fix: generate release notes from commit range to list contributions for all release types

.github/workflows/release.yml

@@ -96,10 +96,99 @@ jobs:
     runs-on: ubuntu-latest
     needs: pypi-publish
     steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Generate release notes from commit messages
+        run: |
+          python3 - <<'EOF'
+          import json, os, re, subprocess, urllib.request
+
+          tag  = os.environ["TAG_NAME"]
+          repo = os.environ["REPO"]
+          token = os.environ["GH_TOKEN"]
+
+          # Determine previous tag (version-sorted, so patch tags compare correctly)
+          all_tags = subprocess.run(
+              ["git", "tag", "--sort=-version:refname"],
+              capture_output=True, text=True, check=True,
+          ).stdout.strip().splitlines()
+          all_tags = [t for t in all_tags if t]
+
+          try:
+              prev_tag = all_tags[all_tags.index(tag) + 1]
+          except (ValueError, IndexError):
+              prev_tag = None
+
+          log_range = f"{prev_tag}..{tag}" if prev_tag else tag
+          subjects = subprocess.run(
+              ["git", "log", "--format=%s", log_range],
+              capture_output=True, text=True, check=True,
+          ).stdout.strip().splitlines()
+
+          # Extract unique PR numbers preserving order (squash-merge: "(#NNN)")
+          seen, pr_numbers = set(), []
+          for subject in subjects:
+              for num in re.findall(r'\(#(\d+)\)', subject):
+                  if num not in seen:
+                      pr_numbers.append(int(num))
+                      seen.add(num)
+
+          def gh_get(url):
+              req = urllib.request.Request(
+                  url,
+                  headers={"Authorization": f"token {token}", "Accept": "application/vnd.github.v3+json"},
+              )
+              with urllib.request.urlopen(req) as resp:
+                  return json.loads(resp.read())
+
+          # Category config mirrors .github/release.yml
+          label_to_category = {
+              "enhancement": "New Features 🎉",
+              "breaking-change": "Breaking Changes 🛠",
+              "bug": "Bug Fix 🐛",
+          }
+          ignore_labels = {"ignore-for-release"}
+          category_order = ["New Features 🎉", "Breaking Changes 🛠", "Bug Fix 🐛", "Other Changes"]
+
+          prs_by_category: dict = {}
+
+          for pr_num in pr_numbers:
+              pr = gh_get(f"https://api.github.com/repos/{repo}/pulls/{pr_num}")
+              labels = {lbl["name"] for lbl in pr.get("labels", [])}
+              if labels & ignore_labels:
+                  continue
+              category = next(
+                  (cat for lbl, cat in label_to_category.items() if lbl in labels),
+                  "Other Changes",
+              )
+              prs_by_category.setdefault(category, []).append(pr)
+
+          lines = ["## What's Changed"]
+          for cat in category_order:
+              if cat not in prs_by_category:
+                  continue
+              lines.append(f"### {cat}")
+              for pr in prs_by_category[cat]:
+                  lines.append(f"* {pr['title']} by @{pr['user']['login']} in {pr['html_url']}")
+
+          if prev_tag:
+              lines += ["", f"**Full Changelog**: https://github.com/{repo}/compare/{prev_tag}...{tag}"]
+
+          notes = "\n".join(lines) + "\n"
+          print(notes)
+          open("release_notes.md", "w").write(notes)
+          EOF
+        env:
+          TAG_NAME: ${{ inputs.custom_version || github.ref_name }}
+          REPO: ${{ github.repository }}
+          GH_TOKEN: ${{ secrets.GH_RELEASE_PAT }}
+
       - name: Publish release on GitHub
         uses: softprops/action-gh-release@v2
         with:
-          generate_release_notes: true
+          body_path: release_notes.md
           tag_name: ${{ inputs.custom_version || github.ref_name }}
         env:
           GITHUB_TOKEN: ${{ secrets.GH_RELEASE_PAT }}