fix(portal): recover full-bleed wrapper fix + Schedule Payslips tab

These round-2 portal fixes (white-border wrapper neutralisation in
portal_clock.css, and the Payslips nav tab on the fusion_planning Schedule
page) were briefly bundled into a concurrent NFC commit that a parallel session
then rebased, dropping them from main. They are deployed and verified on entech
(fusion_clock 3.12.3 / fusion_planning 1.3.0); re-committing so git matches.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

fusion_planning/controllers/portal_schedule.py

@@ -93,5 +93,8 @@ class FusionPlanningPortal(http.Controller):
             'slot_count': len(slots),
             'next_slot': next_slot_data,
             'page_name': 'fusion_clock_schedule',
+            # Match the other portal pages so the Payslips nav tab appears
+            # consistently when payroll is installed.
+            'show_payslips': 'hr.payslip' in request.env,
         }
         return request.render('fusion_planning.portal_schedule_page', values)