fix(fusion_plating_jobs): drop ir.cron numbercall/doall — removed in Odoo 19

Caught during entech deploy of the Phase 2 auto-pause cron. Odoo 19
ir.cron no longer accepts numbercall or doall fields; the load fails
with:

  ValueError: Invalid field 'numbercall' in 'ir.cron'

Removed both from ir_cron_autopause_stale_steps. The other crons in
the same file (nudge stale paused / in_progress) already used the
minimal field set — matching that pattern now.

Also added a CLAUDE.md section so future-Claude doesn't reintroduce
the speculative fields.

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

fusion_plating/fusion_plating_jobs/data/fp_cron_data.xml

@@ -44,8 +44,6 @@
         <field name="code">model._cron_autopause_stale_steps()</field>
         <field name="interval_number">30</field>
         <field name="interval_type">minutes</field>
-        <field name="numbercall">-1</field>
-        <field name="doall" eval="False"/>
         <field name="active" eval="True"/>
     </record>
 </odoo>