feat(plating): Sub 4 — Contract Review (optional, QA-005 1:1 PDF)

Per-part contract review record (fp.contract.review) gated by a
customer-level toggle, signed in two sections (QA Assistant → QA
Manager), settings-based signer rosters (no new res.groups), banner on
the part form that auto-dismisses once the first MO for the part hits
confirmed. QA-005 Rev. 0 paper form reproduced 1:1 in a QWeb PDF.

Never blocks MO/SO/WO — review is purely an audit artefact.

Smoke test run on entech: 12 assertions pass including the 25-cell
risk matrix parity with the paper form and 22 KB PDF render.

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

fusion_plating/fusion_plating_quality/models/res_config_settings.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+# Part of the Fusion Plating product family.
+
+from odoo import fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = 'res.config.settings'
+
+    # Mirror the res.company fields so the admin can manage them from
+    # Settings → Fusion Plating → Contract Review without navigating
+    # into the company record.
+    x_fc_qa_assistant_user_ids = fields.Many2many(
+        related='company_id.x_fc_qa_assistant_user_ids',
+        readonly=False,
+        string='QA Assistant Signers',
+    )
+    x_fc_qa_manager_user_ids = fields.Many2many(
+        related='company_id.x_fc_qa_manager_user_ids',
+        readonly=False,
+        string='QA Manager Signers',
+    )