Add challenges preview + makefile

backend/app/schemas/challenge.py

@@ -51,3 +51,40 @@ class ChallengeGenerated(BaseModel):
     estimated_time: int | None = None
     proof_type: str
     proof_hint: str | None = None
+
+
+class ChallengePreview(BaseModel):
+    """Schema for challenge preview (with game info)"""
+    game_id: int
+    game_title: str
+    title: str
+    description: str
+    type: str
+    difficulty: str
+    points: int
+    estimated_time: int | None = None
+    proof_type: str
+    proof_hint: str | None = None
+
+
+class ChallengesPreviewResponse(BaseModel):
+    """Response with generated challenges for preview"""
+    challenges: list[ChallengePreview]
+
+
+class ChallengeSaveItem(BaseModel):
+    """Single challenge to save"""
+    game_id: int
+    title: str
+    description: str
+    type: str
+    difficulty: str
+    points: int
+    estimated_time: int | None = None
+    proof_type: str
+    proof_hint: str | None = None
+
+
+class ChallengesSaveRequest(BaseModel):
+    """Request to save previewed challenges"""
+    challenges: list[ChallengeSaveItem]