fix(fusion_clock): planning port defers when planning ORM not loaded during -u

fusion_clock doesn't depend on planning, so planning's models load AFTER it
during -u and the port saw no data. Now detect planning tables via SQL,
defer (no marker) when the ORM isn't loaded, and finish the port from the
deploy odoo-shell step (full registry). Marker now owned by the method.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

fusion_clock/tests/test_planning_migration.py

@@ -18,6 +18,10 @@ class TestPlanningMigration(TransactionCase):
         if 'planning.slot' not in self.env:
             self.skipTest('planning not installed (Community / local dev)')
 
+        # Ensure the port actually runs (it is marker-guarded for production).
+        self.env['ir.config_parameter'].sudo().search(
+            [('key', '=', 'fusion_clock.planning_migrated')]).unlink()
+
         prole = self.env['planning.role'].create({'name': 'PortLead', 'color': 5})
         emp = self.env['hr.employee'].create({'name': 'Porty McPort'})
         if 'default_planning_role_id' in emp._fields: