CI: harden heredoc delimiters, add maintainer, fix formatting [skip ci]

.github/workflows/generate-changelog.yml

@@ -116,10 +116,11 @@ jobs:
           CHANGELOG="${CHANGELOG}**Release Type**: ${RELEASE_TYPE}\n"
           CHANGELOG="${CHANGELOG}**Full Changelog**: https://github.com/${{ github.repository }}/compare/${LATEST_TAG:-initial}...v${VERSION}\n"
 
-          # Escape for multiline output (use unique delimiter to avoid collision with commit messages)
-          echo "changelog<<__CHANGELOG_HEREDOC_DELIMITER__" >> $GITHUB_OUTPUT
+          # Escape for multiline output (random delimiter prevents collision with commit messages)
+          DELIMITER="CHANGELOG_$(openssl rand -hex 16)"
+          echo "changelog<<${DELIMITER}" >> $GITHUB_OUTPUT
           echo -e "$CHANGELOG" >> $GITHUB_OUTPUT
-          echo "__CHANGELOG_HEREDOC_DELIMITER__" >> $GITHUB_OUTPUT
+          echo "${DELIMITER}" >> $GITHUB_OUTPUT
           echo "changelog_file=CHANGELOG.md" >> $GITHUB_OUTPUT
 
           # Also write to step summary

.github/workflows/promote-branch.yml

@@ -163,9 +163,10 @@ jobs:
           fi
 
           echo "count=$COMMIT_COUNT" >> $GITHUB_OUTPUT
-          echo "summary<<__COMMITS_DELIM__" >> $GITHUB_OUTPUT
+          DELIM="COMMITS_$(openssl rand -hex 16)"
+          echo "summary<<${DELIM}" >> $GITHUB_OUTPUT
           echo "$COMMIT_SUMMARY" >> $GITHUB_OUTPUT
-          echo "__COMMITS_DELIM__" >> $GITHUB_OUTPUT
+          echo "${DELIM}" >> $GITHUB_OUTPUT
 
       - name: Check for existing PR
         id: check-pr

.github/workflows/release-orchestrator.yml

@@ -133,9 +133,10 @@ jobs:
             echo "commits=" >> $GITHUB_OUTPUT
           else
             echo "has_changes=true" >> $GITHUB_OUTPUT
-            echo "commits<<__COMMITS_DELIM__" >> $GITHUB_OUTPUT
+            DELIM="COMMITS_$(openssl rand -hex 16)"
+            echo "commits<<${DELIM}" >> $GITHUB_OUTPUT
             echo "$COMMITS" >> $GITHUB_OUTPUT
-            echo "__COMMITS_DELIM__" >> $GITHUB_OUTPUT
+            echo "${DELIM}" >> $GITHUB_OUTPUT
           fi
 
   # Version operations