Show HN: Temporary Markdown sharing with a built-in slide mode

I wanted a zero-friction way to share Markdown. GitHub Gists require an account, pastebins don't render Markdown, and anything else feels like overkill for content you only need for a few days.

tmplink: write Markdown in a split-pane editor with live preview, publish with one click, and get a shareable link that auto-deletes after 7 days. No signup. The feature I find most useful is slide mode. Use `---` separators and your Markdown becomes a navigable presentation with keyboard/swipe controls using Marp. Every link also auto-generates an OGP image for rich previews on Slack/X.