Prefer delivery evidence for historical contact identity

When rendering a historical messaging episode, use the contact identity recorded on the exact accepted provider receipt before a newer profile or form submission. Current profile data can be absent or changed, causing a false “contact missing” state or rejecting valid older messages. Still validate every projected provider message as a direct exchange and scope it by exact issue-linked IDs; receipt identity is not permission to load an entire phone conversation. Applies when: a support timeline is reconstructed from Quo, Twilio, or similar provider events. Keywords: messaging history provider receipt contact identity Quo Twilio issue attribution