Name log fields, metrics and the Core Rule Set package for what they are (closes #192)

Log field, metric, action and event names now say what they count
and, for timings, the unit. Package internal/waf is internal/coreruleset.

Model: opus-5-5

internal/discriminator/ratelimits.go

@@ -28,12 +28,14 @@ func (rateLimits) check(_ context.Context, rq *request, now time.Time) *verdict
 		return nil
 	}
 
-	rq.limitPercent, rq.bytesPercent = rq.limitPercentages()
-	rq.line.LimitPercent, rq.line.LimitPercentSetting = rq.limitPercent.logged()
-	rq.line.BytesPercent, rq.line.BytesPercentSetting = rq.bytesPercent.logged()
+	rq.rateLimitPercent, rq.bytesLimitPercent = rq.limitPercentages()
+	rq.line.RateLimitPercent, rq.line.RateLimitPercentSetting =
+		rq.rateLimitPercent.logged()
+	rq.line.BytesLimitPercent, rq.line.BytesLimitPercentSetting =
+		rq.bytesLimitPercent.logged()
 
 	counts, hit, over := rq.h.limiter.Count(rq.h.clientGroup(rq.client), now,
-		rq.limitPercent.percent)
+		rq.rateLimitPercent.percent)
 	rq.line.Counts = counts
 
 	if !over {