{
  "sha": "9b51f95ef609a219e211e37b082cd2e6913190e0",
  "model": "z-ai/glm-5.3-flash",
  "effort": "high",
  "found_per_pass": {
    "agent": 9
  },
  "findings": [
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 232,
      "end_line": 232,
      "label": "bug",
      "severity": "critical",
      "explanation": "clear_partials` unlinks every file in `incoming` with no age check, but a download in flight writes its temp file there (`store.rs:201-206` via `cache.rs:131`); the sweep runs while the writer still…\n\nclear_partials` unlinks every file in `incoming` with no age check, but a download in flight writes its temp file there (`store.rs:201-206` via `cache.rs:131`); the sweep runs while the writer still holds the file open, so the bytes go to an unlinked inode and `BlobWriter::commit`'s rename then fails (`store.rs:259`), turning every artifact being fetched at sweep time into a 500 for the client. At minimum it needs the `min_age` grace the blob path has.",
      "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` before `sweep_blobs_removed`, but `COUNTERS` lists `blobs_removed` first (`metrics.rs:51-57`) and `render` zips the two — so…\n\nvalues()` returns `sweep_bytes_reclaimed` before `sweep_blobs_removed`, but `COUNTERS` lists `blobs_removed` first (`metrics.rs:51-57`) and `render` zips the two — so `cairn_proxy_sweep_blobs_removed_total` reports bytes and `cairn_proxy_sweep_bytes_reclaimed_total` reports blob counts, silently corrupting the exact counter `docs/operations.md` tells operators to alert on.",
      "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": "the on-demand route calls `sweeper.sweep(dry_run)` directly, bypassing the `running` mutex that `Sweeper::run` holds (`sweep.rs:82-85`) — so an operator-triggered sweep runs concurrently with the…\n\nthe on-demand route calls `sweeper.sweep(dry_run)` directly, bypassing the `running` mutex that `Sweeper::run` holds (`sweep.rs:82-85`) — so an operator-triggered sweep runs concurrently with the interval sweep, the exact interleaving the module doc says must not happen (\"two of them over one directory would each decide what to remove from a total the other is already changing\").",
      "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(&index, &gone)` runs unconditionally, but in a dry run `gone` was still populated (line 137) with the referenced blobs the ceiling would evict — so `?dry_run=true`, advertised as reporting…\n\nforget(&index, &gone)` runs unconditionally, but in a dry run `gone` was still populated (line 137) with the referenced blobs the ceiling would evict — so `?dry_run=true`, advertised as reporting \"without removing anything\", deletes live index entries for blobs still on disk, causing refetch churn and contradicting the response it just returned.",
      "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 unreferenced-blob rule ignores `min_age` entirely, but a just-committed blob is unreferenced during the commit→`link` window in `cache.rs:151-163`, which spans a full registry HTTP round trip; a…\n\nthe unreferenced-blob rule ignores `min_age` entirely, but a just-committed blob is unreferenced during the commit→`link` window in `cache.rs:151-163`, which spans a full registry HTTP round trip; a sweep landing in that window deletes the blob and the request then fails at `cache.rs:90-97` with the \"blob committed by this request is already missing\" 500.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 136,
      "end_line": 136,
      "label": "bug",
      "severity": "medium",
      "explanation": "removed`/`bytes`/`remaining` are updated even when `fs::remove_file` failed (line 126 only logs), so a permission-denied blob is counted as reclaimed; `remaining` then drops below the ceiling while…\n\nremoved`/`bytes`/`remaining` are updated even when `fs::remove_file` failed (line 126 only logs), so a permission-denied blob is counted as reclaimed; `remaining` then drops below the ceiling while the disk stays full and the sweep stops evicting, and `forget` deletes index entries for blobs that are still present.",
      "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` is a synchronous full-tree walk (readdir + a file read per index entry) invoked inline from the async handler at `admin.rs:76` and from the interval task at `main.rs:116`; on a store the…\n\nsweep` is a synchronous full-tree walk (readdir + a file read per index entry) invoked inline from the async handler at `admin.rs:76` and from the interval task at `main.rs:116`; on a store the module doc itself sizes at 65k directories this blocks a tokio worker for the whole pass — the doc's argument against `tokio::fs` is an argument for `spawn_blocking`, not for inline std calls.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/main.rs",
      "start_line": 108,
      "end_line": 108,
      "label": "bug",
      "severity": "medium",
      "explanation": "the comment claims \"the first tick is one interval away\", but `tokio::time::interval` completes its first tick immediately — so every proxy start sweeps at once, including the startup case the…\n\nthe comment claims \"the first tick is one interval away\", but `tokio::time::interval` completes its first tick immediately — so every proxy start sweeps at once, including the startup case the comment says it prevents and the delete-in-flight-partials bug above on any sibling proxy sharing the volume.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    },
    {
      "path": "services/proxy/src/sweep.rs",
      "start_line": 164,
      "end_line": 164,
      "label": "bug",
      "severity": "low",
      "explanation": "collect` uses `fs::metadata`, which follows symlinks, while the comment above it promises a link is \"counted at the size of the link and not of whatever it points at\" (that needs…\n\ncollect` uses `fs::metadata`, which follows symlinks, while the comment above it promises a link is \"counted at the size of the link and not of whatever it points at\" (that needs `fs::symlink_metadata`); a symlinked blob is counted at its target's size, and a symlinked directory is recursed into, including cycles.",
      "evidence": null,
      "suggested_fix": null,
      "deterministic": false
    }
  ]
}