Repair Log Sampling, Error Visibility & Signal Gaps

The likely issue is a contract mismatch around log sampling, error visibility, severity mapping, burst suppression, rate limits, correlation, retry noise, exception deduplication, audit-critical events, local fallback logging, and observability evidence. I would first define the invariant: Sampling may reduce volume but must never silently suppress required security, audit, fatal, or actionable error signals; operators must be able to distinguish sampled absence from true absence. Then I would trace the smallest owning boundary, apply or propose a bounded repair/review step, and add deterministic normal, boundary, failure and replay tests. The workflow preserves existing authorization, privacy, security policy, public interfaces, user-visible behavior, and documented operational ownership. If repository/workspace files are available, findings can be mapped to exact paths and focused local validation; with partial evidence, the result stays an explicit diagnosis/evidence map with assumptions and no invented execution claims.