submitForm now links member_id whenever submitter_email matches a space
member (including raw anonymous public submissions) -- owner-chosen
product decision, with the attribution tradeoff documented inline so a
future audit does not revert it. New pure escapeLike (ILIKE-safe email
match; '_' in addresses is literal) + pickMemberForEmail (deterministic
earliest-joined on duplicates) + 5 tests (suite 464). Shared
linkSubmissionsByEmail helper for reuse; updated the now-superseded
verified-only comment.
Moheeb Zara
ea521de342