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>

app/routers/onboarding.py

@@ -0,0 +1,63 @@
+from fastapi import APIRouter, Depends, Form, Request, UploadFile, File
+from fastapi.responses import HTMLResponse, RedirectResponse
+import aiosqlite
+
+from app.database import get_db
+from app.dependencies import get_current_user
+from app.templates_config import templates
+from app.avatar import save_avatar
+
+router = APIRouter()
+
+AVATARS = ["🏌️", "⛳", "🦅", "🐦", "🏆", "🎯", "🌟", "🔥", "💪", "🦁", "🐯", "🦊"]
+
+
+@router.get("/onboarding", response_class=HTMLResponse)
+async def onboarding_page(request: Request, user: dict = Depends(get_current_user)):
+    if user["is_onboarded"]:
+        return RedirectResponse("/", status_code=302)
+    return templates.TemplateResponse(
+        "onboarding/setup.html", {"request": request, "user": user, "avatars": AVATARS}
+    )
+
+
+@router.post("/onboarding", response_class=HTMLResponse)
+async def onboarding_submit(
+    request: Request,
+    name: str = Form(...),
+    handicap: float = Form(...),
+    avatar_emoji: str = Form(""),
+    avatar_file: UploadFile = File(None),
+    user: dict = Depends(get_current_user),
+    db: aiosqlite.Connection = Depends(get_db),
+):
+    errors = {}
+    name = name.strip()
+    if not name:
+        errors["name"] = "Name is required."
+    if not (0.0 <= handicap <= 54.0):
+        errors["handicap"] = "Handicap must be between 0 and 54."
+
+    avatar = None
+    if avatar_file and avatar_file.filename:
+        avatar, err = await save_avatar(avatar_file, user["id"])
+        if err:
+            errors["avatar"] = err
+    elif avatar_emoji in AVATARS:
+        avatar = avatar_emoji
+    else:
+        errors["avatar"] = "Please upload a photo or select an emoji."
+
+    if errors:
+        return templates.TemplateResponse(
+            "onboarding/setup.html",
+            {"request": request, "user": user, "avatars": AVATARS, "errors": errors,
+             "values": {"name": name, "handicap": handicap, "avatar_emoji": avatar_emoji}},
+        )
+
+    await db.execute(
+        "UPDATE users SET name = ?, handicap = ?, avatar = ?, is_onboarded = 1 WHERE id = ?",
+        (name, handicap, avatar, user["id"]),
+    )
+    await db.commit()
+    return RedirectResponse("/", status_code=302)