gstack Upgrade

_AUTO=""
[ "${GSTACK_AUTO_UPGRADE:-}" = "1" ] && _AUTO="true"
[ -z "$_AUTO" ] && _AUTO=$(~/.claude/skills/gstack/bin/gstack-config get auto_upgrade 2>/dev/null || true)
echo "AUTO_UPGRADE=$_AUTO"

~/.claude/skills/gstack/bin/gstack-config set auto_upgrade true

GSTACK_STATE_ROOT=$(~/.claude/skills/gstack/bin/gstack-paths --get GSTACK_STATE_ROOT); : "${GSTACK_STATE_ROOT:?gstack-paths failed; reinstall with ./setup or /gstack-upgrade}"
_SNOOZE_FILE="$GSTACK_STATE_ROOT/update-snoozed"
_REMOTE_VER="{new}"
_CUR_LEVEL=0
if [ -f "$_SNOOZE_FILE" ]; then
  _SNOOZED_VER=$(awk '{print $(1)}' "$_SNOOZE_FILE")
  if [ "$_SNOOZED_VER" = "$_REMOTE_VER" ]; then
    _CUR_LEVEL=$(awk '{print $(2)}' "$_SNOOZE_FILE")
    case "$_CUR_LEVEL" in *[!0-9]*) _CUR_LEVEL=0 ;; esac
  fi
fi
_NEW_LEVEL=$((_CUR_LEVEL + 1))
[ "$_NEW_LEVEL" -gt 3 ] && _NEW_LEVEL=3
echo "$_REMOTE_VER $_NEW_LEVEL $(date +%s)" > "$_SNOOZE_FILE"

~/.claude/skills/gstack/bin/gstack-config set update_check false

if [ -d "$HOME/.claude/skills/gstack/.git" ]; then
  INSTALL_TYPE="global-git"
  INSTALL_DIR="$HOME/.claude/skills/gstack"
elif [ -d "$HOME/.gstack/repos/gstack/.git" ]; then
  INSTALL_TYPE="global-git"
  INSTALL_DIR="$HOME/.gstack/repos/gstack"
elif [ -d ".claude/skills/gstack/.git" ]; then
  INSTALL_TYPE="local-git"
  INSTALL_DIR=".claude/skills/gstack"
elif [ -d ".agents/skills/gstack/.git" ]; then
  INSTALL_TYPE="local-git"
  INSTALL_DIR=".agents/skills/gstack"
elif [ -d ".claude/skills/gstack" ]; then
  INSTALL_TYPE="vendored"
  INSTALL_DIR=".claude/skills/gstack"
elif [ -d "$HOME/.claude/skills/gstack" ]; then
  INSTALL_TYPE="vendored-global"
  INSTALL_DIR="$HOME/.claude/skills/gstack"
elif _SRC=$(~/.claude/skills/gstack/bin/gstack-paths --get GSTACK_STATE_ROOT 2>/dev/null) && _SRC=$(awk -F '\t' '$(1) == "claude" && $(6) != "-" { print $(6); exit }' "$_SRC/installs.tsv" 2>/dev/null) && [ -d "$_SRC/.git" ]; then
  # The install registry names the checkout setup activated for this host (e.g. a ~/gstack clone).
  INSTALL_TYPE="global-git"
  INSTALL_DIR="$_SRC"
else
  echo "ERROR: gstack not found"
  exit 1
fi
INSTALL_DIR=$(cd -- "$INSTALL_DIR" && pwd -P) || { echo "ERROR: cannot enter the gstack install directory" >&2; exit 1; }
echo "Install type: $INSTALL_TYPE at $INSTALL_DIR"

OLD_VERSION=$(cat "${INSTALL_DIR:?INSTALL_DIR is not set: re-run Step 2 and substitute the printed path}/VERSION" 2>/dev/null || echo "unknown")
echo "OLD_VERSION=$OLD_VERSION"

cd -- "${INSTALL_DIR:?INSTALL_DIR is not set: re-run Step 2 and substitute the printed path}" || exit 1
{ [ -f VERSION ] && [ -f setup ] && [ -f bin/gstack-config ] && [ "$(git rev-parse --show-toplevel 2>/dev/null)" = "$(pwd -P)" ]; } || { echo "ERROR: $INSTALL_DIR is not a gstack checkout; nothing was changed. Re-run Step 2." >&2; exit 1; }
# Discard render-footprint dirt: older gbrain-enabled installs rendered
# generated SKILL.md / sections files IN PLACE. They are regenerable (setup
# re-renders to ~/.gstack/render), so discarding is lossless.
git checkout -- 'SKILL.md' '*/SKILL.md' '*/sections/*.md' 2>/dev/null || true
git fetch origin
# Same pre-advance check as the auto-updater: the incoming release's Bun floor.
HOLD=$(. bin/gstack-bun-version.sh 2>/dev/null && gstack_bun_incoming_hold . origin/main) && { echo "BUN_TOO_OLD: $HOLD; nothing was changed" >&2; exit 1; }
PRE_UPGRADE_COMMIT=$(git rev-parse HEAD)
echo "PRE_UPGRADE_COMMIT=$PRE_UPGRADE_COMMIT"
if git pull --ff-only --autostash origin main; then
  if ./setup --refresh-registered; then echo "FF_OK"; else echo "SETUP_FAILED: git update succeeded; stop and inspect setup output (previous commit: $PRE_UPGRADE_COMMIT)" >&2; exit 1; fi
else
  echo "FF_REFUSED"
fi

cd -- "${INSTALL_DIR:?INSTALL_DIR is not set: re-run Step 2 and substitute the printed path}" || exit 1
{ [ -f VERSION ] && [ -f setup ] && [ -f bin/gstack-config ] && [ "$(git rev-parse --show-toplevel 2>/dev/null)" = "$(pwd -P)" ]; } || { echo "ERROR: $INSTALL_DIR is not a gstack checkout; nothing was changed. Re-run Step 2." >&2; exit 1; }
STASH_OUTPUT=$(git stash 2>&1)
git reset --hard origin/main
./setup --refresh-registered

(cd -- "${INSTALL_DIR:?INSTALL_DIR is not set: re-run Step 2 and substitute the printed path}" && [ -f VERSION ] && [ -f setup ] && [ -f bin/gstack-config ]) || { echo "ERROR: INSTALL_DIR=${INSTALL_DIR:-} is not a gstack install; nothing was changed. Re-run Step 2." >&2; exit 1; }
# A stale .bak from a previously crashed upgrade would make the mv below NEST
# the live install inside it and the failure-restore arm would "restore" the
# stale backup. It may also be the only good copy from that crashed run —
# abort and let the human inspect, never delete it silently.
[ -e "$INSTALL_DIR.bak" ] && { echo "ERROR: stale backup exists at $INSTALL_DIR.bak (from a previous failed upgrade?) — inspect it, salvage/remove it, then re-run." >&2; exit 1; }
TMP_DIR=$(mktemp -d "${TMPDIR:-/tmp}/gstack-upgrade.XXXXXX") || { echo "ERROR: mktemp failed — aborting upgrade (install untouched)." >&2; exit 1; }
git clone --depth 1 https://github.com/garrytan/gstack.git "$TMP_DIR/gstack" || { echo "ERROR: clone failed — aborting upgrade (install untouched)." >&2; rm -rf "$TMP_DIR"; exit 1; }
mv "$INSTALL_DIR" "$INSTALL_DIR.bak" || { rm -rf "$TMP_DIR"; exit 1; }
if mv "$TMP_DIR/gstack" "$INSTALL_DIR"; then
  if (cd "$INSTALL_DIR" && ./setup --refresh-registered); then
    rm -rf "$INSTALL_DIR.bak" "$TMP_DIR"
  else
    rm -rf "$INSTALL_DIR"
    mv "$INSTALL_DIR.bak" "$INSTALL_DIR" || { echo "ERROR: restore failed; backup retained." >&2; exit 1; }
    rm -rf "$TMP_DIR"
    echo "ERROR: setup failed; previous install restored." >&2
    exit 1
  fi
else
  mv "$INSTALL_DIR.bak" "$INSTALL_DIR"
  echo "ERROR: swap failed — previous install restored; upgrade aborted." >&2
  rm -rf "$TMP_DIR"
  exit 1
fi

_RESOLVED_PRIMARY=$(cd -- "${INSTALL_DIR:?INSTALL_DIR is not set: re-run Step 2 and substitute the printed path}" && pwd -P) || exit 1
_ROOT=$(git rev-parse --show-toplevel 2>/dev/null)
LOCAL_GSTACK=""
if [ -n "$_ROOT" ] && [ -d "$_ROOT/.claude/skills/gstack" ]; then
  _RESOLVED_LOCAL=$(cd "$_ROOT/.claude/skills/gstack" && pwd -P)
  if [ "$_RESOLVED_LOCAL" != "$_RESOLVED_PRIMARY" ]; then
    LOCAL_GSTACK="$_ROOT/.claude/skills/gstack"
  fi
fi
_TEAM_MODE=$(~/.claude/skills/gstack/bin/gstack-config get team_mode 2>/dev/null || echo "false")
echo "LOCAL_GSTACK=$LOCAL_GSTACK"
echo "TEAM_MODE=$_TEAM_MODE"

(cd -- "${LOCAL_GSTACK:?LOCAL_GSTACK is not set: re-run the detection block above and substitute the printed path}" && [ -f VERSION ] && [ -f setup ] && [ -f bin/gstack-config ]) || { echo "ERROR: LOCAL_GSTACK=${LOCAL_GSTACK:-} is not a gstack copy; nothing was changed." >&2; exit 1; }
_ROOT=${LOCAL_GSTACK%/.claude/skills/gstack}
{ [ "$_ROOT" != "$LOCAL_GSTACK" ] && cd -- "${_ROOT:?}" && [ "$(git rev-parse --show-toplevel 2>/dev/null)" = "$(pwd -P)" ]; } || { echo "ERROR: $LOCAL_GSTACK is not the vendored copy at the root of a git repository; nothing was changed." >&2; exit 1; }
git rm -r --cached .claude/skills/gstack/ 2>/dev/null || true
if ! grep -qF '.claude/skills/gstack/' .gitignore 2>/dev/null; then
  echo '.claude/skills/gstack/' >> .gitignore
fi
rm -rf "$LOCAL_GSTACK"

(cd -- "${INSTALL_DIR:?INSTALL_DIR is not set: re-run Step 2 and substitute the printed path}" && [ -f VERSION ] && [ -f setup ] && [ -f bin/gstack-config ]) || { echo "ERROR: INSTALL_DIR=${INSTALL_DIR:-} is not a gstack install; nothing was changed." >&2; exit 1; }
(cd -- "${LOCAL_GSTACK:?LOCAL_GSTACK is not set: re-run the detection block above and substitute the printed path}" && [ -f VERSION ] && [ -f setup ] && [ -f bin/gstack-config ]) || { echo "ERROR: LOCAL_GSTACK=${LOCAL_GSTACK:-} is not a gstack copy; nothing was changed." >&2; exit 1; }
[ -e "$LOCAL_GSTACK.bak" ] && { echo "ERROR: stale vendored backup; inspect it before retrying." >&2; exit 1; }
mv "$LOCAL_GSTACK" "$LOCAL_GSTACK.bak" || exit 1
if cp -Rf "$INSTALL_DIR" "$LOCAL_GSTACK" && rm -rf "$LOCAL_GSTACK/.git" && (cd "$LOCAL_GSTACK" && ./setup --refresh-registered); then
  rm -rf "$LOCAL_GSTACK.bak"
  echo "LOCAL_SYNC_OK"
else
  rm -rf "$LOCAL_GSTACK"
  mv "$LOCAL_GSTACK.bak" "$LOCAL_GSTACK" || { echo "ERROR: restore failed; backup retained." >&2; exit 1; }
  echo "ERROR: sync failed; previous vendored copy restored." >&2
  exit 1
fi