Release develop docs updates to main

[ihsraham]

Summary

Promote the current develop documentation set to main.

This release carries #229: Document Shamir mnemonic recovery and moves the documented source-route set from 329 to 330 pages.

Included

• Adds a Shamir Secret Sharing guide for the @tetherto/wdk-utils beta.11 mnemonic-sharing helpers.
• Covers threshold design, share authentication, recovery verification, runtime prerequisites, compatibility, and failure behavior.
• Updates the WDK Utils overview, configuration, API reference, navigation, llms.txt, and llms-full.txt.
• Hardens the recovery examples and clarifies the checksum, wallet-identity, and Bare 1.28 guidance.
• Fixes the stale VS Code MCP documentation link.