Initial commit — MarineMaintenance v1.0

Marine maintenance management: work orders with photos, ISM/SWP procedures,
MSDS, inventory, RFQ/purchases, vessel history, bilingual PDF reports.

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

templates/purchase_form.html

@@ -0,0 +1,40 @@
+{% extends 'base.html' %}
+{% block title %}Nueva Compra{% endblock %}
+{% block page_title %}Nueva Compra{% endblock %}
+{% block topbar_actions %}<a href="{{ url_for('purchases') }}" class="btn btn-secondary">← Volver</a>{% endblock %}
+{% block content %}
+<div class="card" style="max-width:600px">
+    <form method="POST">
+        <div class="form-grid">
+            <div class="form-group">
+                <label>Proveedor</label>
+                <select name="supplier_id">
+                    <option value="">-- Sin proveedor --</option>
+                    {% for s in suppliers %}
+                    <option value="{{ s.id }}">{{ s.name }}</option>
+                    {% endfor %}
+                </select>
+            </div>
+            <div class="form-group">
+                <label>Fecha *</label>
+                <input type="date" name="purchase_date" required>
+            </div>
+            <div class="form-group">
+                <label>Número de Factura</label>
+                <input type="text" name="invoice_number">
+            </div>
+            <div class="form-group full">
+                <label>Notas</label>
+                <textarea name="notes"></textarea>
+            </div>
+        </div>
+        <div class="flex gap-3 mt-6">
+            <button type="submit" class="btn btn-primary">💾 Crear y Agregar Ítems</button>
+            <a href="{{ url_for('purchases') }}" class="btn btn-secondary">Cancelar</a>
+        </div>
+    </form>
+</div>
+{% endblock %}
+{% block scripts %}
+<script>document.querySelector('[name=purchase_date]').value = new Date().toISOString().split('T')[0];</script>
+{% endblock %}