🎉 Initial commit: AudiOhm - Alternative à Spotify avec streaming YouTube

Features:
- Frontend Flutter avec thème néon cyberpunk
- Backend FastAPI avec streaming YouTube
- Base de données PostgreSQL + Redis
- Authentification JWT complète
- Recherche multi-source (DB + YouTube)
- Playlists CRUD avec drag & drop
- Queue management
- Settings avec audio quality
- Interface adaptative (Desktop + Mobile)

Tech Stack:
- Frontend: Flutter 3.2+, Riverpod
- Backend: Python 3.11+, FastAPI
- Database: PostgreSQL 15+
- Cache: Redis 7+
- Streaming: yt-dlp + FFmpeg

🚀 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>

backend/app/schemas/auth.py

@@ -0,0 +1,71 @@
+"""Authentication schemas."""
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, EmailStr, Field, ConfigDict
+
+
+class UserBase(BaseModel):
+    """Base user schema."""
+
+    email: EmailStr
+    username: str = Field(..., min_length=3, max_length=50)
+    display_name: Optional[str] = Field(None, max_length=100)
+
+
+class UserCreate(UserBase):
+    """Schema for creating a new user."""
+
+    password: str = Field(..., min_length=8, max_length=100)
+
+
+class UserUpdate(BaseModel):
+    """Schema for updating user profile."""
+
+    display_name: Optional[str] = Field(None, max_length=100)
+    avatar_url: Optional[str] = None
+    date_of_birth: Optional[datetime] = None
+    country: Optional[str] = Field(None, max_length=2)
+
+
+class UserResponse(UserBase):
+    """Schema for user response."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: str
+    display_name: Optional[str] = None
+    avatar_url: Optional[str] = None
+    is_premium: bool = False
+    created_at: datetime
+    updated_at: datetime
+
+
+class Token(BaseModel):
+    """Schema for JWT token response."""
+
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+    expires_in: int  # seconds
+
+
+class TokenPayload(BaseModel):
+    """Schema for JWT token payload."""
+
+    sub: str  # user id
+    exp: int  # expiration timestamp
+    type: str  # "access" or "refresh"
+
+
+class LoginRequest(BaseModel):
+    """Schema for login request."""
+
+    email: EmailStr
+    password: str
+
+
+class RefreshTokenRequest(BaseModel):
+    """Schema for token refresh request."""
+
+    refresh_token: str