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>

static/manifest.json

@@ -0,0 +1,24 @@
+{
+  "name": "Skins & Pins",
+  "short_name": "Skins&Pins",
+  "start_url": "/",
+  "scope": "/",
+  "display": "standalone",
+  "orientation": "portrait",
+  "background_color": "#1a1a2e",
+  "theme_color": "#2d6a4f",
+  "icons": [
+    {
+      "src": "/static/icons/icon-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/static/icons/icon-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any maskable"
+    }
+  ]
+}