Add full SkinsPins application

- FastAPI + SQLite + Alpine.js + HTMX PWA for Bingo Bango Bongo golf scoring
- Passwordless magic link auth with email (aiosmtplib) and admin invite system
- Real-time score entry via WebSocket with drag-and-drop player ordering
- Course management with per-hole par and stroke index
- Scorecard with golf score markers (birdie, eagle, bogey, etc.)
- Two-step new game form with tee selection per player
- Dashboard with stats, live games social stream, and recent game history
- Game summary view (read-only scorecard with leaderboard)
- User profile pages with win stats
- PWA install support with generated PNG icons
- Admin panel for users, courses, games, and invitations

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

.env.example

@@ -0,0 +1,25 @@
+# Secret key for signing session cookies — use a long random string in production
+SECRET_KEY=change-me-to-a-long-random-string
+
+# Email address of the admin user
+ADMIN_EMAIL=admin@example.com
+
+# Base URL used to build magic links (no trailing slash)
+SITE_URL=http://localhost:8000
+
+# development | production
+ENV=development
+
+# Path to the SQLite database file (inside the container)
+DATABASE_PATH=/data/skinspins.db
+
+# SMTP email settings (leave SMTP_HOST empty to disable email and log links instead)
+SMTP_HOST=smtp.example.com
+SMTP_PORT=587
+SMTP_USER=your@email.com
+SMTP_PASSWORD=your-smtp-password
+SMTP_FROM=noreply@example.com
+# Use implicit SSL/TLS (port 465). Set SMTP_TLS=false when using SSL.
+SMTP_SSL=false
+# Use STARTTLS (port 587). Set to "false" when using SSL.
+SMTP_TLS=true