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>

notifications/admin.py

@@ -0,0 +1,119 @@
+from django.contrib import admin
+from django.utils.html import format_html
+from simple_history.admin import SimpleHistoryAdmin
+
+from .models import EmailConfiguration, EmailLog
+
+
+@admin.register(EmailConfiguration)
+class EmailConfigurationAdmin(SimpleHistoryAdmin):
+    list_display = [
+        'name',
+        'is_enabled_badge',
+        'recipient_count',
+        'notify_on_scrape_complete',
+        'notify_on_scrape_failure',
+        'notify_on_sync_failure',
+    ]
+    list_filter = ['is_enabled']
+    readonly_fields = ['created_at', 'updated_at']
+
+    fieldsets = [
+        (None, {
+            'fields': ['name', 'is_enabled']
+        }),
+        ('Recipients', {
+            'fields': ['recipient_emails']
+        }),
+        ('Scraper Notifications', {
+            'fields': [
+                'notify_on_scrape_complete',
+                'notify_on_scrape_failure',
+                'notify_on_new_reviews',
+            ]
+        }),
+        ('CloudKit Sync Notifications', {
+            'fields': [
+                'notify_on_sync_complete',
+                'notify_on_sync_failure',
+            ]
+        }),
+        ('Thresholds', {
+            'fields': ['min_games_for_notification']
+        }),
+        ('Metadata', {
+            'fields': ['created_at', 'updated_at'],
+            'classes': ['collapse']
+        }),
+    ]
+
+    actions = ['send_test_email']
+
+    def is_enabled_badge(self, obj):
+        if obj.is_enabled:
+            return format_html('<span style="color: green;">● Enabled</span>')
+        return format_html('<span style="color: gray;">○ Disabled</span>')
+    is_enabled_badge.short_description = 'Status'
+
+    def recipient_count(self, obj):
+        return len(obj.get_recipients())
+    recipient_count.short_description = 'Recipients'
+
+    @admin.action(description='Send test email')
+    def send_test_email(self, request, queryset):
+        from notifications.tasks import send_test_notification
+        for config in queryset:
+            send_test_notification.delay(config.id)
+        self.message_user(request, f'Test emails queued for {queryset.count()} configurations.')
+
+
+@admin.register(EmailLog)
+class EmailLogAdmin(admin.ModelAdmin):
+    list_display = [
+        'subject',
+        'status_badge',
+        'recipients_display',
+        'created_at',
+    ]
+    list_filter = ['status', 'created_at']
+    search_fields = ['subject', 'recipients']
+    date_hierarchy = 'created_at'
+    ordering = ['-created_at']
+    readonly_fields = [
+        'configuration',
+        'subject',
+        'recipients',
+        'body_preview',
+        'status',
+        'error_message',
+        'scrape_job',
+        'sync_job',
+        'created_at',
+    ]
+
+    def has_add_permission(self, request):
+        return False
+
+    def has_change_permission(self, request, obj=None):
+        return False
+
+    def status_badge(self, obj):
+        colors = {
+            'sent': '#5cb85c',
+            'failed': '#d9534f',
+        }
+        color = colors.get(obj.status, '#999')
+        return format_html(
+            '<span style="background-color: {}; color: white; padding: 3px 8px; '
+            'border-radius: 3px; font-size: 11px;">{}</span>',
+            color,
+            obj.status.upper()
+        )
+    status_badge.short_description = 'Status'
+
+    def recipients_display(self, obj):
+        recipients = obj.recipients.split(',')
+        if len(recipients) > 2:
+            return f"{recipients[0]}, +{len(recipients)-1} more"
+        return obj.recipients
+    recipients_display.short_description = 'Recipients'