ten-roadmap to main.

Included:

• canonical interly command with temporary interlink alias
• bounded set-free 1 through set-free 30 automatic approval windows
• set-free 0 opt-out
• WinGet-first standalone updates
• SHA-256-verified GitHub Release fallback
• 0.5.1 Windows executable, installer, release asset, and manifest configuration

Verification

• feature PRs Add timed automatic command approval #2 and Release Interly 0.5.1 with resilient updates #3 merged
• 24 relevant updater, CLI, distribution, installer, and chat tests passed
• Ruff passed
• git diff --check passed

After this PR is merged, create release tag v0.5.1 targeting the resulting main commit.