fix: rename ambiguous 'Work Center' / 'Work Centres' menus

Two distinct entities were both labelled 'Work Centre' (US/UK spelling
the only differentiator — confusing). Renamed by purpose, model IDs
unchanged so all 12+9 existing cross-refs keep working:

fusion.plating.work.center → 'Production Line'
  Physical shop-layout grouping that owns tanks. Examples: 'Line 1 —
  EN', 'Anodize Line', 'Prep Bay'. Has tank_ids (O2M),
  supported_process_ids (M2M), capacity_per_day. The thing tanks live
  in.

fp.work.centre → 'Routing Station'
  Per-job-step routing entity (post-Sub-11 mrp.workcenter replacement).
  Has 'kind' selection (wet_line / bake / mask / rack / inspect),
  cost_per_hour for fp.job.step rollup, default_bath_id +
  default_tank_id for release-ready validation. The thing a job step
  routes through.

Conceptually a Production Line CONTAINS many Routing Stations (e.g.
'EN Line' production line has wet-line, bake, inspect routing
stations on it).

Updated:
- _description on both models
- string= on the name fields
- list/form/search view strings
- act_window names ('Production Lines' / 'Routing Stations')
- menu items in fp_menu.xml + fp_jobs_menu.xml
- doc comments in both model files explaining the distinction

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

fusion_plating/fusion_plating/models/fp_work_center.py

@@ -7,18 +7,20 @@ from odoo import fields, models
 
 
 class FpWorkCenter(models.Model):
-    """A production line or station inside a facility.
+    """A physical production line inside a facility.
 
-    Examples: "Line 1 - EN", "Anodize Line", "Prep Bay", "Bake Station",
-    "Inspection Booth", "Shipping Dock". Work centers group tanks and
-    provide scheduling capacity.
+    Examples: "Line 1 — EN", "Anodize Line", "Prep Bay", "Bake Station",
+    "Inspection Booth", "Shipping Dock". Production lines group tanks
+    and provide daily-capacity scheduling. This is the SHOP-LAYOUT
+    entity — distinct from `fp.work.centre` which is the per-job-step
+    routing station with cost-per-hour rollup.
     """
     _name = 'fusion.plating.work.center'
-    _description = 'Fusion Plating — Work Center'
+    _description = 'Fusion Plating — Production Line'
     _order = 'facility_id, sequence, name'
 
     name = fields.Char(
-        string='Work Center',
+        string='Production Line',
         required=True,
     )
     code = fields.Char(

fusion_plating/fusion_plating/models/fp_work_centre.py

@@ -13,11 +13,23 @@ from odoo import fields, models
 
 
 class FpWorkCentre(models.Model):
+    """Routing station for a job step — replaces mrp.workcenter for
+    plating after the Sub 11 MRP cutout.
+
+    Each routing station has a `kind` (wet_line / bake / mask / rack /
+    inspect / other) that drives release-ready validation on
+    `fp.job.step` (e.g. wet_line requires bath+tank to be set before
+    the step can start). Costable via `cost_per_hour`.
+
+    Distinct from `fusion.plating.work.center` (Production Line),
+    which is the physical shop-layout grouping that owns tanks.
+    A Production Line typically contains many Routing Stations.
+    """
     _name = 'fp.work.centre'
-    _description = 'Plating Work Centre'
+    _description = 'Plating Routing Station'
     _order = 'sequence, code, name'
 
-    name = fields.Char(required=True)
+    name = fields.Char(string='Routing Station', required=True)
     code = fields.Char(required=True, help='Short code used on stickers and reports.')
     sequence = fields.Integer(default=10)
     facility_id = fields.Many2one(