JSON.stringify silently drops Map entries (serializes as {}), so docs
fetched from the R2 cache had ops as a plain object without .values().
getOps() detects the plain-object case and re-indexes from raw, patching
doc.ops in place for subsequent calls.

Bumps to 0.2.1.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>