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/models.py

@@ -0,0 +1,131 @@
+from django.db import models
+from django.conf import settings
+from simple_history.models import HistoricalRecords
+
+
+class EmailConfiguration(models.Model):
+    """
+    Email notification configuration.
+    """
+    name = models.CharField(
+        max_length=100,
+        default='Default',
+        help_text='Configuration name'
+    )
+    is_enabled = models.BooleanField(
+        default=True,
+        help_text='Whether email notifications are enabled'
+    )
+
+    # Recipients
+    recipient_emails = models.TextField(
+        help_text='Comma-separated list of recipient email addresses'
+    )
+
+    # What to notify about
+    notify_on_scrape_complete = models.BooleanField(
+        default=True,
+        help_text='Send email after each scraper job completes'
+    )
+    notify_on_scrape_failure = models.BooleanField(
+        default=True,
+        help_text='Send email when scraper job fails'
+    )
+    notify_on_sync_complete = models.BooleanField(
+        default=False,
+        help_text='Send email after CloudKit sync completes'
+    )
+    notify_on_sync_failure = models.BooleanField(
+        default=True,
+        help_text='Send email when CloudKit sync fails'
+    )
+    notify_on_new_reviews = models.BooleanField(
+        default=True,
+        help_text='Include review items in scrape notifications'
+    )
+
+    # Thresholds
+    min_games_for_notification = models.PositiveIntegerField(
+        default=0,
+        help_text='Minimum games changed to trigger notification (0 = always)'
+    )
+
+    # Metadata
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    # Audit trail
+    history = HistoricalRecords()
+
+    class Meta:
+        verbose_name = 'Email Configuration'
+        verbose_name_plural = 'Email Configurations'
+
+    def __str__(self):
+        return self.name
+
+    def get_recipients(self):
+        """Return list of recipient emails."""
+        return [
+            email.strip()
+            for email in self.recipient_emails.split(',')
+            if email.strip()
+        ]
+
+
+class EmailLog(models.Model):
+    """
+    Log of sent email notifications.
+    """
+    STATUS_CHOICES = [
+        ('sent', 'Sent'),
+        ('failed', 'Failed'),
+    ]
+
+    configuration = models.ForeignKey(
+        EmailConfiguration,
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name='logs'
+    )
+    subject = models.CharField(max_length=255)
+    recipients = models.TextField(
+        help_text='Comma-separated list of recipients'
+    )
+    body_preview = models.TextField(
+        blank=True,
+        help_text='First 500 chars of email body'
+    )
+    status = models.CharField(
+        max_length=10,
+        choices=STATUS_CHOICES
+    )
+    error_message = models.TextField(blank=True)
+
+    # Related objects
+    scrape_job = models.ForeignKey(
+        'scraper.ScrapeJob',
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name='email_logs'
+    )
+    sync_job = models.ForeignKey(
+        'cloudkit.CloudKitSyncJob',
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name='email_logs'
+    )
+
+    # Metadata
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ['-created_at']
+        verbose_name = 'Email Log'
+        verbose_name_plural = 'Email Logs'
+
+    def __str__(self):
+        return f"{self.subject} ({self.status})"