Улучшение системы оспариваний и исправления

- Оспаривания теперь требуют решения админа после 24ч голосования
  - Можно повторно оспаривать после разрешённых споров
  - Исправлены бонусные очки при перепрохождении после оспаривания
  - Сброс серии при невалидном пруфе
  - Колесо показывает только доступные игры
  - Rate limiting только через backend (RATE_LIMIT_ENABLED)

backend/app/schemas/dispute.py

@@ -1,8 +1,13 @@
 from datetime import datetime
+from typing import TYPE_CHECKING
 from pydantic import BaseModel, Field
 
 from app.schemas.user import UserPublic
-from app.schemas.challenge import ChallengeResponse
+from app.schemas.challenge import ChallengeResponse, GameShort
+
+if TYPE_CHECKING:
+    from app.schemas.game import PlaythroughInfo
+    from app.schemas.assignment import BonusAssignmentResponse
 
 
 class DisputeCreate(BaseModel):
@@ -63,7 +68,10 @@ class DisputeResponse(BaseModel):
 class AssignmentDetailResponse(BaseModel):
     """Detailed assignment information with proofs and dispute"""
     id: int
-    challenge: ChallengeResponse
+    challenge: ChallengeResponse | None  # None for playthrough
+    game: GameShort | None = None  # For playthrough
+    is_playthrough: bool = False
+    playthrough_info: dict | None = None  # For playthrough (description, points, proof_type, proof_hint)
     participant: UserPublic
     status: str
     proof_url: str | None  # External URL (YouTube, etc.)
@@ -75,6 +83,7 @@ class AssignmentDetailResponse(BaseModel):
     completed_at: datetime | None
     can_dispute: bool  # True if <24h since completion and not own assignment
     dispute: DisputeResponse | None
+    bonus_challenges: list[dict] | None = None  # For playthrough
 
     class Config:
         from_attributes = True
@@ -83,7 +92,11 @@ class AssignmentDetailResponse(BaseModel):
 class ReturnedAssignmentResponse(BaseModel):
     """Returned assignment that needs to be redone"""
     id: int
-    challenge: ChallengeResponse
+    challenge: ChallengeResponse | None = None  # For challenge assignments
+    is_playthrough: bool = False
+    game_id: int | None = None  # For playthrough assignments
+    game_title: str | None = None
+    game_cover_url: str | None = None
     original_completed_at: datetime
     dispute_reason: str