Two fixes:
- Bring back savedPosition handling in scrollBehavior so /shop ⇄
/shop/<slug> back-nav restores the previous scroll y.
- Add a route.hash watcher in HomePage that calls scrollIntoView with
smooth behaviour. Vue Router's scrollBehavior alone wasn't reliably
firing for same-route hash navigations, so this catches them
explicitly. Also handles direct /#bundles deep-links via immediate.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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