Refactor author email retrieval in squash-pr.sh

Simplify author email retrieval by removing checks for public email and directly using noreply format.

Author: ludamad

scripts/merge-train/squash-pr.sh

@@ -22,15 +22,8 @@ head_repo=$(echo "$pr_info" | jq -r '.headRepository.nameWithOwner')
 is_fork=$(echo "$pr_info" | jq -r '.isCrossRepository')
 
 # Get the PR author's name and email
-author_info=$(gh api "/users/$pr_author" --jq '{name: .name, email: .email}')
-author_name=$(echo "$author_info" | jq -r '.name // .login')
-# Use GitHub's noreply email format if no public email
-author_email=$(echo "$author_info" | jq -r '.email // empty')
-if [[ -z "$author_email" || "$author_email" == "null" ]]; then
-  # Get user ID for noreply email format
-  user_id=$(gh api "/users/$pr_author" --jq '.id')
-  author_email="${user_id}+${pr_author}@users.noreply.github.com"
-fi
+user_id=$(gh api "/users/$pr_author" --jq '.id')
+author_email="${user_id}+${pr_author}@users.noreply.github.com"
 
 # Create a temporary worktree to do the squashing
 worktree_dir=$(mktemp -d)
@@ -43,7 +36,7 @@ git worktree add "$worktree_dir" HEAD
 cd "$worktree_dir"
 
 # Configure git with author's identity in worktree
-git config user.name "$author_name"
+git config user.name "$pr_author"
 git config user.email "$author_email"
 
 # Save our current branch commits