feat(fusion_clock): bi-weekly attendance filter — pay-period filters + picker

Reuse the existing Pay Period setting (Frequency + Anchor) as the single
source of truth via a shared pure helper (models/pay_period.py); fusion.clock.report
delegates to it. Add Current/Previous/Next Pay Period filters to the attendance
search view (search-method computed booleans on hr.attendance), a Bi-Weekly Period
picker wizard (pick start -> auto +2 weeks, editable; Apply opens the filtered list)
reachable from an Attendance menu item and a dashboard tile. Window follows the
configured frequency; TZ-correct via local-day boundaries. Bump 3.14.4 -> 3.15.0.

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

fusion_clock/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Clock',
-    'version': '19.0.3.14.4',
+    'version': '19.0.3.15.0',
     'category': 'Human Resources/Attendances',
     'summary': 'Complete Employee T&A with Geofencing, Shifts, Penalties, Overtime, Kiosk, Dashboard & Payroll Export',
     'description': """
@@ -73,6 +73,7 @@ Integrates natively with Odoo's hr.attendance module for full payroll compatibil
         'views/clock_schedule_views.xml',
         # Wizards (must load before clock_menus.xml since menu references wizard action)
         'wizard/clock_nfc_enrollment_views.xml',
+        'wizard/clock_period_picker_views.xml',
         'views/clock_menus.xml',
         # Views - Portal
         'views/portal_clock_templates.xml',