feat(sub12a): extend process.node + process.node.input

process.node — additive only:
  is_template, source_template_id, tank_ids (M2M to fusion.plating.tank
  with new join table fp_node_tank_rel), material_callout, time/temp
  targets + units, voltage_target, viscosity_target,
  requires_rack_assignment, requires_transition_form, default_kind,
  preferred_editor.

process.node.input — additive only:
  kind (step_input/transition_input, default step_input so existing
  rows keep working), target_min/target_max/target_unit, compliance_tag,
  plus 9 new typed input_type values (time_hms, time_seconds,
  temperature, thickness, pass_fail, date, signature, location_picker,
  customer_wo).

No removed fields, no removed selection values. Tree editor + every
existing battle test (S14/S15/S17/S18/S19) untouched.

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

fusion_plating/fusion_plating/models/fp_process_node.py

@@ -284,6 +284,88 @@ class FpProcessNode(models.Model):
         string='Operator Inputs',
     )
 
+    # ===== Sub 12a — Simple Editor + Step Library extensions =================
+    # All fields are additive; tree editor + runtime are unaffected. Drag-drop
+    # from the library snapshot-copies these into a new node (no live ref).
+
+    is_template = fields.Boolean(
+        string='Use as Starter Template',
+        help='When True (and node_type=recipe), this recipe appears in the '
+             'Simple Editor\'s "Import starter from template" dropdown.',
+    )
+    source_template_id = fields.Many2one(
+        'fp.step.template',
+        string='Source Library Template',
+        ondelete='set null',
+        index=True,
+        help='Snapshot trace — set when this node was created by dragging '
+             'a library step in. Editing the template later does not change '
+             'this node (snapshot semantics).',
+    )
+    tank_ids = fields.Many2many(
+        'fusion.plating.tank',
+        'fp_node_tank_rel', 'node_id', 'tank_id',
+        string='Allowed Stations',
+        help='Stations the operator may pick at runtime.',
+    )
+    material_callout = fields.Char(
+        string='Material Callout',
+        help='Short string for traveller "Material" column. Defaults to '
+             'process type name if blank.',
+    )
+    time_min_target = fields.Float(string='Time Min')
+    time_max_target = fields.Float(string='Time Max')
+    time_unit = fields.Selection(
+        [('sec', 'Seconds'), ('min', 'Minutes'), ('hr', 'Hours')],
+        string='Time Unit', default='min',
+    )
+    temp_min_target = fields.Float(string='Temp Min')
+    temp_max_target = fields.Float(string='Temp Max')
+    temp_unit = fields.Selection(
+        [('F', '°F'), ('C', '°C')],
+        string='Temp Unit', default='F',
+    )
+    voltage_target = fields.Float(string='Voltage Target')
+    viscosity_target = fields.Float(string='Viscosity Target')
+    requires_rack_assignment = fields.Boolean(
+        string='Requires Rack Assignment',
+        help='Sub 12b — triggers Rack Parts sub-dialog at runtime.',
+    )
+    requires_transition_form = fields.Boolean(
+        string='Requires Transition Form',
+        help='Sub 12b — opens the transition form before Mark Done.',
+    )
+    default_kind = fields.Selection(
+        [
+            ('cleaning', 'Cleaning'),
+            ('etch', 'Etch'),
+            ('rinse', 'Rinse'),
+            ('plate', 'Plating'),
+            ('bake', 'Bake'),
+            ('inspect', 'Inspection'),
+            ('racking', 'Racking'),
+            ('derack', 'De-Racking'),
+            ('mask', 'Masking'),
+            ('demask', 'De-Masking'),
+            ('dry', 'Drying'),
+            ('wbf_test', 'Water Break Free Test'),
+            ('final_inspect', 'Final Inspection'),
+            ('ship', 'Shipping'),
+            ('gating', 'Gating'),
+        ],
+        string='Step Kind',
+    )
+    preferred_editor = fields.Selection(
+        [
+            ('tree', 'Tree Editor'),
+            ('simple', 'Simple Editor'),
+            ('auto', 'Use Company Default'),
+        ],
+        string='Preferred Editor', default='auto',
+        help='Which editor opens when this recipe is selected from the '
+             'menu list. "Auto" follows the company-level default.',
+    )
+
     # ---- SQL constraints -----------------------------------------------------
 
     _sql_constraints = [
@@ -504,6 +586,16 @@ class FpProcessNodeInput(models.Model):
             ('boolean', 'Yes / No'),
             ('selection', 'Selection'),
             ('photo', 'Photo'),
+            # Sub 12a — typed inputs the simple editor + traveller need
+            ('time_hms', 'Time (HH:MM:SS)'),
+            ('time_seconds', 'Time (seconds)'),
+            ('temperature', 'Temperature'),
+            ('thickness', 'Thickness'),
+            ('pass_fail', 'Pass / Fail'),
+            ('date', 'Date / Time'),
+            ('signature', 'Signature'),
+            ('location_picker', 'Location Picker'),
+            ('customer_wo', 'Customer WO #'),
         ],
         string='Input Type',
         required=True,
@@ -529,3 +621,28 @@ class FpProcessNodeInput(models.Model):
         string='Unit',
         help='Unit label (e.g. °C, min, psi).',
     )
+
+    # ===== Sub 12a — kind + target ranges + compliance tag ==================
+    kind = fields.Selection(
+        [
+            ('step_input', 'Step Measurement'),
+            ('transition_input', 'Transition Form Field'),
+        ],
+        string='Kind', default='step_input', index=True,
+        help='step_input = recorded during the step. transition_input = '
+             'recorded when leaving the step (Sub 12b uses these in the '
+             'Move Parts dialog).',
+    )
+    target_min = fields.Float(string='Target Min')
+    target_max = fields.Float(string='Target Max')
+    target_unit = fields.Char(string='Target Unit')
+    compliance_tag = fields.Selection(
+        [
+            ('none', 'None'),
+            ('as9100', 'AS9100'),
+            ('nadcap', 'Nadcap'),
+            ('cgp', 'Controlled Goods'),
+            ('nuclear', 'Nuclear'),
+        ],
+        string='Compliance Tag', default='none',
+    )