feat(xdg): do not store home directory in desktop entry (#32)

* feat: do not store home directory in desktop entry

when `git-dev-open` is installed in `~/.local/bin`, the `.desktop` file can reference the binary name directly. This avoids embedding user-specific home directory paths in dotfiles or repos

* chore: do not hardcode script name

* chore: use binary name instead of full path when the binary is in $PATH

Author: sand4rt

lua/git-dev/xdg.lua

@@ -40,9 +40,14 @@ end
 
 XDG.enable = function(opts)
   utils.overwrite_if_changed(opts.script.path, opts.script.content, utils.o700)
+
+  local script_path = vim.fn.expand(opts.script.path)
+  local binary_name = vim.fn.fnamemodify(script_path, ":t")
+  local exe_path = vim.fn.exepath(binary_name)
+
   local desktop_entry = {
     name = "GitDev",
-    exec = vim.fn.expand(opts.script.path) .. " %u",
+    exec = ((exe_path ~= "" and binary_name) or script_path) .. " %u",
     mime_type = "x-scheme-handler/nvim-gitdev",
   }