[chubes4]

Found by the hands-off URL repair loop (Automattic/static-site-importer#1874), run against https://housing-resolutions.com/ (workflow wf-ssi-url-proof-7f052461a787, iteration 1).

Finding

SSI's finding packets flagged 10 core/html fallback blocks, all <form> elements (form.space-y-4, form.rounded-2xl…) on the assessment, disclosures, foreclosure-help, login, selling and trust pages. Each packet is owned by blocks-engine/php-transformer with the repair class replace_fallback_block.

Change

HTML forms now convert to editable Jetpack contact-form blocks instead of falling back to core/html:

• packages/blocks-engine/src/form-html.ts: the converter;
• catalog.ts: registration;
• tests and fixture cases;
• a changelog entry.

Verification

• pnpm test in packages/blocks-engine on Lab: 519 passed, 3 failed. Current trunk (03f44b29) has the same 3 failures on its own (503 passed, 3 failed), all in associated-label-save-validity.test.ts and wp-runtime-bundle.test.ts. This change adds 16 passing tests and no new failures.
• Branch base: rebased onto trunk 03f44b29.
• Next loop iteration: this branch follows the loop's naming convention, so the next iteration composes it into its candidate and measures the form blocks again.

AI disclosure

A Homeboy Cook (OpenCode, Claude Sonnet) produced this candidate inside the URL repair loop. Promotion failed on a stale Lab base checkout, so Claude (Anthropic) in OpenCode rebased it onto trunk, ran the test baseline comparison and opened this PR, under Chris Huber's direction.

[chubes4]

Closing: this changes only the JS package (packages/blocks-engine). The importer path SSI uses is php-transformer, and the finding packets were owned by blocks-engine/php-transformer, so this cannot fix the reported form fallbacks.

Root cause in the URL repair loop (Automattic/static-site-importer#1874): the repair prompt named only the repository, not the owning component, and the php-transformer verify gate passed because nothing in php-transformer changed. The loop will name the owning component and path from the packet owner and reject repairs that do not touch it.

AI disclosure: Claude (Anthropic) via OpenCode, under Chris Huber's direction.