feat(sub12b): fp.job.step.move + fp.job.step.move.input.value

Chain-of-custody log: one row per Move Parts / Move Rack commit.
FP/MOVE/YYYY/NNNN sequence (5-digit). Carries from/to step + tank,
transfer type, qty, location, photo, rack, operator, datetime.

Child model captures recorded transition-input values (Sub 12a's
fp.step.template.transition.input snapshots → fp.job.step.move.
input.value rows). Each row carries 5 typed value columns; the
controller (Task 8) picks the right one based on input_type.

Operators get read+write+create — they generate moves at runtime —
but no unlink. Manager-only deletes for audit safety.

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

fusion_plating/fusion_plating/data/fp_sequence_data.xml

@@ -22,5 +22,13 @@
         <field name="company_id" eval="False"/>
     </record>
 
+    <!-- Sub 12b — Move Parts / Move Rack chain-of-custody log -->
+    <record id="seq_fp_job_step_move" model="ir.sequence">
+        <field name="name">FP — Move Log</field>
+        <field name="code">fp.job.step.move</field>
+        <field name="prefix">FP/MOVE/%(year)s/</field>
+        <field name="padding">5</field>
+        <field name="company_id" eval="False"/>
+    </record>
 
 </odoo>