feat(promote-customer-spec): Phase E — final removal of coating + treatment

DELETED entirely (model + view + ACL + data file + menu):
- fp.coating.config (configurator)
- fp.treatment (configurator + seeded data)
- fp.coating.thickness (configurator) — replaced by fp.recipe.thickness in Phase A
- fp.customer.price.list (configurator) — coating-keyed, no replacement

Field deletions:
- sale.order.x_fc_coating_config_id
- sale.order.line.x_fc_coating_config_id + x_fc_treatment_ids
- account.move.line.x_fc_coating_config_id
- fp.part.catalog.x_fc_default_coating_config_id + x_fc_default_treatment_ids
- fp.job.coating_config_id
- fp.pricing.rule.coating_config_id
- fp.quality.point.coating_config_ids
- fp.direct.order.line.coating_config_id + treatment_ids
- fp.sale.description.template.coating_config_id

Refactored:
- fp.quote.configurator.coating_config_id → recipe_id (now points at
  fusion.plating.process.node, the actual recipe). All compute, onchange,
  and matcher logic updated to use recipe directly. Quality inherit
  extends matcher with spec-tier scoring.
- fp.job._fp_create_certificates now reads spec from job.customer_spec_id
  and formats spec_reference as "code Rev rev". Same for thickness
  source — bake fields read from recipe_root (Phase A).
- fp.job.step.button_finish bake-window auto-spawn reads bake settings
  from recipe_root instead of coating.
- fp.certificate auto-fill spec_min_mils/max_mils from recipe (Phase A
  thickness fields) instead of coating.
- jobs/sale_order.py: job creation reads x_fc_customer_spec_id from
  line, drops coating refs and the legacy header-coating fallback.
- Wizards drop coating + treatment fields and refs.
- Configurator views drop x_fc_coating_config_id + x_fc_treatment_ids
  fields entirely. Quality inherits re-anchor on stable fields
  (x_fc_part_catalog_id, x_fc_internal_description, default_process_id,
  process_variant_id, substrate_material) so they keep working.
- Reports drop coating fallback elifs; print recipe / spec.
- Tablet payload drops coating_config_id from job.read fields.

Skipped (deferred to backlog):
- fusion_plating_bridge_mrp — module is uninstalled per Sub 11; source
  files retain coating refs but no runtime impact.
- fusion_plating_portal — circular dep (portal → quality → certs →
  portal). Customer-facing portal coating picker stays for now;
  promote-spec polish is a separate sub-project.

Verification: grep for "coating_config_id|fp.coating.config|
fp.treatment|fp.coating.thickness" in live (non-bridge_mrp,
non-portal, non-script, non-test) Python/XML/CSV returns 3 hits,
all in module / class docstrings explaining Phase E history.

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

fusion_plating/fusion_plating_certificates/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating — Certificates',
-    'version': '19.0.5.6.0',
+    'version': '19.0.6.0.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Certificate registry for CoC, thickness reports, and quality documents.',
     'description': """

fusion_plating/fusion_plating_certificates/models/fp_certificate.py

@@ -286,14 +286,27 @@ class FpCertificate(models.Model):
     def create(self, vals_list):
         SaleOrder = self.env['sale.order']
         for vals in vals_list:
-            # Spec-limit auto-fill (existing behaviour, preserved).
+            # Spec-limit auto-fill — sources thickness range from the
+            # recipe (Phase A moved the thickness fields onto the
+            # recipe root). Falls back gracefully when the SO has no
+            # recipe-bearing line.
             already_set = vals.get('spec_min_mils') or vals.get('spec_max_mils')
             if not already_set and vals.get('sale_order_id'):
                 so = SaleOrder.browse(vals['sale_order_id'])
-                cfg = getattr(so, 'x_fc_coating_config_id', False)
-                if cfg and cfg.thickness_uom == 'mils':
-                    vals.setdefault('spec_min_mils', cfg.thickness_min or 0.0)
-                    vals.setdefault('spec_max_mils', cfg.thickness_max or 0.0)
+                # Look across order_line for the first recipe with a
+                # populated thickness range.
+                first_line = so.order_line[:1] if so.order_line else False
+                recipe = (
+                    first_line.x_fc_process_variant_id
+                    if (first_line
+                        and 'x_fc_process_variant_id' in first_line._fields)
+                    else False
+                )
+                if (recipe
+                        and 'thickness_uom' in recipe._fields
+                        and recipe.thickness_uom == 'mils'):
+                    vals.setdefault('spec_min_mils', recipe.thickness_min or 0.0)
+                    vals.setdefault('spec_max_mils', recipe.thickness_max or 0.0)
             # Defer naming: let the record exist so the mixin can write
             # name via raw SQL, then fall back to the legacy sequence if
             # no parent SO is reachable.