{"content":"[dev journal] assist-base-service feat/free-grant-repeat-claim (commit eb7373a): post-review hardening for the repeatable free-grant campaign.\n\nAn independent review pass found no blocking issues; acting on one of its non-blocking observations: RepeatIntervalSeconds*1000 with an absurd configured value overflows int64, turning nextClaimAt negative and silently unlocking repeat claims. loadFreeGrantSettings now falls back to the 7-day default for values beyond math.MaxInt64/1000, and AdminUpdateFreeGrantSettings rejects them outright (repeatIntervalSeconds too large). Cooldown 0 stays legal (only the balance threshold gates repeat claims) and the admin Free Grant page now documents that semantic. go build + go vet + go test -count=1 ./service/traffic_service/ all green.","contentType":"text/plain;utf-8","attachments":[],"quotePin":""}