feat(jobs): add fp.job.node.override for per-job opt-in/out decisions

Mirror of fusion.plating.job.node.override from bridge_mrp, but
bound to fp.job. bridge_mrp's version stays alive for legacy MO
flow during the migration. Both coexist.

Adds override_ids One2many to fp.job via _inherit, plus
unique(job_id, node_id) constraint.

Note: spec-suggested _sql_constraints syntax is deprecated in
Odoo 19 ("Model attribute '_sql_constraints' is no longer
supported, please define model.Constraint on the model"). Used
the new class-attribute form: _unique_job_node = models.Constraint(...).
Verified the UNIQUE index is created on the table.

3 new tests: create, uniqueness, one2many backref.

Manifest 19.0.1.1.1 -> 19.0.1.2.0.

Part of: native job model migration (spec 2026-04-25)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_jobs/models/__init__.py

@@ -6,3 +6,4 @@
 # task-by-task in Tasks 2.2 onwards.
 
 from . import fp_job
+from . import fp_job_node_override

fusion_plating/fusion_plating_jobs/models/fp_job.py

@@ -36,3 +36,8 @@ class FpJob(models.Model):
         'fusion.plating.delivery',
         string='Delivery',
     )
+    override_ids = fields.One2many(
+        'fp.job.node.override',
+        'job_id',
+        string='Recipe Overrides',
+    )

fusion_plating/fusion_plating_jobs/models/fp_job_node_override.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+#
+# fp.job.node.override — per-job opt-in/out decisions for opt_in/opt_out
+# recipe nodes. Mirrors fusion.plating.job.node.override from bridge_mrp,
+# but bound to fp.job instead of mrp.production.
+#
+# bridge_mrp keeps its version alive so legacy MO-flow keeps working.
+# Both coexist during the migration period.
+
+from odoo import fields, models
+
+
+class FpJobNodeOverride(models.Model):
+    _name = 'fp.job.node.override'
+    _description = 'Plating Job Recipe Node Override'
+    _order = 'job_id, node_id'
+
+    job_id = fields.Many2one(
+        'fp.job',
+        required=True,
+        ondelete='cascade',
+        index=True,
+    )
+    node_id = fields.Many2one(
+        'fusion.plating.process.node',
+        string='Recipe Node',
+        required=True,
+        domain="[('opt_in_out', 'in', ('opt_in', 'opt_out'))]",
+    )
+    included = fields.Boolean(
+        string='Included',
+        default=True,
+        help='When True, this opt-in/out node is included in step generation.',
+    )
+
+    _unique_job_node = models.Constraint(
+        'unique(job_id, node_id)',
+        'A job can only have one override per recipe node.',
+    )