feat(jobs): order-level ship-readiness helpers

_fp_order_ship_state + _fp_mark_order_shipped enforce spec D4 ship-together:
the order ships only when every active job on it is awaiting_ship/done.
Shared by the tablet shipping endpoints and /fp/workspace/load.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

fusion_plating/fusion_plating_jobs/tests/__init__.py

@@ -9,3 +9,4 @@ from . import test_active_step_id
 from . import test_autopause_cron
 from . import test_post_shop_states
 from . import test_recipe_cert_suppression
+from . import test_order_ship_state

fusion_plating/fusion_plating_jobs/tests/test_order_ship_state.py

@@ -0,0 +1,74 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+"""Order-level ship-readiness gate (spec D4 — ship together).
+
+Spec: docs/superpowers/specs/2026-05-29-technician-receiving-shipping-tablet-design.md
+"""
+from odoo.tests.common import TransactionCase
+from odoo.exceptions import UserError
+
+
+class TestOrderShipState(TransactionCase):
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.partner = cls.env['res.partner'].create({'name': 'ShipCust'})
+        cls.product = cls.env['product.product'].create({'name': 'ShipWidget'})
+
+    def _make_so(self):
+        return self.env['sale.order'].create({
+            'partner_id': self.partner.id,
+            'order_line': [(0, 0, {
+                'product_id': self.product.id,
+                'product_uom_qty': 1,
+            })],
+        })
+
+    def _make_job(self, so, state):
+        return self.env['fp.job'].create({
+            'partner_id': self.partner.id,
+            'product_id': self.product.id,
+            'qty': 1.0,
+            'state': state,
+            'sale_order_id': so.id,
+        })
+
+    def test_ready_single_awaiting_ship_job(self):
+        so = self._make_so()
+        job = self._make_job(so, 'awaiting_ship')
+        info = job._fp_order_ship_state()
+        self.assertTrue(info['ready'])
+        self.assertEqual(info['awaiting_ship_jobs'], job)
+        self.assertEqual(info['not_ready'], [])
+
+    def test_not_ready_with_unfinished_sibling(self):
+        so = self._make_so()
+        j1 = self._make_job(so, 'awaiting_ship')
+        self._make_job(so, 'in_progress')
+        info = j1._fp_order_ship_state()
+        self.assertFalse(info['ready'])
+        self.assertEqual(len(info['not_ready']), 1)
+
+    def test_done_sibling_does_not_block(self):
+        so = self._make_so()
+        j1 = self._make_job(so, 'awaiting_ship')
+        self._make_job(so, 'done')
+        info = j1._fp_order_ship_state()
+        self.assertTrue(info['ready'])
+
+    def test_mark_order_shipped_marks_all_awaiting(self):
+        so = self._make_so()
+        j1 = self._make_job(so, 'awaiting_ship')
+        j2 = self._make_job(so, 'awaiting_ship')
+        j1._fp_mark_order_shipped()
+        self.assertEqual(j1.state, 'done')
+        self.assertEqual(j2.state, 'done')
+
+    def test_mark_order_shipped_blocks_on_unfinished_sibling(self):
+        so = self._make_so()
+        j1 = self._make_job(so, 'awaiting_ship')
+        self._make_job(so, 'in_progress')
+        with self.assertRaises(UserError):
+            j1._fp_mark_order_shipped()