Attribute Performance Workflow Six attribution channels 1. Subject-line effect : did title-pattern match a known audience-notes signal? 2. Topic zeitgeist : was topic trending externally (check trend-scout digests if available)? 3. External share : WebFetch public post URL + Notes mentions — did a larger account restack it? 4. Day-of-week : send-day different from baseline? 5. Length effect : significantly shorter or longer than median? 6. Audience-notes signals : does this post fit a previously-medium-confidence pattern? Guardrails 1. Never fabricate attribution. is a valid output. 2. Confid…