docs(msdmd): align public contract with native readers

[erinepshovel-code]

Summary

• repair README's opening MSDMD contract so it no longer claims the shipped collector is block-only
• refresh the README implementation-status/core-idea sections to match the schema-2 native-and-supplemental collector
• update CLAUDE.md, ORG_DISTRIBUTION.md, and runner guidance so assistant/distribution docs no longer contradict skills.json, msdmd/SKILL.md, or merged fix(msdmd): integrate native standards readers and fail-closed coverage #111

Scope

This is a documentation/public-contract repair. It does not add reader behavior. The implemented reader surface remains exactly the existing schema-2 supported subset in msdmd/collect.py/msdmd/readers.py, plus the separate Python module projection runner.

Verification

GitHub checks are required for terminal verification. I could not run the repository's local stdlib suite from this connector-only path.

hmmm

Downstream propagation into Stack and other consumers remains a separate exact-source-pinned refresh after this PR merges.

[chatgpt-codex-connector]

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-02T01:43:29.600295Z	3ea19c0	New commits

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Reviewed commit: 5de6068b58

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Reviewed commit: 3ea19c02c1

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[erinepshovel-code]

Follow-up #115 repaired the remaining post-merge findings and merged at 3024df2b91a2cf7f103dc60640081ec03505335a. Post-merge hygiene and full skill-lib-ci both pass on that exact main commit. Resolving the superseded #114 threads against the repaired source.