When launch matches using `id` kitty tries to match against tab id
before matching windows. When there are multiple tabs it's likely to
match a tab before matching a window.
Use `window_id` directly to avoid any possiblity of matching tabs.
This is only needed for `kitty @ launch` for other commands there is
no specific `window_id` field.
It's unclear what the `send-text` alias does at first glance,
so prefixing it with "repl-" both fixes that and helps make it
discoverable via the command prompt's fuzzy matcher.
The `repl` alias also seems too generic a name, the "-new" suffix
should hopefully give a hint that it creates a new window.
