[SafetyMP]

APS now centers on a guided investigation, but repository entry points still described older interfaces and unverified publication. This refresh aligns the repository, contributor guidance, public discovery pages and agent navigation with the deployed experience.

• Rewrite the README and add current vision/user guides plus a complete current/reference/historical documentation map; preserve original research records.
• Update architecture and domain references, community/security/support guidance, issue/PR forms, repository AGENTS.md and schema-validated CITATION.cff.
• Add a useful JavaScript-free project guide, optional agent source index, truthful sharing image/structured metadata and a two-document canonical sitemap. Keep the fixed app routes and static-only boundary.
• Open reference links separately so unsaved investigation state survives. Strengthen documentation/link/index coverage and exact discovery checks.
• Retain all original protected source/fixtures and release checks; pin the measured 257-check runner and explicitly permit only this new candidate branch.

Validation: 314 frontend tests, 257 built-site Chromium checks, strict 12-file static graph validation under both project prefixes, production/fixture integrity, full CFF schema validation, lint/typecheck/build, 143 evidence-verifier tests and readiness tests passed locally. Independent content, discovery/static/readiness, screenshot and release-infrastructure reviews passed. Linux CI run 43647137919 passed, including all 257 browser checks. The unchanged strict predeployment gate accepted the original artifact, all 255 source bindings, 12 built files, and seven independently reviewed Linux captures for tested merge 283f119.

GitHub About description and 17 relevant topics were separately applied and verified. Existing security settings were observed and documented, not broadly changed. The project-owned preview image is included; custom GitHub social-image upload was not performed because the browser session is signed out. Search Console configuration, search indexing/ranking and agent adoption are not claimed.

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