feat(plating): company-level UoM defaults — F/C, mils/microns, etc.

Different facilities use different measurement systems. North-American
aerospace shops live in °F + mils + gallons + lb; ROW + most metric
shops use °C + microns + litres + kg. Add company-level defaults so
each shop picks its units once; new records inherit them automatically.

**Settings on res.company** (7 Selection fields):
  • x_fc_default_temp_uom            — °F / °C
  • x_fc_default_thickness_uom       — mils / microns / inches / mm
  • x_fc_default_volume_uom          — US gal / litres / Imp gal
  • x_fc_default_mass_uom            — lb / kg / oz / g
  • x_fc_default_pressure_uom        — psi / bar / kPa
  • x_fc_default_current_density_uom — A/ft² (ASF) / A/dm² (ASD)
  • x_fc_default_area_uom            — sq in / sq ft / cm² / m²

All default to North-American aerospace conventions (F, mils, gal, lb,
psi, asf, sq_in) — admins flip them once during onboarding via
Settings → Fusion Plating → Units of Measure.

**Per-record use** (this round)
  • mrp.workorder.x_fc_bake_temp_uom (°F / °C) — defaults from company,
    operator can override per WO if a specific bake needs a different
    unit (rare but allowed).
  • Bake-finish gate error message now reports the actual unit:
    "Bake Temp (°F)" or "Bake Temp (°C)" instead of hard-coded F.
  • Form: Bake Temp + Temp Unit picker side-by-side in the bake group.

**Settings UI** — new "Units of Measure" block on Settings → Fusion
Plating page with help text per unit explaining where each is used.

**Verified end-to-end** (scripts/fp_uom_smoke.py):
  • All 7 defaults populate with NA-aerospace defaults
  • Switching company default to °C makes a NEW WO inherit °C
  • Existing WOs keep their stored °F (no surprise mutation)

**Roadmap (deferred to next round)** — wire the same default-from-company
inheritance to:
  • fp.bake.oven.target_temp (currently no UoM)
  • fp.bake.window.bake_temp (currently no UoM)
  • fp.coating.config.bake_temperature (currently no UoM)
  • fp.tank.volume already has volume_uom; default from company
  • fp.bath.log chemistry readings already use parameter.uom; align
    with company default for new params

The settings + framework are now in place — adding more per-record uom
fields is mechanical from here.

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

fusion_plating/fusion_plating/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating',
-    'version': '19.0.5.1.0',
+    'version': '19.0.5.2.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Core plating / metal finishing ERP: facilities, processes, tanks, baths, jobs, operators.',
     'description': """

fusion_plating/fusion_plating/models/res_company.py

@@ -59,6 +59,70 @@ class ResCompany(models.Model):
         help='Facility used when the context does not specify one (single-site shops).',
     )
 
+    # ----- Unit-of-measure defaults --------------------------------------
+    # Plating shops in different jurisdictions / industries use different
+    # measurement systems. North-American aerospace shops live in °F + mils;
+    # ROW + most industrial shops use °C + microns. Each company picks its
+    # defaults once here; every WO / oven / bath log / thickness reading
+    # inherits the choice. Per-record overrides remain possible.
+    x_fc_default_temp_uom = fields.Selection(
+        [('F', '°F (Fahrenheit)'),
+         ('C', '°C (Celsius)')],
+        string='Temperature Unit',
+        default='F',
+        help='Used for bake temps, oven setpoints, bath temperatures.',
+    )
+    x_fc_default_thickness_uom = fields.Selection(
+        [('mils', 'mils'),
+         ('microns', 'µm (microns)'),
+         ('inches', 'inches'),
+         ('mm', 'mm')],
+        string='Thickness Unit',
+        default='mils',
+        help='Used for coating spec targets and Fischerscope readings.',
+    )
+    x_fc_default_volume_uom = fields.Selection(
+        [('gal', 'US Gallons'),
+         ('L', 'Litres'),
+         ('imp_gal', 'Imperial Gallons')],
+        string='Volume Unit',
+        default='gal',
+        help='Used for bath volumes and chemical addition logs.',
+    )
+    x_fc_default_mass_uom = fields.Selection(
+        [('lb', 'Pounds (lb)'),
+         ('kg', 'Kilograms (kg)'),
+         ('oz', 'Ounces (oz)'),
+         ('g',  'Grams (g)')],
+        string='Mass Unit',
+        default='lb',
+        help='Used for chemical doses, parts weight, waste manifests.',
+    )
+    x_fc_default_pressure_uom = fields.Selection(
+        [('psi', 'PSI'),
+         ('bar', 'bar'),
+         ('kPa', 'kPa')],
+        string='Pressure Unit',
+        default='psi',
+        help='Used for compressed-air pressure, agitation, etc.',
+    )
+    x_fc_default_current_density_uom = fields.Selection(
+        [('asf', 'A/ft² (ASF)'),
+         ('asd', 'A/dm² (ASD)')],
+        string='Current Density Unit',
+        default='asf',
+        help='Used for electrolytic plating bath current density.',
+    )
+    x_fc_default_area_uom = fields.Selection(
+        [('sq_in', 'sq in'),
+         ('sq_ft', 'sq ft'),
+         ('sq_cm', 'cm²'),
+         ('sq_m',  'm²')],
+        string='Area Unit',
+        default='sq_in',
+        help='Used for part surface area, masking area.',
+    )
+
     def _compute_x_fc_facility_count(self):
         for rec in self:
             rec.x_fc_facility_count = len(rec.x_fc_facility_ids)

fusion_plating/fusion_plating/models/res_config_settings.py

@@ -25,3 +25,33 @@ class ResConfigSettings(models.TransientModel):
         readonly=False,
         string='Default Mastery Threshold',
     )
+
+    # ----- Unit-of-measure defaults --------------------------------------
+    x_fc_default_temp_uom = fields.Selection(
+        related='company_id.x_fc_default_temp_uom',
+        readonly=False, string='Temperature Unit',
+    )
+    x_fc_default_thickness_uom = fields.Selection(
+        related='company_id.x_fc_default_thickness_uom',
+        readonly=False, string='Thickness Unit',
+    )
+    x_fc_default_volume_uom = fields.Selection(
+        related='company_id.x_fc_default_volume_uom',
+        readonly=False, string='Volume Unit',
+    )
+    x_fc_default_mass_uom = fields.Selection(
+        related='company_id.x_fc_default_mass_uom',
+        readonly=False, string='Mass Unit',
+    )
+    x_fc_default_pressure_uom = fields.Selection(
+        related='company_id.x_fc_default_pressure_uom',
+        readonly=False, string='Pressure Unit',
+    )
+    x_fc_default_current_density_uom = fields.Selection(
+        related='company_id.x_fc_default_current_density_uom',
+        readonly=False, string='Current Density Unit',
+    )
+    x_fc_default_area_uom = fields.Selection(
+        related='company_id.x_fc_default_area_uom',
+        readonly=False, string='Area Unit',
+    )

fusion_plating/fusion_plating/views/res_config_settings_views.xml

@@ -37,6 +37,46 @@
                             <field name="x_fc_default_mastery_threshold"/>
                         </setting>
                     </block>
+
+                    <block title="Units of Measure"
+                           name="fp_uom_settings"
+                           help="Default units used wherever the shop records measurements. North-American aerospace shops typically pick °F + mils; metric shops pick °C + microns. Each new record (work order, oven, bath log, thickness reading) inherits these defaults; per-record overrides remain possible.">
+                        <setting id="fp_default_temp_uom"
+                                 string="Temperature"
+                                 help="Bake temps, oven setpoints, bath temperatures.">
+                            <field name="x_fc_default_temp_uom"/>
+                        </setting>
+                        <setting id="fp_default_thickness_uom"
+                                 string="Thickness"
+                                 help="Coating spec targets and Fischerscope readings.">
+                            <field name="x_fc_default_thickness_uom"/>
+                        </setting>
+                        <setting id="fp_default_volume_uom"
+                                 string="Volume"
+                                 help="Bath volumes and chemical addition logs.">
+                            <field name="x_fc_default_volume_uom"/>
+                        </setting>
+                        <setting id="fp_default_mass_uom"
+                                 string="Mass"
+                                 help="Chemical doses, parts weight, waste manifests.">
+                            <field name="x_fc_default_mass_uom"/>
+                        </setting>
+                        <setting id="fp_default_pressure_uom"
+                                 string="Pressure"
+                                 help="Compressed-air pressure, agitation, filtration.">
+                            <field name="x_fc_default_pressure_uom"/>
+                        </setting>
+                        <setting id="fp_default_current_density_uom"
+                                 string="Current Density"
+                                 help="Electrolytic plating bath current density.">
+                            <field name="x_fc_default_current_density_uom"/>
+                        </setting>
+                        <setting id="fp_default_area_uom"
+                                 string="Area"
+                                 help="Part surface area, masking area.">
+                            <field name="x_fc_default_area_uom"/>
+                        </setting>
+                    </block>
                 </app>
             </xpath>
         </field>