fix(pos): wire buttons in contabilidad, facturacion, inventario, dashboard

- Contabilidad: Nueva Poliza modal + Exportar placeholder
- Facturacion: Nueva Factura modal (sale_id input) + Nota Credito placeholder
- Inventario: click en producto abre detalle con historial
- Dashboard: Ver Detalles navega a paginas relevantes, campana a alertas

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pos/static/js/accounting.js

@@ -388,11 +388,92 @@ const Accounting = (() => {
 
     document.addEventListener('DOMContentLoaded', init);
 
+    // ---- Exportar placeholder ----
+    function exportarContabilidad() {
+        alert('Exportar: proximamente');
+    }
+
+    // ---- Nueva Poliza modal ----
+    function showNewEntryModal() {
+        const overlay = document.getElementById('newEntryModalOverlay');
+        if (!overlay) return;
+        // Set default date to today
+        const dateInput = overlay.querySelector('#entryDate');
+        if (dateInput && !dateInput.value) {
+            dateInput.value = new Date().toISOString().slice(0, 10);
+        }
+        document.getElementById('entryResult').innerHTML = '';
+        overlay.style.display = 'flex';
+    }
+
+    function closeNewEntryModal() {
+        const overlay = document.getElementById('newEntryModalOverlay');
+        if (overlay) overlay.style.display = 'none';
+    }
+
+    function addEntryLine() {
+        const container = document.getElementById('entryLines');
+        if (!container) return;
+        const line = document.createElement('div');
+        line.className = 'entry-line';
+        line.style.cssText = 'display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:var(--space-2);margin-bottom:var(--space-2);align-items:center;';
+        line.innerHTML =
+            '<input type="text" placeholder="Cuenta contable" class="entry-account" style="padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface-2);color:var(--color-text-primary);font-size:var(--text-body-sm);" />' +
+            '<input type="number" placeholder="Debe" class="entry-debit" step="0.01" style="padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface-2);color:var(--color-text-primary);font-size:var(--text-body-sm);" />' +
+            '<input type="number" placeholder="Haber" class="entry-credit" step="0.01" style="padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface-2);color:var(--color-text-primary);font-size:var(--text-body-sm);" />' +
+            '<button class="btn btn--ghost btn--sm" onclick="this.closest(\'.entry-line\').remove()">&times;</button>';
+        container.appendChild(line);
+    }
+
+    async function submitNewEntry() {
+        const date = document.getElementById('entryDate').value;
+        const type = document.getElementById('entryType').value;
+        const description = document.getElementById('entryDescription').value.trim();
+        const resultEl = document.getElementById('entryResult');
+
+        if (!date || !description) {
+            resultEl.innerHTML = '<span style="color:var(--color-error);">Fecha y descripcion son obligatorios.</span>';
+            return;
+        }
+
+        const lines = [];
+        document.querySelectorAll('#entryLines .entry-line').forEach(row => {
+            const account = row.querySelector('.entry-account').value.trim();
+            const debit = parseFloat(row.querySelector('.entry-debit').value) || 0;
+            const credit = parseFloat(row.querySelector('.entry-credit').value) || 0;
+            if (account && (debit || credit)) {
+                lines.push({ account, debit, credit });
+            }
+        });
+
+        if (!lines.length) {
+            resultEl.innerHTML = '<span style="color:var(--color-error);">Agregue al menos una partida.</span>';
+            return;
+        }
+
+        try {
+            await api('/entries', {
+                method: 'POST',
+                body: JSON.stringify({ date, type, description, lines }),
+            });
+            resultEl.innerHTML = '<span style="color:var(--color-success);">Poliza creada exitosamente.</span>';
+            setTimeout(() => closeNewEntryModal(), 1200);
+        } catch (e) {
+            resultEl.innerHTML = '<span style="color:var(--color-error);">Error: ' + e.message + '</span>';
+        }
+    }
+
     // Expose switchTab globally for onclick handlers in HTML
     window.switchTab = switchTab;
+    window.exportarContabilidad = exportarContabilidad;
+    window.showNewEntryModal = showNewEntryModal;
+    window.closeNewEntryModal = closeNewEntryModal;
+    window.addEntryLine = addEntryLine;
+    window.submitNewEntry = submitNewEntry;
 
     return {
         switchTab, loadAging, loadAccountsPayable, loadBalanceSheet,
         loadIncomeStatement, loadCashFlow, loadReconciliation, loadPeriodClose,
+        exportarContabilidad, showNewEntryModal, closeNewEntryModal, addEntryLine, submitNewEntry,
     };
 })();