feat(mesh): blog product-block editor + post publication status

[yuriassuncx]

Summary

• Routes blog/sections/blocks/ProductCard and ProductShelf to dedicated editors that persist platform:kind:id string refs (vtex:product:123), aligned with the deco-cms/blog app schema.
• Keeps the existing loader-ref editor for site/sections/Blog/Post/* blocks (e.g. Elux storefront sections).
• Prevents Studio mesh saves from rewriting Spire/admin-authored posts into VTEX productList loader-ref shapes.

Context

Complements deco-cx/apps#1603, which keeps string refs as the canonical blog app contract and adds hybrid runtime coercion for loader-ref compat.

Test plan

• bun test for product-string-blocks.test.ts and blog-data.app-blocks.test.ts
• Open a Spire post with { product: vtex:product:ID } in mesh — field shows the ref; save keeps string format
• Open a site section post (site/sections/Blog/Post/ProductCard) — loader-ref editor unchanged

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Summary by cubic

Adds a platform‑agnostic string‑ref editor for blog/sections/blocks/ProductCard and ProductShelf, and brings post publication status to the blog editor with live draft previews. Also adds deep‑linking to open the content editor on a specific blog item.

• New Features

  • Route blog app blocks to AppProductCardBlock and AppProductShelfBlock via isBlogAppBlockResolveType; keep loader‑ref editors for site/sections/Blog/Post/*.
  • Add post status (draft/published/archived/awaiting_review/generating), stored in post.status, with a badge + selector in the editor, a status filter and per‑row badge in the posts list; legacy posts default to published; preview URLs append ?preview=true so drafts render.
  • Support deep‑linking into the content editor via contentCollection/contentItem URL params to preselect a blog collection and open a specific record.

• Bug Fixes

  • Use DynamicOptionsField for app product refs and thread SandboxConfig from PostEditor/CategoryEditor through BlockDocument → BlockRow → product blocks so the picker works.
  • Fix className composition in post‑status components using cn() to satisfy the new lint rule.

^{Written for commit f3b5e8e. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 6 files

_{Re-trigger cubic}