Declare the canonical parser contract for consumer reconciliation

[erinepshovel-code]

The Python reference parser is executed by consumer contract audits but lacked its own module declaration and field-preservation obligation. It now declares its canonical owner and existing numeric-field behavior beside the implementation. Consumers can reconcile the exact vendored dependency and attach local evidence without taking ownership of the parser.

File plan:

Path	Change and purpose	Risk	Required validation
msdmd/parsers/universal.py	Add MODULE_BUILD/CONTRACTS; refresh ratio counts	Metadata parsing of the helper itself	Existing parser suite and explicit declaration assertions
tests/test_universal_parser.py	Bind existing numeric-field regression to the new contract	Test declaration only	Full unit suite
msdmd/SKILL.md	Explain exact dependency reconciliation and retained canonical ownership	Narrow workflow clarification	Skill compliance/index drift

No grammar, RATIOS placement, or domain semantics change. Validation: 250 unit tests pass; strict skill drift/compliance, 41 plugin adapters, strict RATIOS, llms-build drift, and all 7 RepoLOTO checks pass. Exact candidate head: 05c52aa0999ce102d9cb369434da214e91c5f421. This is the canonical prerequisite for UCNS #226's imported-parser declaration finding.

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-12T04:17:42.783567Z	05c52aa	Manual request

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 43e69d1c10

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[erinepshovel-code]

@codex review

Review exact head 0f0346a. The four findings are fixed: CHECKS calls a no-argument module-level witness also invoked by the unittest suite; boundary fields use declared enum values; COMMENT_MARKERS is included in the public surface; a temporary file carries an observable top-level sentinel and parse_file must not execute it. All 250 unit tests and strict skill drift/compliance/RATIOS gates pass. Parser grammar and RATIOS placement remain unchanged.

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 0f0346ad61

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[erinepshovel-code]

@codex review

Please review exact head 05c52aa0999ce102d9cb369434da214e91c5f421. The sole delta declares the existing RATIO_IDS public constant alongside the other parser exports. All 250 unit tests and strict drift, compliance, and RATIOS gates pass. The implementation and witness are unchanged.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Bravo.

Reviewed commit: 05c52aa099

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