prod: UI Optimisée mise en production

- Documentation archivée et réorganisée
- Backend: Ajout tests, migrations, library service, rate limiting
- Frontend: Suppression Flutter, focus sur interface web HTML/JS
- Tailwind CSS ajouté pour le style
- Améliorations UX et corrections bugs

Generated with [Claude Code](https://claude.com/claude-code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

backend/app/schemas/auth.py

@@ -76,3 +76,10 @@ class RefreshTokenRequest(BaseModel):
     """Schema for token refresh request."""
 
     refresh_token: str
+
+
+class ChangePasswordRequest(BaseModel):
+    """Schema for password change request."""
+
+    old_password: str = Field(..., min_length=8, max_length=100)
+    new_password: str = Field(..., min_length=8, max_length=100)

backend/app/schemas/library.py

@@ -0,0 +1,123 @@
+"""Library schemas."""
+from datetime import datetime
+from typing import Optional, List
+from uuid import UUID
+
+from pydantic import BaseModel, Field, ConfigDict
+
+
+# ============ LISTENING HISTORY SCHEMAS ============
+
+class ListeningHistoryBase(BaseModel):
+    """Base listening history schema."""
+
+    played_for: int = Field(..., ge=0, description="Duration played in seconds")
+    completed: bool = False
+    source: Optional[str] = Field(None, max_length=50, description="Playback source")
+
+
+class ListeningHistoryCreate(ListeningHistoryBase):
+    """Schema for creating a listening history entry."""
+
+    track_id: UUID
+
+
+class ListeningHistoryResponse(BaseModel):
+    """Schema for listening history response."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: UUID
+    user_id: UUID
+    track_id: UUID
+    played_for: int
+    completed: bool
+    source: Optional[str]
+    played_at: datetime
+    created_at: datetime
+
+    # Embedded track information
+    track: Optional[dict] = None
+
+
+class ListeningHistoryStats(BaseModel):
+    """Schema for listening history statistics."""
+
+    total_plays: int
+    plays_last_30_days: int
+    unique_tracks_played: int
+
+
+# ============ LIKED TRACKS SCHEMAS ============
+
+class LikedTrackBase(BaseModel):
+    """Base liked track schema."""
+
+    notes: Optional[str] = Field(None, max_length=1000, description="User notes about the track")
+
+
+class LikedTrackCreate(BaseModel):
+    """Schema for liking a track."""
+
+    track_id: UUID
+    notes: Optional[str] = Field(None, max_length=1000)
+
+
+class LikedTrackUpdate(BaseModel):
+    """Schema for updating liked track notes."""
+
+    notes: str = Field(..., max_length=1000)
+
+
+class LikedTrackResponse(BaseModel):
+    """Schema for liked track response."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: UUID
+    user_id: UUID
+    track_id: UUID
+    notes: Optional[str]
+    created_at: datetime
+    updated_at: datetime
+
+    # Embedded track information
+    track: Optional[dict] = None
+
+
+class LikedTrackCheckResponse(BaseModel):
+    """Schema for checking if track is liked."""
+
+    is_liked: bool
+
+
+# ============ LIBRARY STATS SCHEMAS ============
+
+class LibraryStatsResponse(BaseModel):
+    """Schema for library statistics response."""
+
+    liked_tracks_count: int
+    total_plays: int
+    plays_last_30_days: int
+    unique_tracks_played: int
+
+
+class RecentlyPlayedResponse(BaseModel):
+    """Schema for recently played tracks."""
+
+    tracks: List[dict]
+    total: int
+
+
+class MostPlayedTrackResponse(BaseModel):
+    """Schema for most played track response."""
+
+    track: dict
+    play_count: int
+
+
+class MostPlayedTracksResponse(BaseModel):
+    """Schema for most played tracks response."""
+
+    tracks: List[MostPlayedTrackResponse]
+    total: int