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>

core/models/team.py

@@ -0,0 +1,88 @@
+from django.db import models
+from simple_history.models import HistoricalRecords
+
+
+class Team(models.Model):
+    """
+    Team model with canonical identifiers.
+    """
+    id = models.CharField(
+        max_length=50,
+        primary_key=True,
+        help_text='Canonical ID (e.g., team_nba_lal)'
+    )
+    sport = models.ForeignKey(
+        'core.Sport',
+        on_delete=models.CASCADE,
+        related_name='teams'
+    )
+    division = models.ForeignKey(
+        'core.Division',
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name='teams'
+    )
+    city = models.CharField(
+        max_length=100,
+        help_text='Team city (e.g., Los Angeles)'
+    )
+    name = models.CharField(
+        max_length=100,
+        help_text='Team name (e.g., Lakers)'
+    )
+    full_name = models.CharField(
+        max_length=200,
+        help_text='Full team name (e.g., Los Angeles Lakers)'
+    )
+    abbreviation = models.CharField(
+        max_length=10,
+        help_text='Team abbreviation (e.g., LAL)'
+    )
+    home_stadium = models.ForeignKey(
+        'core.Stadium',
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name='home_teams'
+    )
+    primary_color = models.CharField(
+        max_length=7,
+        blank=True,
+        help_text='Primary color hex (e.g., #552583)'
+    )
+    secondary_color = models.CharField(
+        max_length=7,
+        blank=True,
+        help_text='Secondary color hex (e.g., #FDB927)'
+    )
+    logo_url = models.URLField(
+        blank=True,
+        help_text='URL to team logo'
+    )
+    is_active = models.BooleanField(
+        default=True,
+        help_text='Whether team is currently active'
+    )
+
+    # Metadata
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    # Audit trail
+    history = HistoricalRecords()
+
+    class Meta:
+        ordering = ['sport', 'city', 'name']
+        verbose_name = 'Team'
+        verbose_name_plural = 'Teams'
+
+    def __str__(self):
+        return self.full_name
+
+    @property
+    def conference(self):
+        """Return team's conference via division."""
+        if self.division:
+            return self.division.conference
+        return None