Fix CI: lint line-length, lockfile detached HEAD, release disk exhaustion

- quality.py:122: split long tuple line to satisfy E501 (146 → ≤120)
- update-lockfile.yml: add branches filter so tag pushes don't trigger
  the workflow (tag checkout is detached HEAD; git push has no target)
- release.yml: split four Docker build steps into parallel jobs (build-gpu,
  build-cpu, build-rocm, build-intel), each with its own runner; previously
  all four ran in one job and exhausted disk after GPU+CPU builds, leaving
  ROCm and Intel cancelled

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

winnow/quality.py

@@ -119,7 +119,10 @@ def assess_quality(
     blur_score = float(cv2.Laplacian(gray, cv2.CV_64F).var())
 
     checks = [
-        (blur_score >= blur_threshold, f"Blurry (laplacian={blur_score:.1f}, threshold={blur_threshold})" if blur_score < blur_threshold else ""),
+        (
+            blur_score >= blur_threshold,
+            f"Blurry (laplacian={blur_score:.1f}, threshold={blur_threshold})" if blur_score < blur_threshold else "",
+        ),
         check_grayscale(img_np),
         check_exposure(img_np),
         check_confidence(confidence, min_confidence),