Carry reviewed lean documentation guidance and evidence into source

[LynxTWO]

Summary

Bring the already reviewed lean documentation guidance into GitHub: reuse one explanation-depth choice, preserve claim meaning and untested hypotheses, and retain obsolete plans as dated history. The installed Anti-Dark-Code core and plugin metadata are byte-identical to the final reviewed bundle, version 2026.10.9-unified.18; this preparation adds no further core changes.

Contribution type

• Shared-core change (previously reviewed documentation updates)
• Documentation or repository maintenance

Evidence and limits

• Existing source-bound trials preserve prior failures, pruning and independent scores. No fresh model trials or new human-comprehension results are inferred.
• Public evidence derivatives redact local machine paths and private participant names while preserving numeric scores, statuses, source hashes and original-record hashes.
• Universal core validation, packaging validation and strict Claude manifest/catalog validation pass. The macOS Python 3.14 suite reports 757 passed, 8 skipped and 703 subtests passed; per-test skip reasons were not captured. Clean Git archives pass distribution/package and host validation. CI platform and mutation-replay results remain separate. Final local installation checks verified the complete bundle in both hosts. The dated packaging evidence records the candidate test results and remaining host/platform limits.
• No tag, release, directory submission, deployment, calibration or installed-plugin update is performed by this draft PR.

Public proposal attestation

N/A: no incoming flow-back proposal.

Efficiency-receipt attestation

N/A: no efficiency receipt or collection.