eval_job: pass submission-zip download URL to the report

Build the submissions/<id>.zip resolve URL (same blob URL the gallery links)
and pass it as --download-url so the hosted report shows a "Download submission
ZIP" button. Bump CADGENBENCH_SHA to 0c7690e (report generator with the flag).

Co-authored-by: Cursor <cursoragent@cursor.com>

Dockerfile

@@ -51,7 +51,7 @@ RUN python -m venv "$VIRTUAL_ENV" \
 # rebuild picks up the latest evaluator dependencies (including Open3D for
 # alignment). Lock to a commit SHA at the v1 release for reproducible scores
 # (see space-setup/post-gt-swap.md Stage F).
-ARG CADGENBENCH_SHA=10bf32c
+ARG CADGENBENCH_SHA=0c7690e
 RUN python -m pip install --no-cache-dir \
         "cadgenbench @ git+https://github.com/huggingface/cadgenbench.git@${CADGENBENCH_SHA}"
 

eval_job.py

@@ -100,6 +100,19 @@ def _render_base_url(submission_id: str) -> str:
     return f"{HF_ENDPOINT}/buckets/{RENDER_BUCKET}/resolve/{RENDERS_DIR_IN_REPO}/{submission_id}"
 
 
+def _submission_zip_url(submission_id: str, submissions_repo: str) -> str:
+    """Hub resolve URL of ``submissions/<id>.zip`` (the report's download link).
+
+    Same canonical blob URL the submit handler records as
+    ``submission_blob_url`` and the gallery links, so the report's download
+    button points at the identical artifact.
+    """
+    return (
+        f"{HF_ENDPOINT}/datasets/{submissions_repo}"
+        f"/resolve/main/submissions/{submission_id}.zip"
+    )
+
+
 def _upload_renders_to_bucket(
     run_dir: Path, submission_id: str, token: str,
 ) -> list[str]:
@@ -252,7 +265,11 @@ def main() -> int:
     # the HTML and the first viewer hits an already-warm edge cache).
     _warm_render_cdn(_upload_renders_to_bucket(RUN_DIR, submission_id, token))
     html_path = REPORT_HTML_DIR / f"{submission_id}.html"
-    _run_report(RUN_DIR, html_path, render_base_url=_render_base_url(submission_id))
+    _run_report(
+        RUN_DIR, html_path,
+        render_base_url=_render_base_url(submission_id),
+        download_url=_submission_zip_url(submission_id, submissions_repo),
+    )
     report_json = _build_report_json(RUN_DIR)
     _publish_reports_and_gallery(
         submission_id, html_path, report_json, submissions_repo, token,
@@ -437,7 +454,11 @@ def _run_eval(run_dir: Path, workers: int) -> None:
 
 
 def _run_report(
-    run_dir: Path, html_out: Path, *, render_base_url: str | None = None,
+    run_dir: Path,
+    html_out: Path,
+    *,
+    render_base_url: str | None = None,
+    download_url: str | None = None,
 ) -> None:
     """Invoke ``cadgenbench report single`` for *run_dir*; raise on non-zero.
 
@@ -457,6 +478,8 @@ def _run_report(
             "--gt-base-url", GT_PROXY_BASE_URL,
             "--input-base-url", INPUT_PROXY_BASE_URL,
         ]
+    if download_url:
+        cmd += ["--download-url", download_url]
     print(f"[eval_job] {' '.join(cmd)}", flush=True)
     proc = subprocess.run(
         cmd,