v0.62.0

RFC 3986 URI normalization for document IDs

HTTP/HTTPS URIs are now canonicalized before storage and lookup, applying five safe normalizations from RFC 3986 §6.2.2:

1. Scheme + host lowercasing (HTTPS://Example.COM → https://example.com)
2. Unreserved percent-decoding (%41 → A)
3. Default port removal (:443 on https, :80 on http)
4. Dot segment resolution (/a/../b → /b)
5. Empty path normalization (https://example.com → https://example.com/)

This prevents phantom duplicate items when the same URL is indexed with different casing or encoding. Non-URI IDs are unaffected.

Also fixes a gap where find(similar_to=...) was not validating the ID parameter.