fix(jobs): qty gate false-positive on paperwork / first steps

The qty gate I added refused Finish on steps where qty_at_step > 0,
to force operators to move parts forward first. But the first-step
seed in _compute_qty_at_step gives the earliest non-terminal step
a notional qty = job.qty — a UI hint, not actual parked parts.
Paperwork steps (Contract Review, Inspection-by-paperwork, etc.)
sit on that seed, and the gate was blocking Finish with a misleading
error.

Fixes:
- button_finish gate now checks for REAL incoming moves before
  refusing. Seed-only qty (no incoming_move_ids filtered to non-
  self-loop) is exempt.
- _fp_record_one_piece_auto_move detects seed-only qty and bulk-
  moves ALL parts in one shot to the downstream step. Correct for
  paperwork / first steps where parts don't physically wait
  per-piece — one click finishes the paperwork and pushes the whole
  batch forward.

For steps with REAL incoming moves (parts actually moved here via
a Move record), the original gate semantics still apply: qty == 1
auto-moves one part; qty > 1 raises with the "use Complete 1 → Next
or Move…" message.

Verified on entech: Contract Review with seed qty=6 now finishes
cleanly, bulk-moving all 6 parts to the next step in one move.

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': '19.0.18.15.3',
+    'version': '19.0.18.15.4',
     'category': 'Manufacturing/Plating',
     'summary': 'Core plating / metal finishing ERP: facilities, processes, tanks, baths, jobs, operators.',
     'description': """

fusion_plating/fusion_plating/models/fp_job_step.py

@@ -393,12 +393,24 @@ class FpJobStep(models.Model):
             # a downstream step to move them into. Last runnable step
             # is exempt — parts finishing there complete in place
             # (qty_done reconciliation at job close is the catch-net).
+            #
+            # Seed-only exemption: the first-step seed in
+            # _compute_qty_at_step gives the earliest non-terminal step
+            # a notional qty = job.qty. That's a UI hint, not a real
+            # parked batch — no incoming move record backs it. Paperwork
+            # steps (Contract Review, Inspection, etc.) sit on that seed.
+            # If the step has no REAL incoming moves, skip the gate.
             if not skip_qty_gate and step.qty_at_step > 0:
                 has_downstream = step.job_id.step_ids.filtered(
                     lambda s: s.sequence > step.sequence
                     and s.state in ('pending', 'ready')
                 )
-                if has_downstream:
+                has_real_incoming = bool(
+                    step.incoming_move_ids.filtered(
+                        lambda m: m.from_step_id != step
+                    )
+                )
+                if has_downstream and has_real_incoming:
                     raise UserError(_(
                         "Step '%(name)s' still has %(n)d part(s) "
                         "parked — move them to the next step before "

fusion_plating/fusion_plating_jobs/__manifest__.py

@@ -3,7 +3,7 @@
 # License OPL-1 (Odoo Proprietary License v1.0)
 {
     'name': 'Fusion Plating — Native Jobs',
-    'version': '19.0.8.20.5',
+    'version': '19.0.8.20.6',
     'category': 'Manufacturing/Plating',
     'summary': 'Native plating job model — replaces mrp.production / mrp.workorder bridge.',
     'author': 'Nexa Systems Inc.',

fusion_plating/fusion_plating_jobs/models/fp_job_step.py

@@ -1112,16 +1112,18 @@ class FpJobStep(models.Model):
 
 
     def _fp_record_one_piece_auto_move(self):
-        """Decide whether to silently record a move(qty=1) before
+        """Decide whether to silently record a move before the step
-        the step finishes. Five cases:
+        finishes. Six cases:
           - qty_at_step == 0: nothing to do (parts already moved).
           - last runnable step: parts complete in place; no move.
-          - qty_at_step == 1 + downstream: record move(1).
+          - SEED-ONLY qty + downstream: bulk-move all parts to next
-          - qty_at_step > 1 + downstream: raise.
+            step in one move. Paperwork / first steps don't physically
-          - qty_at_step > 1 + last step: allow (parts complete in
+            hold parts per-piece.
-            place; qty_done auto-tick is Phase 2).
+          - real qty == 1 + downstream: record move(1).
-        Called from action_finish_and_advance just before
+          - real qty > 1 + downstream: raise — operator must use
-        button_finish.
+            Complete 1 → Next (streaming) or Move… (batched).
+          - real qty > 1 + last step: allow (qty_done auto-tick Phase 2).
+        Called from action_finish_and_advance just before button_finish.
         """
         self.ensure_one()
         qty = self.qty_at_step
@@ -1133,6 +1135,23 @@ class FpJobStep(models.Model):
         ).sorted('sequence')[:1]
         if not next_step:
             return False
+        # Seed-only qty: no real incoming moves backing it. Paperwork
+        # step or first-step seed — bulk-move all parts in one shot.
+        has_real_incoming = bool(
+            self.incoming_move_ids.filtered(
+                lambda m: m.from_step_id != self
+            )
+        )
+        if not has_real_incoming:
+            self.env['fp.job.step.move'].create({
+                'job_id':           self.job_id.id,
+                'from_step_id':     self.id,
+                'to_step_id':       next_step.id,
+                'transfer_type':    'step',
+                'qty_moved':        qty,
+                'moved_by_user_id': self.env.user.id,
+            })
+            return True
         if qty > 1:
             raise UserError(_(
                 "Step '%s' still has %d parts here — use the row's "
@@ -1140,6 +1159,7 @@ class FpJobStep(models.Model):
                 "or the 'Move…' wizard (for batched flow) to drain "
                 "the step before finishing."
             ) % (self.name, qty))
+        # qty == 1 + real incoming → record single move.
         self.env['fp.job.step.move'].create({
             'job_id':           self.job_id.id,
             'from_step_id':     self.id,