roadmap #13: relatorios export PDF + Excel + CSV

ROADMAP item #1.3 #13. exceljs e jspdf ja estavam no package.json
mas as paginas de relatorio so renderizavam UI — zero export.

src/services/reportExport.service.js (novo) com 3 funcoes:
- exportSessionsToPDF: layout HTML→PDF via pdf.service.js (header
  com branding tenant, KPI grid, tabela A4 com striping)
- exportSessionsToXLSX: ExcelJS workbook formatado (titulo + subtitle
  + KPIs inline + tabela com header escuro + alternating row + frozen
  header). Import dinamico — exceljs e pesado, so carrega no click.
- exportSessionsToCSV: vanilla (sem deps) com BOM UTF-8 + separador
  ';' (Excel-friendly em pt-BR)

3 botoes em ambas paginas:
- RelatoriosPage.vue (/therapist/relatorios): icones pi-file-pdf +
  pi-file-excel + pi-table no header (rounded), tooltip, disabled
  quando total=0 ou loading, toast de sucesso/erro
- MelissaRelatorios.vue (Melissa secao): mesma logica, botoes nativos
  .mr-head-btn no padrao Melissa

Filtro de status da tabela e respeitado no export (exporta o que
o usuario esta vendo). KPIs incluidos no PDF e XLSX.

§1.3 UX = 3/4 fechado: #10 (busca global) + #11 (recently viewed) +
#13 (relatorios export). #12 (papel timbrado) bloqueado em codigo
externo do UniaoApp.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/layout/melissa/MelissaRelatorios.vue

@@ -12,12 +12,15 @@
  * isoWeek/isoMonth + Chart.js).
  */
 import { ref, computed, watch, onMounted, onBeforeUnmount } from 'vue';
+import { useToast } from 'primevue/usetoast';
 import { supabase } from '@/lib/supabase/client';
 import { useTenantStore } from '@/stores/tenantStore';
+import { exportSessionsToPDF, exportSessionsToXLSX, exportSessionsToCSV } from '@/services/reportExport.service';
 // Chart/DataTable/Column/Tag/Skeleton: auto via PrimeVueResolver
 
 const emit = defineEmits(['close']);
 const tenantStore = useTenantStore();
+const toast = useToast();
 
 // ── Breakpoints + drawer mobile ────────────────────────
 const drawerOpen = ref(false);
@@ -251,6 +254,66 @@ function patientName(s) {
     return s.patients?.nome_completo || '—';
 }
 
+// ── Export PDF / Excel / CSV ──────────────────────────
+const exportingPdf = ref(false);
+const exportingXlsx = ref(false);
+
+function buildExportParams() {
+    const period = PERIOD_OPTIONS.find(p => p.key === selectedPeriod.value)?.label || '';
+    const normalized = sessionsFiltradas.value.map(s => ({
+        ...s,
+        paciente_nome: s.patients?.nome_completo || '—'
+    }));
+    return {
+        title: 'Relatório de Sessões',
+        subtitle: period,
+        sessions: normalized,
+        kpis: [
+            { label: 'Total', value: total.value },
+            { label: 'Realizadas', value: realizadas.value },
+            { label: 'Faltas', value: faltas.value },
+            { label: 'Canceladas', value: canceladas.value }
+        ],
+        tenantName: tenantStore.activeTenantName || tenantStore.tenant?.name || '',
+        terapeutaNome: tenantStore.user?.full_name || tenantStore.user?.email || ''
+    };
+}
+
+async function exportPdf() {
+    if (exportingPdf.value) return;
+    exportingPdf.value = true;
+    try {
+        const file = await exportSessionsToPDF(buildExportParams());
+        toast.add({ severity: 'success', summary: 'PDF gerado', detail: file, life: 2500 });
+    } catch (e) {
+        toast.add({ severity: 'error', summary: 'Erro ao gerar PDF', detail: e?.message || '', life: 4500 });
+    } finally {
+        exportingPdf.value = false;
+    }
+}
+
+async function exportXlsx() {
+    if (exportingXlsx.value) return;
+    exportingXlsx.value = true;
+    try {
+        const file = await exportSessionsToXLSX(buildExportParams());
+        toast.add({ severity: 'success', summary: 'Excel gerado', detail: file, life: 2500 });
+    } catch (e) {
+        toast.add({ severity: 'error', summary: 'Erro ao gerar Excel', detail: e?.message || '', life: 4500 });
+    } finally {
+        exportingXlsx.value = false;
+    }
+}
+
+function exportCsv() {
+    try {
+        const file = exportSessionsToCSV(buildExportParams());
+        toast.add({ severity: 'success', summary: 'CSV gerado', detail: file, life: 2500 });
+    } catch (e) {
+        toast.add({ severity: 'error', summary: 'Erro ao gerar CSV', detail: e?.message || '', life: 4500 });
+    }
+}
+
 watch(selectedPeriod, () => {
     statusFilter.value = null;
     loadSessions();
@@ -308,6 +371,30 @@ onBeforeUnmount(() => {
                 <span class="mr-page__count">{{ periodLabel }}</span>
             </div>
             <div class="mr-page__actions">
+                <button
+                    class="mr-head-btn"
+                    v-tooltip.bottom="'Exportar PDF'"
+                    :disabled="exportingPdf || loading || total === 0"
+                    @click="exportPdf"
+                >
+                    <i :class="exportingPdf ? 'pi pi-spin pi-spinner' : 'pi pi-file-pdf'" />
+                </button>
+                <button
+                    class="mr-head-btn"
+                    v-tooltip.bottom="'Exportar Excel (.xlsx)'"
+                    :disabled="exportingXlsx || loading || total === 0"
+                    @click="exportXlsx"
+                >
+                    <i :class="exportingXlsx ? 'pi pi-spin pi-spinner' : 'pi pi-file-excel'" />
+                </button>
+                <button
+                    class="mr-head-btn"
+                    v-tooltip.bottom="'Exportar CSV'"
+                    :disabled="loading || total === 0"
+                    @click="exportCsv"
+                >
+                    <i class="pi pi-table" />
+                </button>
                 <button
                     class="mr-head-btn"
                     v-tooltip.bottom="'Recarregar'"