feat(fusion_plating): kind.area_kind drives Shop Floor column routing

Add required area_kind Selection to fp.step.kind so each kind
self-declares which plant-view column its steps belong in. Replaces
the hardcoded _STEP_KIND_TO_AREA dict (removed in fp_job_step.py
in the follow-up commit).

- New `blast` kind for the Blasting column (sequence=35)
- 26 existing kind records seeded with area_kind in XML
- Pre-migrate 19.0.21.2.0 seeds existing rows BEFORE NOT NULL hits
  the schema; also activates derack/demask/gating that were
  deactivated in 19.0.20.6.0 but are needed for the full taxonomy
- Step Kind form + list views surface area_kind (badge + chip)
- Step Kind search adds Group By Shop Floor Column
- Simple Editor kind picker shows "Masking — Masking column"
  suffix so authors see the routing at pick time
- Add Hot Water Porosity Test (A-15) + Final Inspection / Packaging
  templates (used by 7+3 recipe nodes that previously had no
  library entry)

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

fusion_plating/fusion_plating/static/src/xml/simple_recipe_editor.xml

@@ -509,6 +509,7 @@
                                         <t t-foreach="state.kindOptions || []" t-as="k" t-key="k.id">
                                             <option t-att-value="k.code" t-att-selected="k.code === state.libraryEditor.default_kind">
                                                 <t t-esc="k.name"/>
+                                                <t t-if="k.area_kind_label"> — <t t-esc="k.area_kind_label"/> column</t>
                                             </option>
                                         </t>
                                         <!-- Manager-only inline create. The