fix(plating): chatter HTML rendering + workflow stage banner UX

Two fixes from a single SO walkthrough screenshot:

**1. "Current stage" banner**
- Was placed `inside sheet` so it rendered at the BOTTOM of the form
  where users miss it. Moved to `before form/header` (same xpath
  pattern as the Account Hold banner) — now it's the first thing
  visible above the SO header.
- Was still showing "Shipped — awaiting invoice" after the invoice
  was posted because `_compute_workflow_stage` only advanced to
  `complete` when shipped + ALL paid; an unpaid posted invoice left
  the SO stuck on `shipped`. Added an `invoicing` branch: shipped +
  has_posted_invoice → invoicing. Banner invisible-list now also
  includes `invoicing` and `paid`, so the banner only shows for
  in-progress steps.

**2. Chatter messages rendering raw HTML tags as text**
Odoo 19 escapes any string passed to `message_post(body=...)`
unless wrapped in `markupsafe.Markup`. We had ~10 places posting
HTML (`<a href>`, `<b>`, `<br/>`, `<code>`, `<pre>`) that all
showed up as `&lt;a href=...&gt;` literal text in the chatter.

Wrapped each one with `Markup(_(...))` so the tags render. Files
touched:

- fusion_plating_bridge_mrp/models/sale_order.py
  (auto-MO failure code block, "Draft MO created" link,
   "Job assigned to <b>" message)
- fusion_plating_bridge_mrp/models/mrp_production.py
  ("Recipe steps" pre/br block on each WO)
- fusion_plating_bridge_mrp/models/fp_proficiency.py
  (operator promotion announcement)
- fusion_plating_configurator/models/fp_quote_configurator.py
  (SO link, 3D model attached, drawing attached, save to catalog)
- fusion_plating_configurator/models/fp_part_catalog.py
  (3D/drawing change tracking + propagation to linked quotes)
- fusion_plating_portal/models/fp_quote_request.py
  (RFQ → SO link)
- fusion_plating_quality/models/fp_quality_hold.py
  (hold status change)
- fusion_plating_shopfloor/controllers/manager_controller.py
  (worker / tank / manager-takeover assignments)

Verified on entech: SO S00038 stage now reads `invoicing` (banner
hidden), and a freshly posted message shows `<a href>` and `<b>`
as actual link + bold instead of escaped text.

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

fusion_plating/fusion_plating_shopfloor/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating — Shop Floor',
-    'version': '19.0.14.0.0',
+    'version': '19.0.14.1.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Shop-floor tablet stations, QR scanning, bake window enforcer, '
                'first-piece inspection gates.',

fusion_plating/fusion_plating_shopfloor/controllers/manager_controller.py

@@ -5,6 +5,9 @@
 """JSON-RPC endpoints for the Manager Dashboard (client action)."""
 
 import logging
+
+from markupsafe import Markup
+
 from odoo import http
 from odoo.addons.fusion_plating.models.fp_tz import fp_format
 from odoo.http import request
@@ -294,7 +297,7 @@ class FpManagerDashboardController(http.Controller):
             return {'ok': False, 'error': 'Work order not found.'}
         wo.x_fc_assigned_user_id = int(user_id) if user_id else False
         wo.message_post(
-            body=f'Worker assigned: <b>{wo.x_fc_assigned_user_id.name or "Unassigned"}</b>',
+            body=Markup('Worker assigned: <b>%s</b>') % (wo.x_fc_assigned_user_id.name or 'Unassigned'),
         )
         return {'ok': True, 'user_name': wo.x_fc_assigned_user_id.name or ''}
 
@@ -308,7 +311,7 @@ class FpManagerDashboardController(http.Controller):
             return {'ok': False, 'error': 'Work order not found.'}
         wo.x_fc_tank_id = int(tank_id) if tank_id else False
         wo.message_post(
-            body=f'Tank assigned: <b>{wo.x_fc_tank_id.name or "Unassigned"}</b>',
+            body=Markup('Tank assigned: <b>%s</b>') % (wo.x_fc_tank_id.name or 'Unassigned'),
         )
         return {'ok': True, 'tank_name': wo.x_fc_tank_id.name or ''}
 
@@ -324,6 +327,6 @@ class FpManagerDashboardController(http.Controller):
         previous = wo.x_fc_assigned_user_id.name or '—'
         wo.x_fc_assigned_user_id = user.id
         wo.message_post(
-            body=f'Manager takeover: <b>{user.name}</b> replaces {previous}.',
+            body=Markup('Manager takeover: <b>%s</b> replaces %s.') % (user.name, previous),
         )
         return {'ok': True, 'user_name': user.name}