`has_remote()` ran bare `git remote`, which lists every remote name from
any config layer — so a `[remote "origin"]` section inherited from the
user's `~/.gitconfig` (e.g. with only `prune = true`) made every vault
look remote-backed. `git_pull` then ran `git pull --no-rebase`, hit
"no tracking information", and the status bar surfaced "Sync failed".
Parse `git remote -v` and require at least one line with a non-empty URL
column. Mirror the guard on `git_push` so direct callers return
`no_remote` instead of issuing a doomed push. Handle `no_remote`
explicitly in `useAutoSync.performPull` / `pullAndPush` / `handlePushResult`
so the frontend short-circuits the push step and keeps a neutral status.
Fixes: https://github.com/refactoringhq/tolaria/issues/734
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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