refactor(scripts): 拆分脚本为 init/ 和 detect/ 子目录，优化 init-llm.sh

scripts/init/init-dev-branch.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -euo pipefail
+
+if [ $# -eq 0 ]; then
+  echo "Usage: $0 <branch-name>"
+  exit 1
+fi
+
+BRANCH_NAME="$1"
+ROOT_DIR=$(git rev-parse --show-toplevel)
+WORKTREES_DIR="$ROOT_DIR/.worktrees"
+
+mkdir -p "$WORKTREES_DIR"
+
+git worktree add -b "$BRANCH_NAME" "$WORKTREES_DIR/$BRANCH_NAME"
+
+echo "Worktree created at $WORKTREES_DIR/$BRANCH_NAME"