feat(plating): close compliance gaps 7-9 — NCR + CAPA + discharge + invoice ref

**7a. NCR close gate** (fusion.plating.ncr.action_close)
Block close unless these are filled in:
  • Description (what happened)
  • Containment Actions (immediate response)
  • Root Cause (why it happened)
  • Disposition (use-as-is / rework / scrap / RTV decision)

A closed NCR without these is useless for AS9100 audits — it's
the entire point of an NCR to document what went wrong, why, and
how we responded. Empty-HTML strings like "<p><br></p>" are
detected as empty too.

**7b. CAPA close gate** (fusion.plating.capa.action_close)
Block close unless:
  • Root Cause Analysis filled in
  • Action Plan filled in
  • Verification (date + verifier) recorded
  • Effectiveness Notes filled when CAPA was marked Not Effective

AS9100 §10.2 / Nadcap require evidence of root-cause analysis,
the corrective/preventive action plan, AND that effectiveness
was verified before the loop is closed.

**8. Invoice ref defensive default** (account.move.create)
Auto-fills `ref` from the source SO's client_order_ref or
x_fc_po_number when the invoice is created with invoice_origin set
but no ref. Already populated on the SO confirm path; this catches
manually-created invoices that would otherwise miss it. Customer
AP teams reject invoices that don't quote their PO# back.

**9. Discharge sample close gate** (fusion.plating.discharge.sample.action_close)
Block close unless:
  • Lab Report # set
  • Results Received Date set
  • At least one parameter reading on file
  • Lab certificate/report attached

Without lab evidence the record fails any environmental compliance
audit — the whole point is to document the test was performed and
what the lab said.

**Simulator** (scripts/fp_e2e_workforce.py)
Adds 4 new negative tests (Test 8-11), all wrapped in savepoints:
  ✓ Test 8 : NCR close without RC/containment/disposition → blocked
  ✓ Test 9 : CAPA close without analysis/plan/verification → blocked
  ✓ Test 10: Discharge sample close without lab evidence → blocked
  ✓ Test 11: Invoice ref auto-fills from SO.client_order_ref → asserted

**Final E2E**: 52 PASS / 2 WARN / 0 FAIL out of 54 checks.
Both remaining WARNs are expected (bake-window auto-create,
first-piece gate — coating-driven, this coating doesn't trigger them).

11 negative tests in total now, every gate fires when triggered.

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

fusion_plating/fusion_plating_compliance/models/fp_discharge_sample.py

@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
 # Copyright 2026 Nexa Systems Inc.
 # License OPL-1 (Odoo Proprietary License v1.0)
-from odoo import api, fields, models
+from odoo import _, api, fields, models
+from odoo.exceptions import UserError
 
 
 class FpDischargeSample(models.Model):
@@ -63,4 +64,32 @@ class FpDischargeSample(models.Model):
         self.write({'state': 'escalated'})
 
     def action_close(self):
+        """Block close until lab evidence is on file.
+
+        A closed discharge sample without a lab report ref + at least
+        one parameter reading + (when results are in) a lab cert
+        attachment fails any environmental audit. The whole point
+        of the record is to document the test was performed and what
+        the lab said.
+        """
+        for rec in self:
+            missing = []
+            if not rec.lab_report_ref:
+                missing.append(_('Lab Report #'))
+            if not rec.received_date:
+                missing.append(_('Results Received Date'))
+            if not rec.line_ids:
+                missing.append(_('At least one parameter reading'))
+            if not rec.attachment_ids:
+                missing.append(_('Lab certificate / report attachment'))
+            if missing:
+                raise UserError(_(
+                    'Cannot close discharge sample "%(name)s" — these '
+                    'fields must be filled in first:\n  • %(fields)s\n\n'
+                    'Without lab evidence on file the record fails any '
+                    'environmental compliance audit.'
+                ) % {
+                    'name': rec.name or rec.display_name,
+                    'fields': '\n  • '.join(missing),
+                })
         self.write({'state': 'closed'})