Add URL routes + stubs for work log payroll cross-link

Routes /history/<id>/ and /history/<id>/payroll/ajax/ to stub views.
Both admin-gated; no data yet. Sets up the surface for Tasks 2-4.

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

core/urls.py

@@ -18,6 +18,13 @@ urlpatterns = [
     # CSV export — downloads filtered work logs as a spreadsheet
     path('history/export/', views.export_work_log_csv, name='export_work_log_csv'),
 
+    # === WORK LOG PAYROLL CROSS-LINK (admin-only) ===
+    # Click a historic work log -> see who got paid and who didn't.
+    # AJAX endpoint returns JSON (the modal builds its own DOM safely);
+    # detail view renders the same data as a shareable full page.
+    path('history/<int:log_id>/', views.work_log_payroll_detail, name='work_log_payroll_detail'),
+    path('history/<int:log_id>/payroll/ajax/', views.work_log_payroll_ajax, name='work_log_payroll_ajax'),
+
     # CSV export — downloads all worker data (admin only)
     path('workers/export/', views.export_workers_csv, name='export_workers_csv'),
 

core/views.py

@@ -720,6 +720,44 @@ def work_history(request):
     return render(request, 'core/work_history.html', context)
 
 
+# =============================================================================
+# === WORK LOG PAYROLL CROSS-LINK ===
+# From any historic work log, see which workers got paid, which didn't, and
+# (for paid ones) which payslip it was. Admin-only; supervisors never see
+# payroll data. Two endpoints share one helper so the modal and the full
+# page can never drift apart.
+# =============================================================================
+
+def _build_work_log_payroll_context(log):
+    """Return a context dict describing the payroll status of a work log.
+
+    Used by both the AJAX modal endpoint and the full-page detail view so
+    they always show identical data. See Task 2 for the full implementation.
+    """
+    # Stub — implemented in Task 2
+    return {'log': log}
+
+
+@login_required
+def work_log_payroll_ajax(request, log_id):
+    """Return JSON describing the payroll status of a work log."""
+    # Stub — implemented in Task 3
+    if not is_admin(request.user):
+        return JsonResponse({'error': 'Not authorized'}, status=403)
+    get_object_or_404(WorkLog, id=log_id)
+    return JsonResponse({'stub': True})
+
+
+@login_required
+def work_log_payroll_detail(request, log_id):
+    """Render the full payroll-status page for a single work log."""
+    # Stub — implemented in Task 4
+    if not is_admin(request.user):
+        return HttpResponseForbidden("Admin access required.")
+    log = get_object_or_404(WorkLog, id=log_id)
+    return HttpResponse(f"<p>stub for log {log.id}</p>")
+
+
 # === CSV EXPORT ===
 # Downloads the filtered work log history as a CSV file.
 # Uses the same filters as the work_history page.