feat(shopfloor): Phase 3 — plant_kanban endpoint + dispatch

PV-Phase3 of the plant-view redesign.

- /fp/landing/plant_kanban JSONRPC endpoint returns {kpis, columns,
  cards} in one payload. One card per fp.job; cards denormalized so
  the OWL component doesn't fan out RPCs. Server-side filter handling
  for All / Mine / Running / Blocked / Overdue / FAIR. Within-column
  sort by (overdue, _SORT_PRIORITY[card_state], due_date).
- fusion_plating_shopfloor.action_fp_plant_kanban client action
  registered alongside the existing fp_shopfloor_landing action.
- fp_landing_data.xml resolver extended to read the layout flag and
  dispatch to v2 when x_fc_shopfloor_layout='v2' (default still legacy).

Card payload (23 fields): WO, customer, PN+rev, qty, PO, recipe, spec,
tags, current step + work centre, state chip, mini_timeline, operator,
icons (signoff / bake / tracking / etc.), progress.

State-chip mapping per spec §6.1 — one map keyed by card_state with
running-time elapsed, idle-hours, and operator-name interpolation.

Verified live — card payload sample on WO-30036 (contract_review state)
produces all expected keys + 9-element mini_timeline.

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

fusion_plating/fusion_plating/data/fp_landing_data.xml

@@ -24,15 +24,37 @@
         <field name="model_id" ref="base.model_res_users"/>
         <field name="state">code</field>
         <field name="code"><![CDATA[
-# Resolve in priority order: user pref → company default → Sale Orders fallback.
+# Resolve in priority order:
+#   1. user.x_fc_plating_landing_action_id     (per-user override)
+#   2. company.x_fc_default_landing_action_id  (company default)
+#   3. Shop Floor plant-view kanban             (when x_fc_shopfloor_layout='v2')
+#   4. Sale Orders                              (when v2 flag unset / legacy)
+#   5. Process recipes                          (configurator absent)
 user = env.user
 target = False
 if 'x_fc_plating_landing_action_id' in user._fields and user.x_fc_plating_landing_action_id:
     target = user.x_fc_plating_landing_action_id.sudo()
 elif 'x_fc_default_landing_action_id' in env.company._fields and env.company.x_fc_default_landing_action_id:
     target = env.company.x_fc_default_landing_action_id.sudo()
+
 if not target:
-    target = env.ref('fusion_plating_configurator.action_fp_sale_orders', raise_if_not_found=False)
+    # 2026-05-23 — plant-view dispatch. Read the layout flag and pick the
+    # appropriate Shop Floor action. Falls through to Sale Orders if no
+    # client action is registered (e.g. shopfloor module not installed).
+    layout = env['ir.config_parameter'].sudo().get_param(
+        'fusion_plating_shopfloor.layout', default='legacy',
+    )
+    if layout == 'v2':
+        target = env.ref(
+            'fusion_plating_shopfloor.action_fp_plant_kanban',
+            raise_if_not_found=False,
+        )
+    # Legacy or v2-missing → fall through to Sale Orders
+    if not target:
+        target = env.ref(
+            'fusion_plating_configurator.action_fp_sale_orders',
+            raise_if_not_found=False,
+        )
 
 if target:
     action = target.sudo().read()[0]