Fix: Restore connectivity.libp2p.io content into unified website

[sumanjeet0012]

Problem

The connectivity.libp2p.io subdomain was previously a standalone React/Next.js site that served a rich explainer covering all libp2p transport protocols (TCP, QUIC, Hole Punching, WebSocket, WebTransport, WebRTC). The site was deprecated and the subdomain began redirecting to https://libp2p.io, silently losing all the educational content it hosted.

Solution

The connectivity explainer has been fully restored and integrated directly into the unified libp2p website at /connectivity/.

The content was recovered from the Wayback Machine archive and all assets (SVGs, CSS, fonts) were extracted and served locally — no external dependency on the original domain.

Changes

File	Description
content/connectivity/_index.md	Section entry point for the Zola static site
templates/connectivity.html	Full-fidelity replica of the original connectivity page
static/connectivity.css	Original Tailwind CSS extracted from the archived site
static/img/connectivity/*.svg	All 8 transport protocol SVG icons (TCP, QUIC, WebSocket, WebTransport, WebRTC, Hole Punching, hero, logo)
config.toml	Added "Connectivity" entry to the main navigation bar
templates/base.html	Added redirect logic for the connectivity.libp2p.io subdomain

Details

• All content preserved: Every section from the original — TCP, QUIC, Hole Punching, WebSocket, WebTransport, WebRTC — including support matrices, "Counting Round Trips" tabs, "Further Reading" links,
and the hero CTA button ("Connect With Developers").
• Styling fidelity: The original site's CSS custom properties (--accent1-color, --primary-color, font variables, etc.) were recovered from the archived CSS and injected as :root variables, ensuring
icon backgrounds, link colors, and typography exactly match the original.
• All links fixed: Internal links that pointed to the archived Wayback Machine URLs (web.archive.org/web/.../connectivity.libp2p.io#...) have been updated to local anchor links (#tcp, #quic, etc.).
External links (GitHub, IETF RFCs, MDN, W3C) have been cleaned and point directly to their canonical sources.
• Navigation: "Connectivity" is now a first-class entry in the site's top navigation bar, between "Home" and "Blog".

Archived reference: https://web.archive.org/web/20251118040510/https://connectivity.libp2p.io

[sumanjeet0012]

@seetadev @johannamoran

I've restored the connectivity.libp2p.io explainer content and integrated it directly into the unified website at /connectivity/.

You can preview it here: http://100.26.22.114:1111/connectivity/