~x-ai/grok-latest → A (2:1)

A makes a coherent, tested contract fix: rank-history thread_post_index becomes consistently 0-based like /t/tag/N, drops silent unwrap_or(0) fallbacks for expect, updates API docs/HTML links, and asserts behavior in integration tests. B mainly dumps unwired seed files (root event_log.rs/views.rs with no module wiring, plus deps.edn) alongside useful but thinner deploy scaffolding (Dockerfile/fly.toml), so less proven lasting design impact.