fix(dashboard): unique static-export aliases and robust config injection

- Two scope members that live outside the scope dir and share a basename
  (e.g. ~/a/core and ~/b/core) collapsed to the same alias, so the second
  member's snapshot deduped away and both switcher entries pointed at the
  first. Disambiguate colliding aliases by growing the path leftward.
- Static-config injection matched the literal '<script type="module"'
  substring, silently no-opping (shipping a dataless site) if Vite changed
  the emitted markup. Match type=module regardless of attribute order/quotes,
  fall back to </head>, and raise instead of failing silently.
- Add a regression test for the same-basename collision.