Problem: the CSES API token was stored as a separate git credential
entry using `path=api-token`, but many credential helpers (e.g.
`cache`) ignore the `path` field, so the token was lost on
retrieval. The scraper `on_event` callback also called
`git_credential.store` from a `uv.spawn` fast event context,
causing `vim.wait` errors.
Solution: encode the CSES token into the password field as
`password<TAB>token` and decode on retrieval. One credential
entry per platform, no `path` dependency. Wrap `store` calls in
`scraper.lua` with `vim.schedule` to avoid fast event context.
Barrett Ruth
a255fa47a0
