docs: record 0.0.38 post-release evidence

[freshtechbro]

Summary

• Update the active 0.0.38 release evidence ledger with npm publish, registry smoke, workflow, tag, release asset, and checksum proof.
• Record the initial coverage-blocked release workflow, the PR test: raise release branch coverage margin #104 coverage fix, and the successful release workflow.
• Mark Chrome Web Store publication as not attempted pending credentials or dashboard access.

Verification

• git diff --check
• node scripts/docs-drift-check.mjs
• focused evidence review: approved, no leakage or accuracy blockers