{
  "sha": "9b51f95ef609a219e211e37b082cd2e6913190e0",
  "model": "openai/gpt-5.6-luna",
  "effort": "high",
  "found_per_pass": {
    "agent": 8
  },
  "findings": [
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 91,
      "end_line": 91,
      "label": "bug",
      "severity": "high",
      "explanation": "clear_partials` deletes every file in `incoming` without coordinating with active writers, so a live fetch can lose its temporary path and fail when `BlobWriter::commit` renames it.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 119,
      "end_line": 119,
      "label": "bug",
      "severity": "high",
      "explanation": "The index snapshot is not synchronized with fetch commits; a sweep can see a newly committed but not-yet-linked blob as unreferenced, delete it, and leave the subsequent index entry pointing to a…\n\nThe index snapshot is not synchronized with fetch commits; a sweep can see a newly committed but not-yet-linked blob as unreferenced, delete it, and leave the subsequent index entry pointing to a missing blob.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/routes/admin.rs",
      "start_line": 76,
      "end_line": 76,
      "label": "bug",
      "severity": "high",
      "explanation": "On-demand sweeps bypass the `running` mutex used by periodic sweeps, allowing concurrent sweeps to race while collecting, unlinking blobs, and removing index entries.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/routes/admin.rs",
      "start_line": 76,
      "end_line": 76,
      "label": "performance",
      "severity": "high",
      "explanation": "The handler performs a potentially huge recursive filesystem walk synchronously on a Tokio worker, which can block cache requests and health probes while sweeping a large store.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 140,
      "end_line": 140,
      "label": "bug",
      "severity": "high",
      "explanation": "forget` runs during dry runs even though selected blobs are not removed, so `?dry_run=true` deletes their index entries and can cause a later sweep to delete those still-present blobs.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 126,
      "end_line": 126,
      "label": "bug",
      "severity": "medium",
      "explanation": "When `remove_file` fails, execution still counts the candidate as removed and adds it to `gone`, so the response and metrics report reclaimed bytes while the blob remains and its index entries are…\n\nWhen `remove_file` fails, execution still counts the candidate as removed and adds it to `gone`, so the response and metrics report reclaimed bytes while the blob remains and its index entries are then deleted.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/metrics.rs",
      "start_line": 94,
      "end_line": 94,
      "label": "bug",
      "severity": "medium",
      "explanation": "values()` supplies reclaimed bytes in the slot declared for removed blobs and blobs in the slot declared for bytes, so Prometheus exposes both sweep counters under the wrong names.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/main.rs",
      "start_line": 108,
      "end_line": 108,
      "label": "bug",
      "severity": "low",
      "explanation": "tokio::time::interval` fires its first tick immediately, contrary to the stated one-interval delay, so every restart sweeps the cache immediately instead of waiting for `CAIRN_SWEEP_INTERVAL`.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    }
  ]
}