feat: add Django web app, CloudKit sync, dashboard, and game_datetime_utc export

Adds the full Django application layer on top of sportstime_parser:
- core: Sport, Team, Stadium, Game models with aliases and league structure
- scraper: orchestration engine, adapter, job management, Celery tasks
- cloudkit: CloudKit sync client, sync state tracking, sync jobs
- dashboard: staff dashboard for monitoring scrapers, sync, review queue
- notifications: email reports for scrape/sync results
- Docker setup for deployment (Dockerfile, docker-compose, entrypoint)

Game exports now use game_datetime_utc (ISO 8601 UTC) instead of
venue-local date+time strings, matching the canonical format used
by the iOS app.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

dashboard/urls.py

@@ -0,0 +1,21 @@
+from django.urls import path
+from . import views
+
+app_name = 'dashboard'
+
+urlpatterns = [
+    path('', views.index, name='index'),
+    path('stats/', views.stats, name='stats'),
+    path('scraper-status/', views.scraper_status, name='scraper_status'),
+    path('sync-status/', views.sync_status, name='sync_status'),
+    path('review-queue/', views.review_queue, name='review_queue'),
+    path('export/', views.export_data, name='export'),
+    # Actions
+    path('run-scraper/<str:sport_code>/<int:season>/', views.run_scraper, name='run_scraper'),
+    path('run-all-scrapers/', views.run_all_scrapers, name='run_all_scrapers'),
+    path('run-sync/', views.run_sync, name='run_sync'),
+    path('export/download/', views.export_download, name='export_download'),
+    # API
+    path('api/sync-progress/<int:job_id>/', views.sync_progress_api, name='sync_progress_api'),
+    path('api/running-syncs/', views.running_syncs_api, name='running_syncs_api'),
+]