[vrtmrz]

This documentation update records the published Commonlib 0.4.2 package and clarifies that deletion recovery is available to opted-in hosts.

• Update the README package version and npm/GitHub Release links to 0.4.2.
• Mark deletion recovery as published in its contract and the scanner reference while retaining the original decision date and reviewed-version baseline.
• Preserve the former README heading anchor, and distinguish package publication from application adoption and physical iPhone performance verification.

The package is published on npm latest and next, and the stable GitHub Release targets 05b7f0d4cd47e4b1ad08875d195eeae6825478df. This PR changes documentation only; published package bytes remain immutable.

Verification: diff and publication-link checks passed. Published registry checksum/provenance contents and clean consumer type/runtime/browser checks were verified separately; LiveSync checks, unit tests, and real Obsidian restart E2E passed against registry 0.4.2.