chore: add branch cleanup settings script

scripts/set-pheaz-delete-branch-on-merge.sh

@@ -0,0 +1,99 @@
+#!/usr/bin/env bash
+# /scripts/set-pheaz-delete-branch-on-merge.sh
+
+ORG="pheaz"
+DESIRED_VALUE="true"
+
+require_command() {
+  if ! command -v "$1" >/dev/null 2>&1; then
+    printf 'Missing required command: %s\n' "$1" >&2
+    return 2
+  fi
+}
+
+main() {
+  require_command gh || return 2
+
+  if ! gh auth status >/dev/null 2>&1; then
+    printf 'GitHub CLI is not authenticated. Run: gh auth login\n' >&2
+    return 2
+  fi
+
+  local scanned=0
+  local skipped=0
+  local unchanged=0
+  local updated=0
+  local failed=0
+
+  local repo
+  local archived
+  local current_value
+  local update_output
+
+  printf 'Organization: %s\n' "$ORG"
+  printf 'Desired delete_branch_on_merge: %s\n\n' "$DESIRED_VALUE"
+
+  while IFS=$'\t' read -r repo archived; do
+    [ -n "$repo" ] || continue
+    scanned=$((scanned + 1))
+
+    if [ "$archived" = "true" ]; then
+      skipped=$((skipped + 1))
+      printf '[SKIP] %-40s archived repository\n' "${ORG}/${repo}"
+      continue
+    fi
+
+    if ! current_value="$(
+      gh api --method GET \
+        "repos/${ORG}/${repo}" \
+        --jq '.delete_branch_on_merge' 2>/dev/null
+    )"; then
+      failed=$((failed + 1))
+      printf '[FAIL] %-40s could not read repository settings\n' \
+        "${ORG}/${repo}" >&2
+      continue
+    fi
+
+    if [ "$current_value" = "$DESIRED_VALUE" ]; then
+      unchanged=$((unchanged + 1))
+      printf '[SAME] %-40s %s\n' "${ORG}/${repo}" "$DESIRED_VALUE"
+      continue
+    fi
+
+    if update_output="$(
+      gh api --method PATCH \
+        "repos/${ORG}/${repo}" \
+        -F delete_branch_on_merge=true \
+        --silent 2>&1
+    )"; then
+      updated=$((updated + 1))
+      printf '[UPDATE] %-38s %s -> %s\n' \
+        "${ORG}/${repo}" "$current_value" "$DESIRED_VALUE"
+    else
+      failed=$((failed + 1))
+      printf '[FAIL] %-40s\n%s\n' \
+        "${ORG}/${repo}" "$update_output" >&2
+    fi
+  done < <(
+    gh api --paginate --method GET \
+      "orgs/${ORG}/repos" \
+      -f per_page=100 \
+      -f type=all \
+      --jq '.[] | select(.fork == false) | [.name, (.archived | tostring)] | @tsv'
+  )
+
+  printf '\nSummary\n'
+  printf '  Non-fork repos scanned: %d\n' "$scanned"
+  printf '  Archived repos skipped: %d\n' "$skipped"
+  printf '  Already configured:     %d\n' "$unchanged"
+  printf '  Updated:                %d\n' "$updated"
+  printf '  Failed:                 %d\n' "$failed"
+
+  if [ "$failed" -gt 0 ]; then
+    return 3
+  fi
+
+  return 0
+}
+
+main "$@"