syntaxis: 2 low-severity audit findings (wave-1 batch)

[forkwright]

Findings

correctness

• crates/syntaxis/src/lib.rs:284 — info_hash is dropped (None) when constructing the retry QueueItem — hash lost across retries (low)
• crates/syntaxis/src/lib.rs:476 — cancel() silently drops ErgasiaError and returns opaque DispatchFailed (low)

Note

These are batched low/info findings; split any out if it gets prioritized.