Improve static HTML to block save parity

[chubes4]

Summary

• normalize PHP transformer block support serialization so generated markup validates in the editor
• improve navigation submenu conversion, RichText anchor/SVG handling, runtime-island metadata, typography font-family analysis, and common label/value structures
• match Gutenberg core save output for button and accordion families, including runtime-button attr filtering, style/attribute ordering, accordion roles, and heading icons
• add lower-churn parity assertions for inline style declaration coverage

Verification

• composer test from php-transformer passed (194 parity fixtures)
• SSI one-fixture Lab run ssi-onepager-coffee-integrated-20260703e: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, unacceptable_finding_count=0, editor_valid_block_rate=1
• Coffee summary artifact: https://homeboy-artifacts-tunnel.dev.chubes.net/eb8b8441-90c4-4663-9a29-9b533e7d1a1b/02b8fd5f-d0b9-4aaf-9776-4994d62247fb-summary.json
• SSI 10-nonprofit Lab run ssi-nonprofit-accordion-save-20260703a: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, editor_valid_block_rate=1
• SSI five-site Lab run ssi-five-simple-sites-button-accordion-20260703a: improved from 3/5 to 4/5 passing, with editor_invalid_count=0, invalid_block_count=0, editor_valid_block_rate=1, native_conversion_rate=0.9813
• Five-site summary artifact: https://homeboy-artifacts-tunnel.dev.chubes.net/e2169efe-6b6a-4d08-becb-c358569e620d/2cae4fc1-0500-4d74-8631-73f014e98e3f-summary.json

AI assistance

• AI assistance: Yes
• Tool(s): GPT-5.5 via OpenCode, with parallel coding subagents
• Used for: Integrated PHP transformer fixes/refactors, ran local and Lab verification, analyzed fixture-matrix evidence, and drafted this PR description. Chris remains responsible for review and final changes.

[chubes4]

Restaurant fixture follow-up is included in commit d743887.

Verification:

• composer test from php-transformer
• SSI one-fixture Lab run ssi-restaurant-integrated-20260703c
• Lab result: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, unacceptable_finding_count=0, editor_valid_block_rate=1, native_conversion_rate=0.9548
• Summary artifact: https://homeboy-artifacts-tunnel.dev.chubes.net/cb8b9fb4-8570-47f2-9491-17e82ac719f7/22d1fedb-9885-4e58-a6d1-f63b8d49dd62-summary.json

Remaining acceptable findings are mostly inline SVG/core-html preservation, one script runtime island, one SSI diagnostic blind spot, and visual parity mismatch at 16.58% overlap mismatch.

[chubes4]

Added generic business-hours/contact structure follow-up in commit aae02f7.

What changed:

• business-hours day/time rows now convert to editable label/value core/columns instead of flattened paragraphs
• contact-only tel:/mailto: clusters with weak links signals no longer become core/navigation; explicit nav/menu contexts still do
• added focused parity fixtures for both paths

Verification:

• composer test from php-transformer passes (189 parity fixtures)
• SSI one-fixture Lab run ssi-restaurant-label-contact-20260703a
• Lab result: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, unacceptable_finding_count=0, editor_valid_block_rate=1, native_conversion_rate=0.9581
• Summary artifact: https://homeboy-artifacts-tunnel.dev.chubes.net/c1484d4e-a878-45ed-a766-f0605572656f/063be762-04a7-4b54-8671-a55396c2eee6-summary.json

[chubes4]

Ran the next fixture candidate, 8-local-service-business, against the current branch.

Verification:

• SSI one-fixture Lab run ssi-local-service-integrated-20260703a
• Lab result: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, unacceptable_finding_count=0, editor_valid_block_rate=1, native_conversion_rate=0.9005
• Summary artifact: https://homeboy-artifacts-tunnel.dev.chubes.net/c1484d4e-a878-45ed-a766-f0605572656f/063be762-04a7-4b54-8671-a55396c2eee6-summary.json

Next generic targets from this fixture are logo/SVG link decomposition, inline SVG icon handling, and form materialization (form#contact-form) rather than block validity.

[chubes4]

Added two more generic PHP-transformer cycles and verified them through local tests + Lab.

Decorative SVG labels:

• Commit 62f9606 normalizes decorative SVG/icons out of button/logo RichText labels while preserving standalone SVG artwork as core/html.
• Added coverage for logo SVG+text anchors, tel/mail CTA icon labels, and icon-only accessible buttons.
• Local tests: composer test passed with 191 parity fixtures.
• Local-service Lab run ssi-local-service-svg-labels-20260703b: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, editor_valid_block_rate=1, native_conversion_rate=0.9092.
• Summary artifact: https://homeboy-artifacts-tunnel.dev.chubes.net/5104bb8b-534b-471e-a207-f6f18593040c/59497744-d7b8-4f5e-9e0a-13d64e64a46c-summary.json

Form fallback contract:

• Commit 7f45a0f enriches provider-neutral html_form_fallback metadata: form identity/attrs, explicit control order, cleaned labels, submit text, validation/default state, select placeholder options, and adjacent success-panel metadata.
• Block output remains preserved fallback; this gives SSI/downstream materializers a stable form contract without pretending arbitrary forms are native core blocks.
• Local tests: composer test passed with 192 parity fixtures.
• Event/conference Lab run ssi-event-conference-form-contract-20260703a: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, editor_valid_block_rate=1, native_conversion_rate=1.
• Summary artifact: https://homeboy-artifacts-tunnel.dev.chubes.net/summary.json

Remaining generic opportunities from the event fixture: schedule/session patterns, speaker/ticket cards, FAQ accordion-to-native details, and better SVG/icon diagnostics/tokenization.

[chubes4]

Added another generic PHP-transformer cycle for event/session structure.

Schedule/label-value rows:

• Commit 9e93898 recognizes conservative two-part label/value rows (row, pair, session, schedule, detail, etc.) and emits valid core/columns / core/column blocks instead of flattening time/title or label/value text.
• Reuses the proven business-hours row serialization path and keeps interactive tabs/shells untouched.
• Added parity coverage in html-schedule-label-value-rows.json for session time/title rows and generic detail pairs.

Verification:

• Local: php -l src/HtmlToBlocks/HtmlTransformer.php passed.
• Local: composer test passed with 193 parity fixtures.
• Event/conference Lab run ssi-event-conference-label-value-20260703a: failed_fixture_count=0, editor_invalid_count=0, invalid_block_count=0, editor_valid_block_rate=1, native_conversion_rate=1.

Remaining good next targets: FAQ button/answer accordion mapping to native details/accordion where safe, speaker/ticket pricing-card decomposition, and SVG icon diagnostics/tokenization.

[chubes4]

Update pushed: fc4ba83 Preserve runtime targets in static imports.

Verification:

• php php-transformer/tests/contract/run.php passed.
• php php-transformer/tests/parity/run.php passed: 198 fixtures.
• git diff --check passed.

Also updated 30-cursed-pangolin-fanwiki/fixture.json to classify it as a high-risk runtime-heavy stress fixture instead of low-complexity docs/blog.

Fresh corpus note: the stale local corpus worktree was missing manifests; origin/trunk has 77/77 fixture manifests. A fresh full-corpus Lab rerun was attempted against an origin/trunk snapshot, but Homeboy returned internal.json_error while parsing the runner daemon response before a matrix summary could be retrieved.

AI assistance:

• AI assistance: Yes
• Tool(s): openai/gpt-5.5 via OpenCode
• Used for: Runtime-target preservation implementation, fixture-matrix evidence analysis, and verification orchestration.