Turn the aggregated store into a ranked, exportable digest of story clusters.
- internal/rank: pure deterministic Score(Signals, cfg.Rank) — recency
(exp half-life decay), cvss/10, kev, epss, velocity (cluster size/age), source
weight, watchlist keyword. Every signal clamped to [0,1]; all weights +
half_life + velocity_norm from config, no literals. recency/velocity are total
(guard half_life<1 and norm<=0). Rank() scores each cluster and stable-sorts
desc, tiebreak freshest. Research 06's two worked examples are the golden-order
test (A ~0.99 strictly above B ~0.13).
- internal/export: per-cluster (story) digest. Headline = freshest member, distinct
sorted outlets, CVEs sorted KEV-first then CVSS. Markdown + deterministic JSON.
- store.DigestClusters: 3-query per-cluster aggregation (clusters by since, member
articles, union of CVE signals) with explicit ORDER BY; per-cluster CVE dedup
via SELECT DISTINCT.
- digest command: --top/--since/--format md|json/--out. Off the stub list.
- Proven live: scrape -> digest --format md and json render correctly, per-cluster
(FortiBleed shows 3 outlets). Suite offline + -race.
One read-only audit agent; 0 Crit/High/Med, golden-order math verified; Low/Nit
fixed in-phase (top<=0 count, pure-fn guards, ORDER BY, headline sanitize, 2-cluster
attach test).
Digest ranks per-cluster (Carter's choice), not per-article.
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