fix(album-upload): use canonical album route in success toast (#1349)
after a successful album upload, the "view album" action in the toast
linked to `/album/${albumSlug}`, but no such route exists — the actual
album route is `/u/[handle]/album/[slug]`. tapping the action 404s
right after a successful publish, which is the worst possible time
for a broken link.
include `artistProfile.handle` (already loaded on mount) in the link.
if the profile fetch failed and we don't have a handle, omit the
action entirely rather than offering a guaranteed-404.
closes #1343
Co-authored-by: Claude Opus 4 (1M context) <noreply@anthropic.com>
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