compact-labels: rebalance negative history to the per-feed ceiling

The single documented exception to labels.jsonl's append-only rule:
trims feeds over the ceiling (keeping each one's NEWEST negatives),
positives untouched, LABELS.bak written first, idempotent, --dry-run.
Existence justified by the ceiling only bounding the future, while
pre-cap history would otherwise never age out.

1 files changed, 3 insertions, 0 deletions

diff --git a/main.go b/main.go
index efd8118..8a7d54f 100644
--- a/main.go
+++ b/main.go
@@ -40,6 +40,8 @@ func main() {
 		cmd = &cmds.RetrostarCommand{}
 	case "feeds":
 		cmd = &cmds.FeedsCommand{}
+	case "compact-labels":
+		cmd = &cmds.CompactLabelsCommand{}
 	default:
 		fmt.Fprintf(os.Stderr, "Unknown command: %s\n\n", cmdName)
 		printHelp()
@@ -72,6 +74,7 @@ Commands:
     serve           Poll Miniflux, score, serve recommendations RSS (server)
     retrostar       Model-ranked candidates for retroactive starring (cold start)
     feeds           Subscription audit: per-feed volume + star stats (pruning aid)
+    compact-labels  Trim per-feed negative over-representation in labels.jsonl
 
 Usage:
     echo "some title" | fluxrec score --model model.json