{
  "sha": "9b51f95ef609a219e211e37b082cd2e6913190e0",
  "model": "minimax/minimax-m3",
  "effort": "high",
  "found_per_pass": {
    "agent": 4
  },
  "findings": [
    {
      "path": "services/proxy/src/metrics.rs",
      "start_line": 88,
      "end_line": 88,
      "label": "bug",
      "severity": "critical",
      "explanation": "values()` reads `sweep_bytes_reclaimed` at index 4 and `sweep_blobs_removed` at index 5, but `COUNTERS` at lines 50-57 has the opposite order (`sweep_blobs_removed_total` first,…\n\nvalues()` reads `sweep_bytes_reclaimed` at index 4 and `sweep_blobs_removed` at index 5, but `COUNTERS` at lines 50-57 has the opposite order (`sweep_blobs_removed_total` first, `sweep_bytes_reclaimed_total` second). The exposition will render blob counts under the bytes-reclaimed metric name and vice versa - exactly the failure mode the comment on lines 30-32 warns about.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 119,
      "end_line": 119,
      "label": "bug",
      "severity": "high",
      "explanation": "!index.contains_key(hex)` removes a blob when no index entry references it, but the cache write order in `store.rs` (`BlobWriter::commit` renames the blob into place, then the route writes the index…\n\n!index.contains_key(hex)` removes a blob when no index entry references it, but the cache write order in `store.rs` (`BlobWriter::commit` renames the blob into place, then the route writes the index entry via `BlobStore::link`) lets a sweep running between those two steps see a blob with no index entry yet and delete it. The trailing `link` then writes a stale entry that forces a guaranteed miss on the next request; the same path also removes the orphan-safety guarantee the comment on lines 117-118 relies on.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 140,
      "end_line": 140,
      "label": "bug",
      "severity": "medium",
      "explanation": "forget(&index, &gone)` runs unconditionally, including on a dry run, and the loop in `forget` only calls `fs::remove_file` (no `dry_run` argument).\n\nA `?dry_run=true` call to `POST /v1/admin/cache/sweep` would still delete index entries for the blobs whose bytes it did not remove, leaving the index pointing at now-removed bytes on a query the operator believed was read-only.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 119,
      "end_line": 119,
      "label": "bug",
      "severity": "medium",
      "explanation": "The age floor (`candidate.age >= self.min_age`) is only applied to the ceiling-driven removal branch, but the second branch (`remaining >= self.max_bytes`) is checked before the first; if the store…\n\nThe age floor (`candidate.age >= self.min_age`) is only applied to the ceiling-driven removal branch, but the second branch (`remaining >= self.max_bytes`) is checked before the first; if the store is already over the ceiling at sweep start, even freshly-fetched blobs that an index entry *does* name are removed as long as `remaining` stays above `max_bytes`, contradicting the docs/operations.md claim that `CAIRN_CACHE_MIN_AGE` is a grace period protecting recent fetches (the grace only protects when the store is *not* over the ceiling at sweep entry).",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    }
  ]
}