Web: Plan sharing and export

[erikdarlingdata]

Overview

Allow users to optionally share plan analysis results with others. Sharing is NOT the default — users must explicitly opt in.

Option A: Share to Server (primary)

• "Share" button triggers a consent dialog: user acknowledges their plan data will be stored on a server for N days
• Plan/analysis uploaded to a lightweight API on Hetzner
• Returns a short URL like plans.erikdarling.com/s/abc123
• Viewer loads the same WASM app but fetches the stored plan instead of paste/upload
• Auto-expire after configurable TTL (7-30 days)
• Requires: simple API (probably minimal .NET or Go), blob storage, cleanup cron

Option B: Export to HTML (complement, no server needed)

• "Export" generates a self-contained HTML file with the analysis baked in
• User can share via email, tickets, Slack — no server dependency
• Works offline
• Could ship first as a quick win before the server-side share feature

Privacy

• The landing page promises "Your plan XML never leaves your browser"
• Share/export must be a separate, explicit action with clear consent
• Never automatic, never the default

Implementation Notes

• Hetzner CLI access available for server setup
• Both options can coexist — export for no-server sharing, server for link sharing