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>

scraper/admin.py

@@ -0,0 +1,139 @@
+"""
+Admin configuration for scraper models.
+"""
+from django.contrib import admin
+from django.utils.html import format_html
+from import_export.admin import ImportExportMixin, ImportExportModelAdmin
+from simple_history.admin import SimpleHistoryAdmin
+
+from .models import ScraperConfig, ScrapeJob, ManualReviewItem
+from .resources import ScraperConfigResource, ScrapeJobResource, ManualReviewItemResource
+
+
+@admin.register(ScraperConfig)
+class ScraperConfigAdmin(ImportExportMixin, SimpleHistoryAdmin):
+    resource_class = ScraperConfigResource
+    list_display = [
+        '__str__',
+        'sport',
+        'season',
+        'is_active',
+        'last_scrape_at',
+        'next_scrape_at',
+        'scrape_interval_hours',
+    ]
+    list_filter = ['sport', 'is_active', 'season']
+    search_fields = ['sport__name', 'sport__short_name']
+    ordering = ['-season', 'sport']
+    readonly_fields = ['created_at', 'updated_at']
+
+
+@admin.register(ScrapeJob)
+class ScrapeJobAdmin(ImportExportModelAdmin):
+    resource_class = ScrapeJobResource
+    list_display = [
+        '__str__',
+        'status_badge',
+        'games_found',
+        'games_created',
+        'games_updated',
+        'duration_display',
+        'created_at',
+    ]
+    list_filter = ['status', 'config__sport', ('created_at', admin.DateFieldListFilter)]
+    search_fields = ['config__sport__name', 'errors']
+    ordering = ['-created_at']
+    readonly_fields = ['created_at', 'updated_at', 'duration_display']
+
+    @admin.display(description='Status')
+    def status_badge(self, obj):
+        colors = {
+            'pending': '#ffc107',
+            'running': '#17a2b8',
+            'completed': '#28a745',
+            'failed': '#dc3545',
+            'cancelled': '#6c757d',
+        }
+        color = colors.get(obj.status, '#6c757d')
+        return format_html(
+            '<span style="background-color: {}; color: white; padding: 3px 8px; '
+            'border-radius: 3px; font-size: 11px;">{}</span>',
+            color, obj.get_status_display()
+        )
+
+    @admin.display(description='Duration')
+    def duration_display(self, obj):
+        duration = obj.duration
+        if duration is not None:
+            if duration < 60:
+                return f"{duration:.1f}s"
+            elif duration < 3600:
+                return f"{duration/60:.1f}m"
+            else:
+                return f"{duration/3600:.1f}h"
+        return '-'
+
+
+@admin.register(ManualReviewItem)
+class ManualReviewItemAdmin(ImportExportModelAdmin):
+    resource_class = ManualReviewItemResource
+    list_display = [
+        'raw_value',
+        'item_type',
+        'sport',
+        'status_badge',
+        'confidence_bar',
+        'matched_value',
+        'created_at',
+    ]
+    list_filter = ['status', 'item_type', 'sport']
+    search_fields = ['raw_value', 'matched_value']
+    ordering = ['-confidence', '-created_at']
+    readonly_fields = ['created_at', 'updated_at', 'resolved_at', 'resolved_by']
+    actions = ['approve_items', 'reject_items']
+
+    @admin.display(description='Status')
+    def status_badge(self, obj):
+        colors = {
+            'pending': '#ffc107',
+            'approved': '#28a745',
+            'rejected': '#dc3545',
+            'resolved': '#17a2b8',
+        }
+        color = colors.get(obj.status, '#6c757d')
+        return format_html(
+            '<span style="background-color: {}; color: white; padding: 3px 8px; '
+            'border-radius: 3px; font-size: 11px;">{}</span>',
+            color, obj.get_status_display()
+        )
+
+    @admin.display(description='Confidence')
+    def confidence_bar(self, obj):
+        color = '#28a745' if obj.confidence >= 85 else '#ffc107' if obj.confidence >= 70 else '#dc3545'
+        return format_html(
+            '<div style="width: 100px; background: #ddd; border-radius: 3px;">'
+            '<div style="width: {}%; background: {}; height: 16px; border-radius: 3px; '
+            'text-align: center; color: white; font-size: 11px; line-height: 16px;">'
+            '{}%</div></div>',
+            obj.confidence, color, obj.confidence
+        )
+
+    @admin.action(description='Approve selected items')
+    def approve_items(self, request, queryset):
+        from django.utils import timezone
+        updated = queryset.update(
+            status='approved',
+            resolved_at=timezone.now(),
+            resolved_by=request.user
+        )
+        self.message_user(request, f'{updated} items approved.')
+
+    @admin.action(description='Reject selected items')
+    def reject_items(self, request, queryset):
+        from django.utils import timezone
+        updated = queryset.update(
+            status='rejected',
+            resolved_at=timezone.now(),
+            resolved_by=request.user
+        )
+        self.message_user(request, f'{updated} items rejected.')