feat(patients): fix date bug, convenio dropdown, redesign grupo familiar

- Fix dataNascimento date format error: convert dd/MM/yyyy → yyyy-MM-dd when
  loading EditarPacienteModal so <input type="date"> validates correctly
- Change convênio field from free text to dropdown populated from planos table
- Redesign grupo familiar: search a patient as family member instead of named
  group, with parentesco field (datalist with common options, accepts custom)
- GET /api/pacientes: proper camelCase aliases, LEFT JOINs for grupoFamiliarNome
  and indicadoPorNome, sort parameter support (az/za/convenio/recentes)
- Add startup migrations: ADD COLUMN IF NOT EXISTS for grupofamiliarid,
  grupofamiliarrelacao, indicadorporid on pacientes table
- savePaciente: preserve caller-supplied id instead of overwriting with Math.random
- Add grupoFamiliarRelacao to Paciente type

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/server.js

@@ -728,14 +728,27 @@ app.put('/api/notificacoes/:id/read', async (req, res) => {
 // --- PACIENTES ---
 app.get('/api/pacientes', async (req, res) => {
     try {
-        const { q } = req.query;
+        const { q, sort } = req.query;
+        const orderMap = { az: 'p.nome ASC', za: 'p.nome DESC', convenio: 'p.convenio ASC NULLS LAST, p.nome ASC', recentes: 'p.nome ASC' };
+        const orderBy = orderMap[sort] || 'p.nome ASC';
+        const base = `SELECT p.id, p.nome, p.cpf, p.telefone, p.email,
+            p.ultimotratamento AS "ultimoTratamento",
+            p.convenio, p.datanascimento AS "dataNascimento",
+            p.grupofamiliarid AS "grupoFamiliarId",
+            pf.nome AS "grupoFamiliarNome",
+            p.grupofamiliarrelacao AS "grupoFamiliarRelacao",
+            p.indicadorporid AS "indicadoPorId",
+            pi.nome AS "indicadoPorNome"
+            FROM pacientes p
+            LEFT JOIN pacientes pf ON pf.id = p.grupofamiliarid
+            LEFT JOIN pacientes pi ON pi.id = p.indicadorporid`;
         let text, params;
         if (q && q.trim()) {
             const term = `%${q.trim().toUpperCase()}%`;
-            text = `SELECT * FROM pacientes WHERE UPPER(nome) LIKE $1 OR cpf LIKE $1 ORDER BY nome LIMIT 100`;
+            text = `${base} WHERE UPPER(p.nome) LIKE $1 OR p.cpf LIKE $1 ORDER BY ${orderBy} LIMIT 100`;
             params = [term];
         } else {
-            text = `SELECT * FROM pacientes ORDER BY nome LIMIT 50`;
+            text = `${base} ORDER BY ${orderBy} LIMIT 50`;
             params = [];
         }
         const { rows } = await pool.query(text, params);
@@ -1652,10 +1665,23 @@ async function generateIntelligentNotifications() {
     }
 }
 
+async function runMigrations() {
+    const migrations = [
+        `ALTER TABLE pacientes ADD COLUMN IF NOT EXISTS grupofamiliarid TEXT`,
+        `ALTER TABLE pacientes ADD COLUMN IF NOT EXISTS grupofamiliarrelacao TEXT`,
+        `ALTER TABLE pacientes ADD COLUMN IF NOT EXISTS indicadorporid TEXT`,
+    ];
+    for (const sql of migrations) {
+        try { await pool.query(sql); } catch (e) { console.error('[MIGRATION]', e.message); }
+    }
+    console.log('[MIGRATION] pacientes columns OK');
+}
+
 // Start server after all routes are registered
 app.listen(PORT, '0.0.0.0', async () => {
     console.log(`[SERVER] Running on http://0.0.0.0:${PORT}`);
     await loadGoogleCredsFromDb();
+    await runMigrations();
     generateIntelligentNotifications();
     setInterval(generateIntelligentNotifications, 5 * 60 * 1000);
 });