feat: 现代化终端体验升级

- 新增包：starship, atuin, direnv, xh, yq, sd, zellij
- 重写 .zshrc：Starship 提示符、Atuin 历史搜索、fzf 键绑定、
  增强别名（eza --icons, ll, la, lt）、shell 选项、WSL 剪贴板
- 新增 starship.toml 配置
- 优化 git config：SSL 限定到内网地址、pull.rebase、
  push.autoSetupRemote、rerere、delta line-numbers

home/.config/starship.toml

@@ -0,0 +1,41 @@
+format = """
+$username\
+$hostname\
+$directory\
+$git_branch\
+$git_status\
+$nodejs\
+$python\
+$go\
+$rust\
+$cmd_duration\
+$line_break\
+$character"""
+
+[character]
+success_symbol = "[❯](bold green)"
+error_symbol = "[❯](bold red)"
+
+[directory]
+truncation_length = 3
+truncation_symbol = "…/"
+
+[git_branch]
+symbol = " "
+
+[git_status]
+format = '([\[$all_status$ahead_behind\]]($style) )'
+
+[cmd_duration]
+min_time = 2000
+format = "[$duration]($style) "
+
+[nodejs]
+format = "[$symbol($version)]($style) "
+detect_extensions = []
+
+[python]
+format = "[$symbol($version)]($style) "
+
+[go]
+format = "[$symbol($version)]($style) "