chore(release): 0.21.0

[JonasJesus42]

Version bump 0.20.0 → 0.21.0 + CHANGELOG.

• Added: whole-store capture — sitemap sampling incl. institutional pages + per-page VTEX block tree/content + per-page report (feat(migrate): sample more pages (incl. institutional) + report organized per page #214).
• Fixed: exact-duplicate VTEX block dedup (5242 → 883) (feat(migrate): dedupe exact-duplicate VTEX blocks #215); category-auto avoids institutional (feat(migrate): sample more pages (incl. institutional) + report organized per page #214).

Version-bump + CHANGELOG only.

🤖 Generated with Claude Code

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Summary by cubic

Releases @decocms/parity 0.21.0. Previously parity migrate captured only the home page; it now samples multiple page types from the sitemap (including institutional), collects VTEX block trees and content per page, and renders one report separated by page. Exact-duplicate VTEX blocks are collapsed, and category-auto avoids institutional pages.

• Default sampling is --sample plp=2,pdp=2,other=3,search=1 (capped at 15); expect longer runs and broader coverage.
• Reports now show a "Global components" section plus one section per captured page; update any report parsers or dashboards that assumed a single-page report.
• VTEX block dedup reduces counts in blocks.json and annotates a repeated count; update any automation that relies on raw block totals.

^{Written for commit 60f0ea0. Summary will update on new commits.}