Download draft Release assets by numeric ID

[Anionix]

Bug

The manual Linux workflow uses gh release download by tag. Draft releases do not yet expose a git tag, so all three v0.1 runs stopped with release not found before dataset verification.

Fix

Accept a numeric draft Release ID, resolve the named asset through the Releases API, download it with application/octet-stream, retain both SHA checks, and rerun all three lanes.

Observed in Actions runs 29298933494, 29298934722, and 29298936272. Child of #58.

[Anionix]

PR #60 resolved draft lookup by ID, but Actions runs 29299320000, 29299320945, and 29299321908 then received HTTP 403 Resource not accessible by integration. The manual benchmark workflow needs contents: write to read the same-repository draft Release API; normal CI remains contents: read.

[Anionix]

Resolved by PR #61. Manual Actions runs 29299591493, 29299592783, and 29299593853 all downloaded and hash-verified draft asset 476106873; fair, claims, and prompt completed successfully.