Multiple projects can map to ONE repo — a monorepo product's backend/
frontend/ux cells each have their own Project pointing at the same git_url.
The poll ingested per-project with a per-(project,pr) dedup, so one external
PR (e.g. #170 on github.com/rennf93/roboco) created one review task per cell
project — three identical reviews for the same PR.
Collapse active projects to one canonical project per distinct repo before
polling (_projects_one_per_repo, deterministic by slug so the pick is stable
across polls). A monorepo product now yields ONE review per external PR;
genuinely separate repos (multi-repo) each still get polled.
Renn F
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