update

config/shared/bin/wt

@@ -0,0 +1,190 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+########################################
+# Utilities
+########################################
+
+fail() {
+  echo "Error: $1" >&2
+  exit 1
+}
+
+ensure_repo() {
+  git rev-parse --is-inside-work-tree >/dev/null 2>&1 ||
+    fail "Not inside a git repository"
+}
+
+repo_root() {
+  git rev-parse --show-toplevel
+}
+
+detect_base() {
+  if git show-ref --verify --quiet refs/heads/main; then
+    echo "main"
+  elif git show-ref --verify --quiet refs/heads/master; then
+    echo "master"
+  else
+    git branch --show-current
+  fi
+}
+
+ensure_clean() {
+  git diff --quiet || fail "Working tree is dirty"
+  git diff --cached --quiet || fail "Index is dirty"
+}
+
+########################################
+# Core Paths
+########################################
+
+ROOT=$(repo_root)
+WT_DIR="$ROOT/.worktrees"
+
+########################################
+# Commands
+########################################
+
+cmd_new() {
+  local name="$1"
+  local base="${2:-$(detect_base)}"
+  local path="$WT_DIR/$name"
+
+  [ -d "$path" ] && fail "Worktree directory already exists"
+  git show-ref --verify --quiet "refs/heads/$name" &&
+    fail "Branch '$name' already exists"
+
+  mkdir -p "$WT_DIR"
+
+  git worktree add -b "$name" "$path" "$base"
+
+  echo "Created worktree:"
+  echo "  branch: $name"
+  echo "  path:   $path"
+}
+
+cmd_list() {
+  git worktree list
+}
+
+cmd_path() {
+  echo "$WT_DIR/$1"
+}
+
+cmd_rm() {
+  local name="$1"
+  local path="$WT_DIR/$name"
+
+  [ -d "$path" ] || fail "Worktree not found"
+
+  git worktree remove "$path"
+  git branch -D "$name" >/dev/null 2>&1 || true
+
+  echo "Removed worktree '$name'"
+}
+
+cmd_finish() {
+  local name="$1"
+  shift
+  local keep_worktree=0
+  local path="$WT_DIR/$name"
+  local base
+
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+      --keep-worktree)
+        keep_worktree=1
+        shift
+        ;;
+      *)
+        fail "Unknown option for finish: $1"
+        ;;
+    esac
+  done
+
+  [ -d "$path" ] || fail "Worktree not found"
+  git show-ref --verify --quiet "refs/heads/$name" ||
+    fail "Branch '$name' not found"
+
+  base=$(detect_base)
+
+  echo "Base branch: $base"
+  echo "Feature branch: $name"
+
+  git checkout "$base" >/dev/null
+  ensure_clean
+
+  if ! git merge --squash "$name"; then
+    echo
+    echo "Resolve conflicts, then run:"
+    echo "  git commit"
+    echo "  wt rm $name"
+    exit 1
+  fi
+
+  git commit -m "$name"
+
+  if [ -d "$path" ] && [ "$keep_worktree" -eq 0 ]; then
+    if ! git worktree remove "$path"; then
+      git worktree remove --force "$path" || fail "Failed to remove worktree '$name'"
+    fi
+  fi
+
+  if [ "$keep_worktree" -eq 0 ]; then
+    git branch -D "$name"
+  fi
+
+  if [ "$keep_worktree" -eq 1 ]; then
+    echo "Merged (squash) into '$base' and kept worktree '$path'"
+  else
+    echo "Merged (squash) and removed '$name'"
+  fi
+}
+
+cmd_prune() {
+  git worktree prune
+  echo "Pruned stale worktree metadata"
+}
+
+########################################
+# Entry
+########################################
+
+ensure_repo
+
+case "${1:-}" in
+new)
+  [ $# -lt 2 ] && fail "Usage: wt new <name> [base]"
+  cmd_new "$2" "${3:-}"
+  ;;
+list)
+  cmd_list
+  ;;
+path)
+  [ $# -lt 2 ] && fail "Usage: wt path <name>"
+  cmd_path "$2"
+  ;;
+finish)
+  [ $# -lt 2 ] && fail "Usage: wt finish <name>"
+  cmd_finish "$2" "${@:3}"
+  ;;
+rm)
+  [ $# -lt 2 ] && fail "Usage: wt rm <name>"
+  cmd_rm "$2"
+  ;;
+prune)
+  cmd_prune
+  ;;
+*)
+  cat <<EOF
+Usage:
+  wt new <name> [base]
+  wt list
+  wt path <name>
+  wt finish <name> [--keep-worktree]
+  wt rm <name>
+  wt prune
+EOF
+  exit 1
+  ;;
+esac