feat(fusion_plating_jobs): late_risk_ratio + active_step_id computes on fp.job

Plan tasks P2.2 + P2.3 batched (both small additive computes on fp.job;
local tests not run between them — entech verifies).

  late_risk_ratio  — stored Float, remaining_planned / minutes_to_deadline.
                     Drives the Manager At-Risk view (Phase 4).
                     Recomputes on step state, duration, deadline changes.

  active_step_id   — non-stored Many2one. Currently in_progress step
                     (lowest sequence if multiple — defensive).
                     Drives JobWorkspace landing focus.

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

fusion_plating/fusion_plating_jobs/tests/__init__.py

@@ -4,3 +4,5 @@ from . import test_fp_job_milestone_cascade
 from . import test_qty_received_propagation
 from . import test_display_wo_name
 from . import test_blocker_compute
+from . import test_late_risk_ratio
+from . import test_active_step_id

fusion_plating/fusion_plating_jobs/tests/test_active_step_id.py

@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc. — License OPL-1
+"""Plan task P2.3 — fp.job.active_step_id compute."""
+from odoo.tests.common import TransactionCase, tagged
+
+
+@tagged('-at_install', 'post_install', 'fp_jobs')
+class TestActiveStepId(TransactionCase):
+
+    def setUp(self):
+        super().setUp()
+        self.partner = self.env['res.partner'].create({'name': 'AS'})
+        self.product = self.env['product.product'].create({'name': 'AS'})
+        self.job = self.env['fp.job'].create({
+            'name': 'WH/JOB/AS',
+            'partner_id': self.partner.id,
+            'product_id': self.product.id,
+            'qty': 1,
+        })
+
+    def test_no_active_step(self):
+        self.env['fp.job.step'].create({
+            'job_id': self.job.id,
+            'name': 'S1',
+            'sequence': 10,
+            'state': 'ready',
+        })
+        self.job.invalidate_recordset(['active_step_id'])
+        self.assertFalse(self.job.active_step_id.id)
+
+    def test_single_in_progress_step(self):
+        s = self.env['fp.job.step'].create({
+            'job_id': self.job.id,
+            'name': 'S1',
+            'sequence': 10,
+            'state': 'in_progress',
+        })
+        self.job.invalidate_recordset(['active_step_id'])
+        self.assertEqual(self.job.active_step_id.id, s.id)
+
+    def test_multiple_in_progress_picks_lowest_sequence(self):
+        s1 = self.env['fp.job.step'].create({
+            'job_id': self.job.id,
+            'name': 'S1',
+            'sequence': 10,
+            'state': 'in_progress',
+        })
+        self.env['fp.job.step'].create({
+            'job_id': self.job.id,
+            'name': 'S2',
+            'sequence': 20,
+            'state': 'in_progress',
+        })
+        self.job.invalidate_recordset(['active_step_id'])
+        self.assertEqual(self.job.active_step_id.id, s1.id)

fusion_plating/fusion_plating_jobs/tests/test_late_risk_ratio.py

@@ -0,0 +1,65 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc. — License OPL-1
+"""Plan task P2.2 — fp.job.late_risk_ratio compute."""
+from datetime import datetime, timedelta
+
+from odoo.tests.common import TransactionCase, tagged
+
+
+@tagged('-at_install', 'post_install', 'fp_jobs')
+class TestLateRiskRatio(TransactionCase):
+
+    def setUp(self):
+        super().setUp()
+        self.partner = self.env['res.partner'].create({'name': 'LR'})
+        self.product = self.env['product.product'].create({'name': 'LR'})
+
+    def _make_job(self, deadline=None):
+        return self.env['fp.job'].create({
+            'name': 'WH/JOB/LR',
+            'partner_id': self.partner.id,
+            'product_id': self.product.id,
+            'qty': 1,
+            'date_deadline': deadline,
+        })
+
+    def test_no_deadline_zero(self):
+        job = self._make_job(deadline=False)
+        self.assertEqual(job.late_risk_ratio, 0.0)
+
+    def test_no_open_steps_zero(self):
+        job = self._make_job(deadline=datetime.now() + timedelta(hours=8))
+        self.assertEqual(job.late_risk_ratio, 0.0)
+
+    def test_ratio_above_one_when_overrun(self):
+        job = self._make_job(deadline=datetime.now() + timedelta(hours=2))
+        # One step planned for 240 min, only 120 min left → ratio ~ 2.0
+        self.env['fp.job.step'].create({
+            'job_id': job.id,
+            'name': 'Long step',
+            'sequence': 10,
+            'state': 'ready',
+            'duration_expected': 240,
+        })
+        job.invalidate_recordset(['late_risk_ratio'])
+        self.assertGreaterEqual(job.late_risk_ratio, 1.5)
+
+    def test_done_steps_dont_count_toward_remaining(self):
+        job = self._make_job(deadline=datetime.now() + timedelta(hours=4))
+        self.env['fp.job.step'].create({
+            'job_id': job.id,
+            'name': 'Done',
+            'sequence': 10,
+            'state': 'done',
+            'duration_expected': 999,
+        })
+        self.env['fp.job.step'].create({
+            'job_id': job.id,
+            'name': 'Tiny remaining',
+            'sequence': 20,
+            'state': 'ready',
+            'duration_expected': 30,
+        })
+        job.invalidate_recordset(['late_risk_ratio'])
+        # 30 min remaining vs 240 min to deadline → ratio ~ 0.125
+        self.assertLess(job.late_risk_ratio, 0.3)