Three root causes prevented filters from reflecting the URL after SvelteKit
client-side navigation:
1. +page.server.ts now resolves sender/receiver display names in parallel with
the document search (UUID validation + silent 404 drop), so initialSenderName
/ initialReceiverName land in server data ready for the UI to use.
2. +page.svelte passes initialSenderName, initialReceiverName, and navKey
(incremented via untrack on every navigation) down to SearchFilterBar.
The untrack() prevents the effect from re-running due to its own navKey write.
3. SearchFilterBar forwards navKey as resetKey to each PersonTypeahead, which
already had a void resetKey guard added in the previous commit.
Together these ensure that after navigating to /documents?senderId=<uuid> the
typeahead shows the person's display name, and clicking × reset clears it.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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