fix: copy git config template on install

AGENTS.md

@@ -0,0 +1,26 @@
+# Repository Guidelines
+
+## Project Structure & Module Organization
+This repository manages macOS dotfiles and bootstrap scripts. Root-level files such as [setup.sh](/Users/d0zingcat/.dotfiles/setup.sh), [Brewfile](/Users/d0zingcat/.dotfiles/Brewfile), [README.md](/Users/d0zingcat/.dotfiles/README.md), and [QUICKSTART.md](/Users/d0zingcat/.dotfiles/QUICKSTART.md) drive installation and recovery. App-specific config lives in `nvim/`, `wezterm/`, `alacritty/`, `ghostty/`, `git/`, `direnv/`, `ssh/`, and `tmux/`. Neovim code is organized under `nvim/lua/config` for core behavior and `nvim/lua/plugins` for plugin specs. `tmux/plugins/tpm` is a Git submodule; treat it as vendored code unless you are intentionally updating TPM.
+
+## Build, Test, and Development Commands
+Use the setup script instead of ad hoc symlink changes:
+
+- `./setup.sh install`: link managed files into `$HOME` and `$HOME/.config`.
+- `./setup.sh check`: verify expected tools, links, and directories.
+- `./setup.sh full-recover`: bootstrap a new machine end to end.
+- `./setup.sh backup`: refresh tracked backup artifacts such as `Brewfile`.
+- `brew bundle install`: install CLI tools and apps from [Brewfile](/Users/d0zingcat/.dotfiles/Brewfile).
+- `tmux/plugins/tpm/tests/test_plugin_installation.sh`: example TPM plugin test entrypoint when working inside the submodule.
+
+## Coding Style & Naming Conventions
+Shell code is written for `zsh`; keep functions small, prefer descriptive names like `cmd_install`, and follow the existing 4-space indentation in [setup.sh](/Users/d0zingcat/.dotfiles/setup.sh). Lua plugin files in `nvim/lua/plugins` use lowercase filenames grouped by concern, for example `python.lua` and `lspconfig.lua`. Keep new config directories lowercase and mirror their target app name. For Python-style checks, [pycodestyle](/Users/d0zingcat/.dotfiles/pycodestyle) ignores `E501`. Neovim tooling references `stylua`, `luacheck`, and `shellcheck`; use them when available before submitting changes.
+
+## Testing Guidelines
+There is no top-level test suite for the dotfiles themselves, so validate changes with `./setup.sh check` and, when relevant, a dry run on a disposable shell session. Automated tests currently live under `tmux/plugins/tpm/tests`; keep test scripts executable and named `test_*.sh`.
+
+## Commit & Pull Request Guidelines
+Recent history favors short imperative subjects, often Conventional Commit style: `feat: add deps`, `refactor(nvim): simplify fold config`, `docs: 更新备份相关文档说明`. Prefer `type: summary` for new work and keep subjects under roughly 72 characters. PRs should describe user-visible config changes, list any manual setup steps, link related issues, and include screenshots only for terminal or editor UI changes.
+
+## Security & Configuration Tips
+Do not commit secrets from `~/.ssh`, `~/.kube`, `.1password`, or local backup outputs. Treat `git/config` and `ssh/example` as templates only: `./setup.sh install` should copy them into place for local editing rather than symlinking machine-specific values back into the repository.

CHECKLIST.md

@@ -38,7 +38,7 @@
 - [ ] **自动** ~/.config/tmux 软链接
 - [ ] **自动** ~/.config/wezterm 软链接
 - [ ] **自动** ~/.config/starship.toml 软链接
-- [ ] **自动** ~/.gitconfig 软链接
+- [ ] **自动** 用 `git/config` 模板覆盖生成 ~/.gitconfig
 - [ ] **自动** 如不存在则用 `ssh/example` 初始化 ~/.ssh/config
 - [ ] **自动** 如可用则创建 ~/.1password/agent.sock 符号链接
 - [ ] **自动** Git 全局配置 (excludesfile, defaultBranch)

MIGRATION_GUIDE.md

@@ -245,7 +245,7 @@ antigen apply
 
 ### 修改 Git 配置
 
-编辑 `~/.dotfiles/git/config` 或直接运行：
+仓库中的 `git/config` 只作为模板使用。机器上的实际配置请直接修改 `~/.gitconfig`：
 
 ```bash
 git config --global user.name "Your Name"

README.md

@@ -176,7 +176,7 @@ figma             # 设计
 
 ### Git 配置模板
 
-`git/config` 使用占位符，首次使用时需要配置：
+`git/config` 是仓库内模板；`./setup.sh install` 会将它复制到 `~/.gitconfig`。首次使用后请在本机副本中填写真实信息：
 
 ```bash
 git config --file ~/.gitconfig user.name "Your Name"

setup.sh

@@ -46,11 +46,6 @@ CONFIG_FILES=(
     ghostty
 )
 
-# Custom file mappings (from -> to)
-CUSTOM_FILES=(
-    "git/config .gitconfig"
-)
-
 # Rustup components
 RUSTUP_COMPONENTS=(
     clippy
@@ -238,20 +233,18 @@ function cmd_install() {
         fi
     done
 
-    # Link custom files
-    print_warning "Linking custom files..."
-    for row in "${CUSTOM_FILES[@]}"; do
-        IFS=' ' read -r from to <<< "$row"
-        if [ -f "$WORKING_DIR/$from" ]; then
-            # Create parent directory if needed
-            local to_dir=$(dirname "$HOME_DIR/$to")
-            mkdir -p "$to_dir"
-            ln -svfn "$WORKING_DIR/$from" "$HOME_DIR/$to"
-            print_success "Linked: $to"
-        else
-            print_warning "Not found: $from"
+    # Install git config from template by copying it into place.
+    local git_config_template="$WORKING_DIR/git/config"
+    local git_config_target="$HOME_DIR/.gitconfig"
+    if [ -f "$git_config_template" ]; then
+        if [ -L "$git_config_target" ]; then
+            rm "$git_config_target"
         fi
-    done
+        cp -f "$git_config_template" "$git_config_target"
+        print_success "Copied git config template to ~/.gitconfig"
+    else
+        print_warning "Not found: git/config"
+    fi
 
     # Install SSH config from template without symlinking it into the repo.
     local ssh_template="$WORKING_DIR/ssh/example"