refactor(shopfloor,jobs): consolidate operator UI into shopfloor

Removes the parallel OWL/controller stack I built in
fusion_plating_jobs (job_process_tree, job_plant_overview,
job_manager_dashboard, job_tablet, job_*.scss, plus parallel
controllers and action XML files). Refactors the existing
fusion_plating_shopfloor components in place to bind to
fp.job / fp.job.step instead of mrp.production / mrp.workorder.

End state:
- ONE operator UI module (shopfloor) instead of two parallel ones
- Existing token system (_fp_shopfloor_tokens.scss) reused as
  designed - no duplicate jobs tokens
- Existing /fp/shopfloor/* RPC URLs preserved (no integration
  breakage); workorder_id kwargs accepted as legacy aliases for
  step_id / job_id so older tablet clients keep working
- Existing visual designs preserved - only the data layer
  underneath changed
- Process Tree button on fp.job form now points at
  fusion_plating_shopfloor's fp_process_tree client action
- Bake Windows / First-Piece Gates / Bake Oven / Operator Queue
  models stay where they were
- legacy_menu_hide.xml trimmed: only the bridge_mrp Production
  Priorities entry remains; the 3 shopfloor menus (Manager Desk,
  Plant Overview, Tablet Station) are now visible (the canonical
  native consoles)

Manifests:
- fusion_plating_jobs 19.0.3.1.0 -> 19.0.4.0.0 (consolidation bump,
  no more bundled JS/SCSS, only job_scan controller retained)
- fusion_plating_shopfloor 19.0.14.4.0 -> 19.0.15.0.0 (asset bundle
  cache-bust + significant controller refactor)

Tests pass on entech: 0 failed, 0 errors of 41 tests.

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

fusion_plating/fusion_plating_jobs/controllers/__init__.py

@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
+# Consolidated 2026-04-24: the parallel OWL/controller stack was
+# removed. job_scan is the only controller retained — it powers the
+# QR-sticker scan redirect for fp.job records.
 from . import job_scan
-from . import process_tree
-from . import plant_overview
-from . import manager_dashboard
-from . import tablet