Filter applicant list to hide already-voted applications

[Copilot]

When a member votes on an application (accept/reject), that application should no longer appear in their applicant list.

Changes

• firestoreVoteService.ts: Added getVotedApplicationRuts() using collection group query to fetch all RUTs a user has voted on
• Home/index.tsx:
  • Filter applications on load to exclude already-voted items
  • handleVoteSubmitted callback removes application from list immediately and closes modal
• ApplicationDetailsModal.tsx: Propagates onVoteSubmitted callback to VotingPanel

Example

// New service method using collectionGroup for cross-collection query
getVotedApplicationRuts: async (userId: string): Promise<Set<string>> => {
  const votesQuery = query(
    collectionGroup(firestore, "votes"),
    where("userId", "==", userId)
  );
  const votesSnapshot = await getDocs(votesQuery);
  const votedRuts = new Set<string>();
  votesSnapshot.forEach((doc) => {
    votedRuts.add((doc.data() as Vote).applicationRut);
  });
  return votedRuts;
}

Original prompt

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This section details on the original issue you should resolve

<issue_title>Filtro- Lista de postulantes</issue_title>
<issue_description>La idea del filtro consiste que en el momento de aceptar o rechazar una postulación esta no sea visible dentro de la lista visible para el miembro actual.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Filtro- Lista de postulantes #7

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