feat(jobs): add equipment, audit, plating-spec fields to fp.job.step

Equipment: bath_id, tank_id, rack_id (all in core). oven_id deferred
to a bridge module — fusion.plating.bake.oven lives in shopfloor and
core can't depend on it. masking_material_id deferred too — model
fusion.plating.masking.material does not yet exist anywhere; will be
added when the masking model lands.

Audit: signoff_user_id (readonly), facility_id (related from
work_centre_id, stored).

Plating spec: thickness_target, thickness_uom (um/mil/in),
dwell_time_minutes, bake_setpoint_temp, bake_actual_duration,
bake_chart_recorder_ref (Nadcap audit trail).

Recipe-related: requires_signoff, auto_complete, is_manual,
customer_visible (all related from recipe_node_id, stored, so
operator sees current values without re-querying process.node).

Cost rollup: cost_per_hour related from work_centre_id, cost_total
computed (duration_actual / 60 x rate), currency_id related too.
Full rollup-from-timelogs lands in Task 1.7.

Tests cover: facility_id related-field, thickness_uom default,
cost_total zero/non-zero paths.

Manifest 19.0.8.4.1 -> 19.0.8.5.0.

Part of: native job model migration (spec 2026-04-25)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating/models/fp_job_step.py

@@ -76,6 +76,83 @@ class FpJobStep(models.Model):
     duration_actual = fields.Float(string='Actual Minutes', readonly=True)
     instructions = fields.Html(string='Step Instructions')
 
+    # ------------------------------------------------------------------
+    # Equipment + audit (Task 1.6)
+    # oven_id is deferred to a bridge module — fusion.plating.bake.oven
+    # lives in fusion_plating_shopfloor and core can't depend on it.
+    # masking_material_id is deferred — fusion.plating.masking.material
+    # does not yet exist in any installed module; will be added when
+    # the masking model lands (likely in fusion_plating_process_en
+    # or a future fusion_plating_masking module).
+    # ------------------------------------------------------------------
+    bath_id = fields.Many2one('fusion.plating.bath')
+    tank_id = fields.Many2one('fusion.plating.tank')
+    rack_id = fields.Many2one('fusion.plating.rack')
+    signoff_user_id = fields.Many2one('res.users', readonly=True)
+    facility_id = fields.Many2one(
+        'fusion.plating.facility',
+        related='work_centre_id.facility_id',
+        store=True,
+    )
+
+    # ------------------------------------------------------------------
+    # Plating spec (Task 1.6)
+    # ------------------------------------------------------------------
+    thickness_target = fields.Float(string='Target Thickness')
+    thickness_uom = fields.Selection(
+        [('um', 'µm'), ('mil', 'mil'), ('inch', 'in')],
+        default='um',
+    )
+    dwell_time_minutes = fields.Float()
+    bake_setpoint_temp = fields.Float(string='Bake Setpoint °C')
+    bake_actual_duration = fields.Float(string='Bake Actual Minutes')
+    bake_chart_recorder_ref = fields.Char(string='Bake Chart Recorder Ref')
+
+    # ------------------------------------------------------------------
+    # Recipe-related (Task 1.6)
+    # ------------------------------------------------------------------
+    requires_signoff = fields.Boolean(
+        related='recipe_node_id.requires_signoff',
+        store=True,
+    )
+    auto_complete = fields.Boolean(
+        related='recipe_node_id.auto_complete',
+        store=True,
+    )
+    is_manual = fields.Boolean(
+        related='recipe_node_id.is_manual',
+        store=True,
+    )
+    customer_visible = fields.Boolean(
+        related='recipe_node_id.customer_visible',
+        store=True,
+    )
+
+    # ------------------------------------------------------------------
+    # Cost rollup (Task 1.6)
+    # cost_per_hour comes from fp.work.centre (Task 1.2 added it there).
+    # cost_total recomputes when duration_actual or rate changes —
+    # duration_actual will be sum of timelog rows once Task 1.7 lands.
+    # ------------------------------------------------------------------
+    cost_per_hour = fields.Monetary(
+        related='work_centre_id.cost_per_hour',
+        currency_field='currency_id',
+    )
+    cost_total = fields.Monetary(
+        compute='_compute_cost_total',
+        store=True,
+        currency_field='currency_id',
+    )
+    currency_id = fields.Many2one(
+        'res.currency',
+        related='work_centre_id.currency_id',
+    )
+
+    @api.depends('duration_actual', 'cost_per_hour')
+    def _compute_cost_total(self):
+        for step in self:
+            step.cost_total = (step.duration_actual / 60.0) * step.cost_per_hour
+
     # ------------------------------------------------------------------
     # State machine — actions
     # ------------------------------------------------------------------