fix(git): close commit proxy window when buffer outlives editor

lua/git/commit.lua

@@ -19,7 +19,7 @@ function M.commit(opts)
         table.insert(cmd, "--amend")
     end
 
-    local proxy_buf
+    local proxy_buf, proxy_win
     editor.run(cmd, { cwd = worktree }, function(file_path, done)
         local lines = {}
         local f = io.open(file_path, "r")
@@ -30,8 +30,9 @@ function M.commit(opts)
             f:close()
         end
 
-        local buf = git.new_scratch({ name = file_path })
+        local buf, win = git.new_scratch({ name = file_path })
         proxy_buf = buf
+        proxy_win = win
         vim.bo[buf].buftype = "acwrite"
         vim.bo[buf].bufhidden = "wipe"
         vim.bo[buf].modifiable = true
@@ -63,6 +64,9 @@ function M.commit(opts)
         if proxy_buf and vim.api.nvim_buf_is_valid(proxy_buf) then
             vim.api.nvim_buf_delete(proxy_buf, { force = true })
         end
+        if proxy_win and vim.api.nvim_win_is_valid(proxy_win) then
+            vim.api.nvim_win_close(proxy_win, true)
+        end
         if result.code ~= 0 then
             log.error("git commit failed: %s", vim.trim(result.stderr or ""))
             return