feat: update git alias

fish/completions/git.fish

@@ -0,0 +1,51 @@
+# ----- Git worktree native completions -----
+
+# 列出分支
+function __git_branches
+    git branch --format="%(refname:short)" 2>/dev/null
+end
+
+# 列出 worktree 路径
+function __git_worktree_paths
+    git worktree list --porcelain 2>/dev/null \
+        | awk '/worktree/ {print $2}'
+end
+
+# -----------------------
+#   Worktree 别名补全
+# -----------------------
+
+# git wtl → worktree list
+complete -f -c git -n '__fish_seen_subcommand_from wtl' -a ''
+
+# git wtp → worktree prune
+complete -f -c git -n '__fish_seen_subcommand_from wtp' -a ''
+
+# git wta → worktree add <path> <branch>
+complete -c git -n '__fish_seen_subcommand_from wta' \
+    -a '(__git_branches)' \
+    -d "Branch to add worktree for"
+
+# git wtb → worktree add -b <newbranch> <path> <base>
+complete -c git -n '__fish_seen_subcommand_from wtb' \
+    -a '(__git_branches)' \
+    -d "Base branch to create new branch from"
+
+# git wtr → worktree remove <path>
+complete -c git -n '__fish_seen_subcommand_from wtr' \
+    -a '(__git_worktree_paths)' \
+    -d "Existing worktree paths"
+
+# ------------------------------
+# 原生 git worktree 补全增强
+# ------------------------------
+
+# git worktree add <path> <branch>
+complete -c git -n '__fish_seen_subcommand_from worktree; and __fish_seen_subcommand_from add' \
+    -a '(__git_branches)' \
+    -d "Branch to checkout"
+
+# git worktree remove <path>
+complete -c git -n '__fish_seen_subcommand_from worktree; and __fish_seen_subcommand_from remove' \
+    -a '(__git_worktree_paths)' \
+    -d "Worktree path"