[DF2] #40: Add bulk download from GovInfo Bulk Data Repository

[v1d0b0t]

Automated pipeline PR for #40

[v1d0b0t]

Implementation Plan

1. Extend src/commands/fetch.ts and src/utils/manifest.ts for govinfo-bulk, --collection, status output, and manifest defaults.
2. Add src/utils/govinfo-bulk-listing.ts to parse GovInfo XML listings, resolve allowed bulkdata URLs, and classify directories/files.
3. Add src/sources/govinfo-bulk.ts to traverse selected collection/congress scopes, download with bounded concurrency, validate XML/ZIP payloads, extract safely, and persist resumable manifest state.
4. Add/update CLI, unit, and integration-style tests for selector validation, listing traversal, resume behavior, and no-key execution path.
5. Update docs/DATA-ACQUISITION-RUNBOOK.md, then run npm run build, npx tsc --noEmit, and the full Vitest suite before push.

[v1d0b0t]

[adversary-review] — REJECTED

See issue #40 for full findings.

[v1d0b0t]

Implementation Plan

1. Update src/utils/manifest.ts to merge govinfo-bulk file/collection state on write so stale snapshots cannot clobber completed-file records from another writer.
2. Update src/sources/govinfo-bulk.ts to stream response bodies to temp files instead of buffering with arrayBuffer().
3. Add a pre-commit race re-check in the govinfo-bulk download path so an already-completed artifact is not overwritten after validation.
4. Keep the existing govinfo-bulk tests green and run the full Vitest suite plus typecheck/build to prove no regressions.
5. Push the fix commit, update the existing PR, and comment on issue Add bulk download from GovInfo Bulk Data Repository #40 with verification + adversary-finding closure.

[v1d0b0t]

[adversary-review] — REJECTED

See issue #40 for full findings.

[v1d0b0t]

Implementation Plan

1. Re-read src/sources/govinfo-bulk.ts and the overlap regression test to isolate the remaining pre-rename race window.
2. Extend the winner-detection helper to check both refreshed manifest state and on-disk final artifact/extraction-root existence immediately before commit.
3. Keep the fix inside the existing downloadBulkArtifact() path so overlapping writers skip instead of overwriting.
4. Re-run the focused govinfo-bulk regression test, then the full Vitest suite, typecheck, and build.
5. Commit, push, update the issue comment, and ready the existing PR for re-review.

[v1d0b0t]

[adversary-review] — APPROVED

See issue #40 for full findings.

[v1d0b0t]

[adversary-review] — APPROVED

See issue #40 for full findings.