{
  "sha": "9b51f95ef609a219e211e37b082cd2e6913190e0",
  "model": "z-ai/glm-5.2",
  "effort": "high",
  "found_per_pass": {
    "agent": 4
  },
  "findings": [
    {
      "path": "services/proxy/src/routes/admin.rs",
      "start_line": 76,
      "end_line": 76,
      "label": "bug",
      "severity": "critical",
      "explanation": "the on-demand route calls `app.sweeper.sweep(dry_run)` directly, bypassing the `running` Mutex that `Sweeper::run` (sweep.rs:83) acquires; a manual sweep can run concurrently with the background…\n\nthe on-demand route calls `app.sweeper.sweep(dry_run)` directly, bypassing the `running` Mutex that `Sweeper::run` (sweep.rs:83) acquires; a manual sweep can run concurrently with the background sweep, exactly the double-walk the module doc (sweep.rs:10-12) says the lock prevents, so the two remove from a total each other is changing and the store drops below the ceiling.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/metrics.rs",
      "start_line": 94,
      "end_line": 94,
      "label": "bug",
      "severity": "high",
      "explanation": "values()` returns `sweep_bytes_reclaimed` then `sweep_blobs_removed`, but `COUNTERS` (metrics.rs:51-57) lists `sweep_blobs_removed` then `sweep_bytes_reclaimed`; the positional zip in `render`…\n\nvalues()` returns `sweep_bytes_reclaimed` then `sweep_blobs_removed`, but `COUNTERS` (metrics.rs:51-57) lists `sweep_blobs_removed` then `sweep_bytes_reclaimed`; the positional zip in `render` (metrics.rs:107) publishes each counter under the other's name, so `cairn_proxy_sweep_bytes_reclaimed_total` reports blob counts and `cairn_proxy_sweep_blobs_removed_total` reports bytes — the metric `docs/operations.md` tells operators to alert on (operations.md:55) reads wrong.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/routes/admin.rs",
      "start_line": 76,
      "end_line": 76,
      "label": "performance",
      "severity": "medium",
      "explanation": "reclaim` runs the synchronous, blocking filesystem walk in `sweeper.sweep` on the async handler thread; a sweep over a large store \"legitimately takes longer than ten seconds\" (routes/mod.rs:121)…\n\nreclaim` runs the synchronous, blocking filesystem walk in `sweeper.sweep` on the async handler thread; a sweep over a large store \"legitimately takes longer than ten seconds\" (routes/mod.rs:121) and blocks an axum worker for its whole duration, starving other requests sharing that worker.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 90,
      "end_line": 90,
      "label": "performance",
      "severity": "medium",
      "explanation": "sweep` does a full synchronous `readdir`/`read_dir` walk of the blob store while running on the tokio async executor (via `run` in main.rs:116 and the admin route); with 65k leaf directories (as the…\n\nsweep` does a full synchronous `readdir`/`read_dir` walk of the blob store while running on the tokio async executor (via `run` in main.rs:116 and the admin route); with 65k leaf directories (as the module doc itself notes, sweep.rs:15-18) it blocks runtime worker threads instead of using `spawn_blocking`.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    }
  ]
}