feat: approve priced carts at checkout so customers can pay at once

Every quote waited for an operator before it could be paid, so an order
placed at night waited for the morning. A cart the Site priced is now
approved when the quote is created, through the same server pricing the
operator's approval uses (app/quote_review.py). Orders above
QUOTE_AUTO_MAX_METRES (50 m) and items claiming a discount on art the Site
could not analyse still wait for review; the Kanban shows which quotes were
approved automatically and why the others wait.

The grade is still computed in the browser (roadmap 3.2, 3.9), so the
discount remains a customer-supplied value until the server computes it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_quote_review.py

@@ -0,0 +1,38 @@
+"""Which quotes the Site approves at checkout and which wait for a person."""
+import os
+import unittest
+from unittest import mock
+
+from app.quote_review import review_reason
+
+
+def item(mode='avulsa', metres='2', grade=90, quality='ok', version=2):
+    return {'mode': mode, 'metres': metres, 'grade': grade, 'quality_status': quality,
+            'quality_acknowledged': quality == 'warning', 'production': {'version': version}}
+
+
+class ReviewReasonTest(unittest.TestCase):
+    def reason(self, *items, **env):
+        with mock.patch.dict(os.environ, env):
+            return review_reason({'items': list(items)})
+
+    def test_a_priced_cart_is_approved(self):
+        self.assertIsNone(self.reason(item()))
+        # Accepted resolution warnings and unanalysed art at the full rate too.
+        self.assertIsNone(self.reason(item(quality='warning'), item(grade=0, quality='unverified')))
+
+    def test_large_orders_wait_for_review(self):
+        self.assertIsNone(self.reason(item(metres='30'), item(metres='20')))
+        self.assertEqual(self.reason(item(metres='30'), item(metres='20.1')), 'Pedido acima de 50 m')
+        self.assertEqual(self.reason(item(metres='6'), QUOTE_AUTO_MAX_METRES='5'), 'Pedido acima de 5 m')
+
+    def test_a_discount_the_site_could_not_have_given_waits(self):
+        self.assertEqual(self.reason(item(grade=90, quality='unverified')), 'Nota informada sem análise da arte')
+
+    def test_old_layouts_and_switching_it_off(self):
+        self.assertEqual(self.reason(item(version=1)), 'Montagem antiga')
+        self.assertEqual(self.reason(item(), QUOTE_AUTO_APPROVE='false'), 'Aprovação automática desligada')
+
+
+if __name__ == '__main__':
+    unittest.main()