docs: record 0.1.3 release evidence

[tensornull]

What changed

• record immutable 0.1.3 implementation, release-PR, tag, GitHub Release, live-smoke, OIDC, registry, digest, provenance, public-install, contract, and README evidence
• record the scoped release-PR changelog finalization and the observed bounded PyPI CDN propagation retry
• confirm both release opt-in variables are restored to false and recovery variables remain absent

Why

The release process requires accepted remote, live, and registry evidence to be captured in a separate post-release documentation pull request. Exact versions appear only as dated immutable history; persistent/current-state guidance remains publication-neutral.

Validation

• uv sync --locked
• Ruff check and format check
• Pyright strict
• pytest -m "not live" (378 passed, 1 deselected)
• changelog, public-preview, and releasable document/version gates
• secret and workflow semantic checks
• actionlint 1.7.12
• wheel/sdist build, twine, artifact inspection, and independent clean installs
• copied standalone repository verification (378 passed, 1 deselected)
• git diff --check
• independent scope/spec/standards review: no findings